diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index f49beb47ca..f8d1dcccce 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -103,6 +103,7 @@ repos:
           - "--skip-license-insertion-comment=no-auto-license-header"
         types_or:
           - python
+        exclude: ^examples/
       - id: insert-license
         name: "License MPL-2.0 rust"
         args:
@@ -113,6 +114,7 @@ repos:
           - "--skip-license-insertion-comment=@generated"
         types_or:
           - rust
+        exclude: ^examples/
       - id: insert-license
         name: "License MPL-2.0 typescript"
         args:
@@ -123,6 +125,7 @@ repos:
         types_or:
           - ts
           - tsx
+        exclude: ^examples/
   - repo: https://github.com/python-jsonschema/check-jsonschema
     rev: 0.28.6
     hooks:
diff --git a/docs/metatype.dev/docs/guides/securing-requests/cors.py b/docs/metatype.dev/docs/guides/securing-requests/cors.py
index 58cf3b9372..50387d5dae 100644
--- a/docs/metatype.dev/docs/guides/securing-requests/cors.py
+++ b/docs/metatype.dev/docs/guides/securing-requests/cors.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 # skip:start
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.graph.params import Cors
diff --git a/ghjk.ts b/ghjk.ts
index 324ada15b9..dccf5150a7 100644
--- a/ghjk.ts
+++ b/ghjk.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 // @ts-nocheck: Deno file
 
 import { METATYPE_VERSION, PUBLISHED_VERSION } from "./tools/consts.ts";
diff --git a/src/common/src/typegraph/validator/injection.rs b/src/common/src/typegraph/validator/injection.rs
index cfdee4c4c2..09bd9cf381 100644
--- a/src/common/src/typegraph/validator/injection.rs
+++ b/src/common/src/typegraph/validator/injection.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 use indexmap::IndexMap;
 use serde_json::Value;
 
diff --git a/src/meta-cli/src/cli/fdk_template.rs b/src/meta-cli/src/cli/fdk_template.rs
index 7d363f114d..b7c8529111 100644
--- a/src/meta-cli/src/cli/fdk_template.rs
+++ b/src/meta-cli/src/cli/fdk_template.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 use async_trait::async_trait;
 use clap::{Parser, ValueEnum};
 
diff --git a/src/meta-cli/src/utils/shell_words.rs b/src/meta-cli/src/utils/shell_words.rs
index 5c00018f2e..4e2df60909 100644
--- a/src/meta-cli/src/utils/shell_words.rs
+++ b/src/meta-cli/src/utils/shell_words.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 // no-auto-license-header
 
 /*
diff --git a/src/meta-cli/tests/graphs/nested/graph0.py b/src/meta-cli/tests/graphs/nested/graph0.py
index e69de29bb2..8e55187b7a 100644
--- a/src/meta-cli/tests/graphs/nested/graph0.py
+++ b/src/meta-cli/tests/graphs/nested/graph0.py
@@ -0,0 +1,2 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
diff --git a/src/meta-lsp/ts-language-server/src/analysis/diagnostics/context.ts b/src/meta-lsp/ts-language-server/src/analysis/diagnostics/context.ts
index 71322451ee..ad90f9619e 100644
--- a/src/meta-lsp/ts-language-server/src/analysis/diagnostics/context.ts
+++ b/src/meta-lsp/ts-language-server/src/analysis/diagnostics/context.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import { Diagnostic, DiagnosticSeverity } from "vscode-languageserver-types";
 import { ScopeManager } from "../typescript-semantic/scope.ts";
 import {
diff --git a/src/meta-lsp/ts-language-server/src/analysis/exposed_function.ts b/src/meta-lsp/ts-language-server/src/analysis/exposed_function.ts
index dc82d9e0c2..712996a101 100644
--- a/src/meta-lsp/ts-language-server/src/analysis/exposed_function.ts
+++ b/src/meta-lsp/ts-language-server/src/analysis/exposed_function.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import { Parser } from "../parser.ts";
 import { ModuleDiagnosticsContext } from "./diagnostics/context.ts";
 import { InputType, Runtime } from "./runtimes/mod.ts";
diff --git a/src/meta-lsp/ts-language-server/src/analysis/runtimes/mod.ts b/src/meta-lsp/ts-language-server/src/analysis/runtimes/mod.ts
index bbaead4b52..f382675346 100644
--- a/src/meta-lsp/ts-language-server/src/analysis/runtimes/mod.ts
+++ b/src/meta-lsp/ts-language-server/src/analysis/runtimes/mod.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import { Parser } from "../../parser.ts";
 import { ModuleDiagnosticsContext } from "../diagnostics/context.ts";
 import { TgType } from "../typescript-semantic/semantic-node.ts";
diff --git a/src/meta-lsp/ts-language-server/src/analysis/typescript-semantic/scope.ts b/src/meta-lsp/ts-language-server/src/analysis/typescript-semantic/scope.ts
index 6f0d87bf4c..490e403769 100644
--- a/src/meta-lsp/ts-language-server/src/analysis/typescript-semantic/scope.ts
+++ b/src/meta-lsp/ts-language-server/src/analysis/typescript-semantic/scope.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import { Parser, queryMatches } from "../../parser.ts";
 import { ModuleDiagnosticsContext } from "../diagnostics/context.ts";
 
diff --git a/src/meta-lsp/ts-language-server/src/analysis/typescript-semantic/semantic-node.ts b/src/meta-lsp/ts-language-server/src/analysis/typescript-semantic/semantic-node.ts
index 7c04a12718..e563519dea 100644
--- a/src/meta-lsp/ts-language-server/src/analysis/typescript-semantic/semantic-node.ts
+++ b/src/meta-lsp/ts-language-server/src/analysis/typescript-semantic/semantic-node.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import { Parser } from "../../parser.ts";
 import { ModuleDiagnosticsContext } from "../diagnostics/context.ts";
 import { asMethodCall } from "./utils/mod.ts";
diff --git a/src/meta-lsp/ts-language-server/src/analysis/typescript-semantic/symbols.ts b/src/meta-lsp/ts-language-server/src/analysis/typescript-semantic/symbols.ts
index df8685d4a1..f810e8065a 100644
--- a/src/meta-lsp/ts-language-server/src/analysis/typescript-semantic/symbols.ts
+++ b/src/meta-lsp/ts-language-server/src/analysis/typescript-semantic/symbols.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import { ScopeManager } from "./scope.ts";
 import { SemanticNode } from "./semantic-node.ts";
 
diff --git a/src/meta-lsp/ts-language-server/src/analysis/typescript-semantic/utils/mod.ts b/src/meta-lsp/ts-language-server/src/analysis/typescript-semantic/utils/mod.ts
index 387d64c9f0..c6f23ba7cd 100644
--- a/src/meta-lsp/ts-language-server/src/analysis/typescript-semantic/utils/mod.ts
+++ b/src/meta-lsp/ts-language-server/src/analysis/typescript-semantic/utils/mod.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import { Parser } from "../../../parser.ts";
 
 export type MethodCall = {
diff --git a/src/meta-lsp/ts-language-server/src/lsp_client.ts b/src/meta-lsp/ts-language-server/src/lsp_client.ts
index c9e7848ef6..c7518160e6 100644
--- a/src/meta-lsp/ts-language-server/src/lsp_client.ts
+++ b/src/meta-lsp/ts-language-server/src/lsp_client.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import child_process from "node:child_process";
 import { JSONRPCEndpoint, LspClient } from "ts-lsp-client";
 
diff --git a/src/meta-lsp/ts-language-server/src/parser.ts b/src/meta-lsp/ts-language-server/src/parser.ts
index 8fdc918c46..7de6247d5f 100644
--- a/src/meta-lsp/ts-language-server/src/parser.ts
+++ b/src/meta-lsp/ts-language-server/src/parser.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import Parser = require("tree-sitter");
 import { typescript as TypeScript } from "tree-sitter-typescript";
 import {
diff --git a/src/meta-lsp/ts-language-server/src/server.ts b/src/meta-lsp/ts-language-server/src/server.ts
index d05c00b2ae..7a379f1bd6 100644
--- a/src/meta-lsp/ts-language-server/src/server.ts
+++ b/src/meta-lsp/ts-language-server/src/server.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import { LspServer } from "./server/index.ts";
 
 const server = new LspServer(["deno", "lsp"]);
diff --git a/src/meta-lsp/ts-language-server/src/server/documents.ts b/src/meta-lsp/ts-language-server/src/server/documents.ts
index 40b2582844..11a0534c84 100644
--- a/src/meta-lsp/ts-language-server/src/server/documents.ts
+++ b/src/meta-lsp/ts-language-server/src/server/documents.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import { Connection, TextDocuments } from "vscode-languageserver";
 import { TextDocument } from "vscode-languageserver-textdocument";
 import { ClientCapabilities } from "./mod.ts";
diff --git a/src/meta-lsp/ts-language-server/src/server/index.ts b/src/meta-lsp/ts-language-server/src/server/index.ts
index 93166a06ca..e71540edd6 100644
--- a/src/meta-lsp/ts-language-server/src/server/index.ts
+++ b/src/meta-lsp/ts-language-server/src/server/index.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import { LspClient } from "ts-lsp-client";
 import { createLspClient } from "../lsp_client.ts";
 import {
diff --git a/src/meta-lsp/ts-language-server/src/types.ts b/src/meta-lsp/ts-language-server/src/types.ts
index 4dfd84a17e..bbfd219d3d 100644
--- a/src/meta-lsp/ts-language-server/src/types.ts
+++ b/src/meta-lsp/ts-language-server/src/types.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import { Parser } from "../parser.ts";
 
 export type TypegraphDefinition = {
diff --git a/src/meta-lsp/ts-language-server/tests/expose_analysis.test.ts b/src/meta-lsp/ts-language-server/tests/expose_analysis.test.ts
index d9660c561e..0e312c33e4 100644
--- a/src/meta-lsp/ts-language-server/tests/expose_analysis.test.ts
+++ b/src/meta-lsp/ts-language-server/tests/expose_analysis.test.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import { typescript } from "tree-sitter-typescript";
 import {
   findTypegraphDefinitions,
diff --git a/src/meta-lsp/ts-language-server/tests/typegraphs/deno_types.ts b/src/meta-lsp/ts-language-server/tests/typegraphs/deno_types.ts
index b2ae684dc0..1e36f95d1a 100644
--- a/src/meta-lsp/ts-language-server/tests/typegraphs/deno_types.ts
+++ b/src/meta-lsp/ts-language-server/tests/typegraphs/deno_types.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 // TODO use deployed version of metatype in the import map
 import { Policy, t, typegraph } from "npm:@typegraph/sdk@0.2.4";
 import { PythonRuntime } from "npm:@typegraph/sdk@0.2.4/runtimes/python";
diff --git a/src/meta-lsp/ts-language-server/tests/utils.ts b/src/meta-lsp/ts-language-server/tests/utils.ts
index e69de29bb2..23d9e15ccf 100644
--- a/src/meta-lsp/ts-language-server/tests/utils.ts
+++ b/src/meta-lsp/ts-language-server/tests/utils.ts
@@ -0,0 +1,2 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
diff --git a/src/meta-lsp/vscode-metatype-support/src/extension.ts b/src/meta-lsp/vscode-metatype-support/src/extension.ts
index 2cf821b9ed..c0a373c0af 100644
--- a/src/meta-lsp/vscode-metatype-support/src/extension.ts
+++ b/src/meta-lsp/vscode-metatype-support/src/extension.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import { join } from "node:path";
 import { ExtensionContext } from "vscode";
 
diff --git a/src/metagen/fixtures/tg.ts b/src/metagen/fixtures/tg.ts
index 12fbe189ba..e0e4dae44e 100644
--- a/src/metagen/fixtures/tg.ts
+++ b/src/metagen/fixtures/tg.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import { Policy, t, typegraph } from "@typegraph/sdk/index.ts";
 import { WasmRuntime } from "@typegraph/sdk/runtimes/wasm.ts";
 
diff --git a/src/metagen/src/client_py/static/client.py b/src/metagen/src/client_py/static/client.py
index d943e26f9f..204bfc41a1 100644
--- a/src/metagen/src/client_py/static/client.py
+++ b/src/metagen/src/client_py/static/client.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 import typing
 import dataclasses as dc
 import json
diff --git a/src/metagen/src/client_ts/static/mod.ts b/src/metagen/src/client_ts/static/mod.ts
index 3c7ba074fa..3a075fb461 100644
--- a/src/metagen/src/client_ts/static/mod.ts
+++ b/src/metagen/src/client_ts/static/mod.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 function _selectionToNodeSet(
   selection: Selection,
   metas: [string, () => NodeMeta][],
diff --git a/src/metagen/src/fdk_substantial/mod.rs b/src/metagen/src/fdk_substantial/mod.rs
index 494d76ee87..26f80816ea 100644
--- a/src/metagen/src/fdk_substantial/mod.rs
+++ b/src/metagen/src/fdk_substantial/mod.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 // TODO: keyword filtering
 
 use crate::interlude::*;
diff --git a/src/metagen/src/fdk_substantial/static/substantial.py b/src/metagen/src/fdk_substantial/static/substantial.py
index 621b0bdb4d..a8c98cf860 100644
--- a/src/metagen/src/fdk_substantial/static/substantial.py
+++ b/src/metagen/src/fdk_substantial/static/substantial.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from datetime import timedelta
 from typing import Any, Callable, Optional
 from types import RetryStrategy
diff --git a/src/metagen/src/fdk_substantial/static/types.py b/src/metagen/src/fdk_substantial/static/types.py
index e10d852ca0..af87fe6058 100644
--- a/src/metagen/src/fdk_substantial/static/types.py
+++ b/src/metagen/src/fdk_substantial/static/types.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from dataclasses import dataclass
 from typing import Union
 
diff --git a/src/metagen/src/fdk_substantial/static/workflow.py b/src/metagen/src/fdk_substantial/static/workflow.py
index 285844fa3c..377591f45a 100644
--- a/src/metagen/src/fdk_substantial/static/workflow.py
+++ b/src/metagen/src/fdk_substantial/static/workflow.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from substantial import workflow, Context  # noqa
 from substantial.types import RetryStrategy  # noqa
 
diff --git a/src/metagen/src/fdk_typescript/static/fdk.ts b/src/metagen/src/fdk_typescript/static/fdk.ts
index ef276b7d43..28361dcebc 100644
--- a/src/metagen/src/fdk_typescript/static/fdk.ts
+++ b/src/metagen/src/fdk_typescript/static/fdk.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 export type Ctx = {
   parent?: Record<string, unknown>;
   /**
diff --git a/src/pyrt_wit_wire/main.py b/src/pyrt_wit_wire/main.py
index 28689e3fc9..91c941e7a4 100644
--- a/src/pyrt_wit_wire/main.py
+++ b/src/pyrt_wit_wire/main.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 import importlib
 import importlib.abc
 import importlib.machinery
diff --git a/src/substantial/src/backends/fs.rs b/src/substantial/src/backends/fs.rs
index f154dd7fa5..373c9e76c7 100644
--- a/src/substantial/src/backends/fs.rs
+++ b/src/substantial/src/backends/fs.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 use super::key_value::{Item, KeyValueBackend, KeyValueLike};
 use anyhow::{Context, Result};
 use chrono::{DateTime, Utc};
diff --git a/src/substantial/src/backends/key_value.rs b/src/substantial/src/backends/key_value.rs
index be0d9a65c4..cd6cfce7ad 100644
--- a/src/substantial/src/backends/key_value.rs
+++ b/src/substantial/src/backends/key_value.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 use super::{Backend, BackendMetadataWriter, NextRun};
 use crate::{
     converters::{MetadataEvent, MetadataPayload},
diff --git a/src/substantial/src/backends/memory.rs b/src/substantial/src/backends/memory.rs
index 40c2fa0912..0c23871968 100644
--- a/src/substantial/src/backends/memory.rs
+++ b/src/substantial/src/backends/memory.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 use super::key_value::{Item, KeyValueBackend, KeyValueLike};
 use anyhow::Result;
 use chrono::{DateTime, Utc};
diff --git a/src/substantial/src/backends/mod.rs b/src/substantial/src/backends/mod.rs
index f6541f64ff..6a4a8841f6 100644
--- a/src/substantial/src/backends/mod.rs
+++ b/src/substantial/src/backends/mod.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 use chrono::{DateTime, Utc};
 use serde::{Deserialize, Serialize};
 
diff --git a/src/substantial/src/backends/redis.rs b/src/substantial/src/backends/redis.rs
index 72a4b5139e..cee8ff228e 100644
--- a/src/substantial/src/backends/redis.rs
+++ b/src/substantial/src/backends/redis.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 use std::sync::Mutex;
 
 use super::{Backend, BackendMetadataWriter, NextRun};
diff --git a/src/substantial/src/converters.rs b/src/substantial/src/converters.rs
index 3c146ca090..ea346d1288 100644
--- a/src/substantial/src/converters.rs
+++ b/src/substantial/src/converters.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 use std::collections::HashMap;
 
 use anyhow::{bail, Context, Ok, Result};
diff --git a/src/substantial/src/lib.rs b/src/substantial/src/lib.rs
index 89fe1cf78e..81b09d8a52 100644
--- a/src/substantial/src/lib.rs
+++ b/src/substantial/src/lib.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 pub mod backends;
 pub mod converters;
 pub mod protocol;
diff --git a/src/substantial/tests/mod.rs b/src/substantial/tests/mod.rs
index 26e5469297..e218f9a887 100644
--- a/src/substantial/tests/mod.rs
+++ b/src/substantial/tests/mod.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 #[cfg(test)]
 mod tests {
     use std::{collections::HashMap, fmt::Debug, path::PathBuf, thread::sleep, time::Duration};
diff --git a/src/typegate/src/runtimes/substantial/agent.ts b/src/typegate/src/runtimes/substantial/agent.ts
index 185a33eb9b..4fe0b4b7eb 100644
--- a/src/typegate/src/runtimes/substantial/agent.ts
+++ b/src/typegate/src/runtimes/substantial/agent.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import {
   AddScheduleInput,
   Backend,
diff --git a/src/typegraph/core/src/runtimes/prisma/type_generation/mod.rs b/src/typegraph/core/src/runtimes/prisma/type_generation/mod.rs
index d273666cdc..5a2f26e9dc 100644
--- a/src/typegraph/core/src/runtimes/prisma/type_generation/mod.rs
+++ b/src/typegraph/core/src/runtimes/prisma/type_generation/mod.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 // Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
 //
 // SPDX-License-Identifier: MPL-2.0
diff --git a/src/typegraph/core/src/types/type_ref.rs b/src/typegraph/core/src/types/type_ref.rs
index aa4a0b09ac..57cd33b591 100644
--- a/src/typegraph/core/src/types/type_ref.rs
+++ b/src/typegraph/core/src/types/type_ref.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 use std::hash::Hash;
 use std::rc::Rc;
 
diff --git a/src/typegraph/core/src/types/type_ref/as_id.rs b/src/typegraph/core/src/types/type_ref/as_id.rs
index c5d2160eae..8b2c578b37 100644
--- a/src/typegraph/core/src/types/type_ref/as_id.rs
+++ b/src/typegraph/core/src/types/type_ref/as_id.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 use serde::{Deserialize, Serialize};
 
 use super::{ExtendedTypeDef, FindAttribute as _, RefAttr, TypeRef};
diff --git a/src/typegraph/core/src/types/type_ref/injection.rs b/src/typegraph/core/src/types/type_ref/injection.rs
index 9ae2846057..7296cc758b 100644
--- a/src/typegraph/core/src/types/type_ref/injection.rs
+++ b/src/typegraph/core/src/types/type_ref/injection.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 use super::{RefAttr, TypeRef};
 use crate::types::Type;
 use crate::wit::utils::ReduceEntry;
diff --git a/src/typegraph/core/src/types/type_ref/policy.rs b/src/typegraph/core/src/types/type_ref/policy.rs
index 18e965fc23..6995a8b331 100644
--- a/src/typegraph/core/src/types/type_ref/policy.rs
+++ b/src/typegraph/core/src/types/type_ref/policy.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 use crate::errors::{Result, TgError};
 use crate::types::Type;
 use serde::{Deserialize, Serialize};
diff --git a/src/typegraph/core/src/types/type_ref/runtime_config.rs b/src/typegraph/core/src/types/type_ref/runtime_config.rs
index fc26313706..bcd2438f13 100644
--- a/src/typegraph/core/src/types/type_ref/runtime_config.rs
+++ b/src/typegraph/core/src/types/type_ref/runtime_config.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 use super::{RefAttr, TypeRef};
 use crate::errors::{Result, TgError};
 use crate::types::Type;
diff --git a/src/typegraph/core/src/types/type_ref/xdef.rs b/src/typegraph/core/src/types/type_ref/xdef.rs
index 0cf7ce5960..613c5c9635 100644
--- a/src/typegraph/core/src/types/type_ref/xdef.rs
+++ b/src/typegraph/core/src/types/type_ref/xdef.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 use super::{FlatTypeRef, FlatTypeRefTarget, RefAttr, RefAttrs, TypeRef};
 use crate::errors::Result;
 use crate::global_store::Store;
diff --git a/src/typegraph/core/src/utils/postprocess/naming.rs b/src/typegraph/core/src/utils/postprocess/naming.rs
index 708a38581a..ab636ae38a 100644
--- a/src/typegraph/core/src/utils/postprocess/naming.rs
+++ b/src/typegraph/core/src/utils/postprocess/naming.rs
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 use std::{
     collections::{HashMap, HashSet},
     rc::Rc,
diff --git a/tests/auth/auth.py b/tests/auth/auth.py
index cf1c9c7f63..78ea96dd53 100644
--- a/tests/auth/auth.py
+++ b/tests/auth/auth.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.graph.params import Auth
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/dedup/dedup_test.ts b/tests/dedup/dedup_test.ts
index c6985433f9..651d97b714 100644
--- a/tests/dedup/dedup_test.ts
+++ b/tests/dedup/dedup_test.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import { Meta } from "test-utils/mod.ts";
 import { Typegraph } from "@metatype/typegate/typegraph/types.ts";
 import { assert, assertEquals } from "@std/assert";
diff --git a/tests/docs/how-tos/prog_deploy/prog_deploy.py b/tests/docs/how-tos/prog_deploy/prog_deploy.py
index 0e53ac081a..1638702dc7 100644
--- a/tests/docs/how-tos/prog_deploy/prog_deploy.py
+++ b/tests/docs/how-tos/prog_deploy/prog_deploy.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 import os
 from os import path
 
diff --git a/tests/docs/how-tos/prog_deploy/prog_remove.py b/tests/docs/how-tos/prog_deploy/prog_remove.py
index c26f27f8e9..5e8acbceea 100644
--- a/tests/docs/how-tos/prog_deploy/prog_remove.py
+++ b/tests/docs/how-tos/prog_deploy/prog_remove.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 # ..
 from typegraph.graph.tg_deploy import (
     TypegateConnectionOptions,
diff --git a/tests/e2e/cli/artifacts/ops.ts b/tests/e2e/cli/artifacts/ops.ts
index cbd08ebe39..dc0fea8ce4 100644
--- a/tests/e2e/cli/artifacts/ops.ts
+++ b/tests/e2e/cli/artifacts/ops.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 export function add({ lhs, rhs }: { lhs: number; rhs: number }) {
   return lhs + rhs;
 }
diff --git a/tests/e2e/cli/templates/migration.py b/tests/e2e/cli/templates/migration.py
index dbabc8ba0b..905c917caa 100644
--- a/tests/e2e/cli/templates/migration.py
+++ b/tests/e2e/cli/templates/migration.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, t, Graph, Policy
 from typegraph.providers import PrismaRuntime
 
diff --git a/tests/e2e/nextjs/apollo/app/layout.tsx b/tests/e2e/nextjs/apollo/app/layout.tsx
index 5ff842ef07..53574ea2cf 100644
--- a/tests/e2e/nextjs/apollo/app/layout.tsx
+++ b/tests/e2e/nextjs/apollo/app/layout.tsx
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 export const metadata = {
   title: "Next.js",
   description: "Generated by Next.js",
diff --git a/tests/e2e/nextjs/apollo/app/page.tsx b/tests/e2e/nextjs/apollo/app/page.tsx
index ad61ffa67c..a631ae64fb 100644
--- a/tests/e2e/nextjs/apollo/app/page.tsx
+++ b/tests/e2e/nextjs/apollo/app/page.tsx
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 export default function Home() {
   return (
     <div>
diff --git a/tests/e2e/nextjs/typegraph/apollo.py b/tests/e2e/nextjs/typegraph/apollo.py
index fcf770f934..e862eec119 100644
--- a/tests/e2e/nextjs/typegraph/apollo.py
+++ b/tests/e2e/nextjs/typegraph/apollo.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import Graph, Policy, t, typegraph
 from typegraph.graph.params import Cors
 from typegraph.providers.aws import S3Runtime
diff --git a/tests/e2e/typegraph/typegraphs/python/multiple_runtimes.py b/tests/e2e/typegraph/typegraphs/python/multiple_runtimes.py
index a89cb68896..4d676167fe 100644
--- a/tests/e2e/typegraph/typegraphs/python/multiple_runtimes.py
+++ b/tests/e2e/typegraph/typegraphs/python/multiple_runtimes.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import Graph, t, typegraph
 from typegraph.policy import Policy
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/e2e/typegraph/validator.py b/tests/e2e/typegraph/validator.py
index 41ad8293c3..8c3cbf7e45 100644
--- a/tests/e2e/typegraph/validator.py
+++ b/tests/e2e/typegraph/validator.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, t, Graph
 from typegraph.runtimes import DenoRuntime
 
diff --git a/tests/graphql/graphql.py b/tests/graphql/graphql.py
index 3a66f54ac8..1721419a78 100644
--- a/tests/graphql/graphql.py
+++ b/tests/graphql/graphql.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, effects, Policy, t, Graph
 from typegraph.runtimes.graphql import GraphQLRuntime
 
diff --git a/tests/importers/gql_original.py b/tests/importers/gql_original.py
index 796662501f..ba8204a9e6 100644
--- a/tests/importers/gql_original.py
+++ b/tests/importers/gql_original.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 import json
 from pathlib import Path
 
diff --git a/tests/importers/introspection.py b/tests/importers/introspection.py
index ffa5fd3e67..88c483c76c 100644
--- a/tests/importers/introspection.py
+++ b/tests/importers/introspection.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from pathlib import Path
 
 import httpx
diff --git a/tests/importers/openapi_original.py b/tests/importers/openapi_original.py
index e18fab12e2..88bbfbfe9c 100644
--- a/tests/importers/openapi_original.py
+++ b/tests/importers/openapi_original.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 import json
 from pathlib import Path
 
diff --git a/tests/importers/openapi_schema.py b/tests/importers/openapi_schema.py
index e9a93d533d..cf14f6ff11 100644
--- a/tests/importers/openapi_schema.py
+++ b/tests/importers/openapi_schema.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from pathlib import Path
 
 import httpx
diff --git a/tests/injection/injection.py b/tests/injection/injection.py
index 67d28c8ce2..a01c3b7b58 100644
--- a/tests/injection/injection.py
+++ b/tests/injection/injection.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, effects, Policy, t, Graph
 from typegraph.providers.prisma import PrismaRuntime
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/injection/nested_context.py b/tests/injection/nested_context.py
index e25c9e0ccb..5663dc34dd 100644
--- a/tests/injection/nested_context.py
+++ b/tests/injection/nested_context.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.runtimes import DenoRuntime
 
diff --git a/tests/injection/random_injection.py b/tests/injection/random_injection.py
index dc0d0fc1dc..10de670d56 100644
--- a/tests/injection/random_injection.py
+++ b/tests/injection/random_injection.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.policy import Policy
 from typegraph.runtimes.deno import DenoRuntime
 
diff --git a/tests/internal/internal.py b/tests/internal/internal.py
index 63ac78dc03..cc2c66aa14 100644
--- a/tests/internal/internal.py
+++ b/tests/internal/internal.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/internal/py/logic_types.py b/tests/internal/py/logic_types.py
index 125ceaa52d..1946de506e 100644
--- a/tests/internal/py/logic_types.py
+++ b/tests/internal/py/logic_types.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from types import NoneType
 from typing import Callable, List, Union, get_origin, ForwardRef, Any
 from dataclasses import dataclass, asdict, fields
diff --git a/tests/introspection/union_either.py b/tests/introspection/union_either.py
index 3db6e4d495..52855df50f 100644
--- a/tests/introspection/union_either.py
+++ b/tests/introspection/union_either.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.runtimes.deno import DenoRuntime
 
diff --git a/tests/metagen/typegraphs/identities.py b/tests/metagen/typegraphs/identities.py
index 6c57c14b98..eb8cef8c1d 100644
--- a/tests/metagen/typegraphs/identities.py
+++ b/tests/metagen/typegraphs/identities.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.runtimes.python import PythonRuntime
 from typegraph.runtimes.wasm import WasmRuntime
diff --git a/tests/metagen/typegraphs/identities/py/handlers.py b/tests/metagen/typegraphs/identities/py/handlers.py
index 02375b1473..d00f8a9963 100644
--- a/tests/metagen/typegraphs/identities/py/handlers.py
+++ b/tests/metagen/typegraphs/identities/py/handlers.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from .handlers_types import (
     Composites,
     typed_cycles,
diff --git a/tests/metagen/typegraphs/identities/py/handlers_types.py b/tests/metagen/typegraphs/identities/py/handlers_types.py
index cdf0871dd3..23ecb7c20e 100644
--- a/tests/metagen/typegraphs/identities/py/handlers_types.py
+++ b/tests/metagen/typegraphs/identities/py/handlers_types.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from types import NoneType
 from typing import Callable, List, Union, get_origin, ForwardRef, Any
 from dataclasses import dataclass, asdict, fields
diff --git a/tests/metagen/typegraphs/identities/ts/fdk.ts b/tests/metagen/typegraphs/identities/ts/fdk.ts
index edcee66bf3..b3926d9dfa 100644
--- a/tests/metagen/typegraphs/identities/ts/fdk.ts
+++ b/tests/metagen/typegraphs/identities/ts/fdk.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 // This file was @generated by metagen and is intended
 // to be generated again on subsequent metagen runs.
 
diff --git a/tests/metagen/typegraphs/metagen.py b/tests/metagen/typegraphs/metagen.py
index 889734cecc..758d93d0ae 100644
--- a/tests/metagen/typegraphs/metagen.py
+++ b/tests/metagen/typegraphs/metagen.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from dataclasses import asdict
 from os import getenv
 from typegraph import typegraph, Policy, t, Graph
diff --git a/tests/metagen/typegraphs/python.py b/tests/metagen/typegraphs/python.py
index 0461795936..e2f89bfd2c 100644
--- a/tests/metagen/typegraphs/python.py
+++ b/tests/metagen/typegraphs/python.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.runtimes.python import PythonRuntime
 
diff --git a/tests/metagen/typegraphs/sample/py/client.py b/tests/metagen/typegraphs/sample/py/client.py
index 935d695e9a..0d84e1e127 100644
--- a/tests/metagen/typegraphs/sample/py/client.py
+++ b/tests/metagen/typegraphs/sample/py/client.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 # This file was @generated by metagen and is intended
 # to be generated again on subsequent metagen runs.
 
diff --git a/tests/metagen/typegraphs/sample/py/main.py b/tests/metagen/typegraphs/sample/py/main.py
index e44d491f0b..2f9ed1d14b 100644
--- a/tests/metagen/typegraphs/sample/py/main.py
+++ b/tests/metagen/typegraphs/sample/py/main.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from client import (
     QueryGraph,
     PostSelections,
diff --git a/tests/metagen/typegraphs/sample/ts/client.ts b/tests/metagen/typegraphs/sample/ts/client.ts
index 4bbf3fc00f..34de517d33 100644
--- a/tests/metagen/typegraphs/sample/ts/client.ts
+++ b/tests/metagen/typegraphs/sample/ts/client.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 // This file was @generated by metagen and is intended
 // to be generated again on subsequent metagen runs.
 
diff --git a/tests/multi_typegraph/multi_typegraph.py b/tests/multi_typegraph/multi_typegraph.py
index 43a0331a32..bdafd8645f 100644
--- a/tests/multi_typegraph/multi_typegraph.py
+++ b/tests/multi_typegraph/multi_typegraph.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/nesting/nesting.py b/tests/nesting/nesting.py
index e0c15a0047..9fcb3566f1 100644
--- a/tests/nesting/nesting.py
+++ b/tests/nesting/nesting.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.runtimes.http import HttpRuntime
 
diff --git a/tests/params/apply.py b/tests/params/apply.py
index f47e11f1d7..ad71ae1d6b 100644
--- a/tests/params/apply.py
+++ b/tests/params/apply.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import Graph, Policy, t, typegraph
 from typegraph.runtimes.deno import DenoRuntime
 
diff --git a/tests/params/apply_nested_context.py b/tests/params/apply_nested_context.py
index 1335bdbac9..5ffdc69908 100644
--- a/tests/params/apply_nested_context.py
+++ b/tests/params/apply_nested_context.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, t, Graph, Policy
 from typegraph.runtimes import DenoRuntime
 
diff --git a/tests/params/prisma_apply.py b/tests/params/prisma_apply.py
index 78afba91b7..fc6b4c5304 100644
--- a/tests/params/prisma_apply.py
+++ b/tests/params/prisma_apply.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import Graph, Policy, t, typegraph
 from typegraph.providers import PrismaRuntime
 
diff --git a/tests/planner/planner.py b/tests/planner/planner.py
index 88d75071f0..11911fe5aa 100644
--- a/tests/planner/planner.py
+++ b/tests/planner/planner.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, t, Graph, Policy
 from typegraph.runtimes.deno import DenoRuntime
 
diff --git a/tests/policies/effects_py.py b/tests/policies/effects_py.py
index a1edcd643e..0bbbd06898 100644
--- a/tests/policies/effects_py.py
+++ b/tests/policies/effects_py.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import Graph, Policy, effects, t, typegraph
 from typegraph.graph.params import Auth
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/policies/policies.py b/tests/policies/policies.py
index 8363dbe999..78e308364f 100644
--- a/tests/policies/policies.py
+++ b/tests/policies/policies.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, t, Graph, Policy
 from typegraph.graph.params import Auth
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/policies/policies_jwt.py b/tests/policies/policies_jwt.py
index 8fb1199b71..6410178d49 100644
--- a/tests/policies/policies_jwt.py
+++ b/tests/policies/policies_jwt.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 import re
 
 from typegraph import typegraph, Policy, t, Graph
diff --git a/tests/policies/policies_jwt_format.py b/tests/policies/policies_jwt_format.py
index 28d6ae61b7..6ae596adb9 100644
--- a/tests/policies/policies_jwt_format.py
+++ b/tests/policies/policies_jwt_format.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.graph.params import Auth
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/policies/policies_jwt_injection.py b/tests/policies/policies_jwt_injection.py
index 427b5d9724..bc67e5ed53 100644
--- a/tests/policies/policies_jwt_injection.py
+++ b/tests/policies/policies_jwt_injection.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.graph.params import Auth
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/query_parsers/graphql_namespaces.py b/tests/query_parsers/graphql_namespaces.py
index 6be69ae61c..b70e47cdf0 100644
--- a/tests/query_parsers/graphql_namespaces.py
+++ b/tests/query_parsers/graphql_namespaces.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, effects, Policy, t, Graph
 from typegraph.runtimes.graphql import GraphQLRuntime
 
diff --git a/tests/regression/invalid_ref_error_message/invalid_ref.py b/tests/regression/invalid_ref_error_message/invalid_ref.py
index 452db23bdf..228f0afcad 100644
--- a/tests/regression/invalid_ref_error_message/invalid_ref.py
+++ b/tests/regression/invalid_ref_error_message/invalid_ref.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Graph, Policy, t
 from typegraph.runtimes import DenoRuntime
 
diff --git a/tests/rest/rest_simple.py b/tests/rest/rest_simple.py
index 6496e67874..e2678f2f26 100644
--- a/tests/rest/rest_simple.py
+++ b/tests/rest/rest_simple.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import Graph, Policy, t, typegraph
 from typegraph.runtimes.deno import DenoRuntime
 
diff --git a/tests/runtimes/deno/deno.py b/tests/runtimes/deno/deno.py
index 9d8370c1f0..c29562f9a9 100644
--- a/tests/runtimes/deno/deno.py
+++ b/tests/runtimes/deno/deno.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/runtimes/deno/deno_dep.py b/tests/runtimes/deno/deno_dep.py
index 00ccae2fb1..e30ba0d969 100644
--- a/tests/runtimes/deno/deno_dep.py
+++ b/tests/runtimes/deno/deno_dep.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/runtimes/deno/deno_dir.py b/tests/runtimes/deno/deno_dir.py
index f3ca1b0ad4..a177da89d7 100644
--- a/tests/runtimes/deno/deno_dir.py
+++ b/tests/runtimes/deno/deno_dir.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/runtimes/deno/deno_duplicate_artifact.py b/tests/runtimes/deno/deno_duplicate_artifact.py
index 8b094d0d38..24a7f78175 100644
--- a/tests/runtimes/deno/deno_duplicate_artifact.py
+++ b/tests/runtimes/deno/deno_duplicate_artifact.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/runtimes/deno/deno_globs.py b/tests/runtimes/deno/deno_globs.py
index f0ab6420d7..39737bd582 100644
--- a/tests/runtimes/deno/deno_globs.py
+++ b/tests/runtimes/deno/deno_globs.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/runtimes/deno/deno_no_artifact.py b/tests/runtimes/deno/deno_no_artifact.py
index 681d50fdb9..efdfa35d57 100644
--- a/tests/runtimes/deno/deno_no_artifact.py
+++ b/tests/runtimes/deno/deno_no_artifact.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/runtimes/deno/deno_partial.py b/tests/runtimes/deno/deno_partial.py
index c4441993f8..6d0283ab0c 100644
--- a/tests/runtimes/deno/deno_partial.py
+++ b/tests/runtimes/deno/deno_partial.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/runtimes/deno/deno_reload.py b/tests/runtimes/deno/deno_reload.py
index c126b45e67..f8a1327dc1 100644
--- a/tests/runtimes/deno/deno_reload.py
+++ b/tests/runtimes/deno/deno_reload.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 import os
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
diff --git a/tests/runtimes/graphql/typegraphs/python/graphql.py b/tests/runtimes/graphql/typegraphs/python/graphql.py
index 1c11184b86..e96270a604 100644
--- a/tests/runtimes/graphql/typegraphs/python/graphql.py
+++ b/tests/runtimes/graphql/typegraphs/python/graphql.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.providers.prisma import PrismaRuntime
 from typegraph.runtimes.graphql import GraphQLRuntime
 
diff --git a/tests/runtimes/http/http_content_type.py b/tests/runtimes/http/http_content_type.py
index 9997a2d9f5..1141560c58 100644
--- a/tests/runtimes/http/http_content_type.py
+++ b/tests/runtimes/http/http_content_type.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.runtimes.http import HttpRuntime
 
diff --git a/tests/runtimes/http/http_py.py b/tests/runtimes/http/http_py.py
index 2f3b713469..778f7cebba 100644
--- a/tests/runtimes/http/http_py.py
+++ b/tests/runtimes/http/http_py.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.runtimes.http import HttpRuntime
 
diff --git a/tests/runtimes/prisma/full_prisma_mapping.py b/tests/runtimes/prisma/full_prisma_mapping.py
index 6ab88a46ba..08fc422517 100644
--- a/tests/runtimes/prisma/full_prisma_mapping.py
+++ b/tests/runtimes/prisma/full_prisma_mapping.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.gen.exports.runtimes import EffectUpdate
 from typegraph.providers.prisma import PrismaRuntime
diff --git a/tests/runtimes/prisma/mixed_runtime.py b/tests/runtimes/prisma/mixed_runtime.py
index 2e27d1772b..7ec6cd2baf 100644
--- a/tests/runtimes/prisma/mixed_runtime.py
+++ b/tests/runtimes/prisma/mixed_runtime.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, t, Graph, Policy
 from typegraph.providers.prisma import PrismaRuntime
 from typegraph.runtimes.graphql import GraphQLRuntime
diff --git a/tests/runtimes/prisma/multi_relations.py b/tests/runtimes/prisma/multi_relations.py
index e06d8c933b..45b1182680 100644
--- a/tests/runtimes/prisma/multi_relations.py
+++ b/tests/runtimes/prisma/multi_relations.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.providers.prisma import PrismaRuntime
 
diff --git a/tests/runtimes/prisma/multiple_runtimes.py b/tests/runtimes/prisma/multiple_runtimes.py
index 2b9f8114a1..251b4662c5 100644
--- a/tests/runtimes/prisma/multiple_runtimes.py
+++ b/tests/runtimes/prisma/multiple_runtimes.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import Graph, Policy, t, typegraph
 from typegraph.providers.prisma import PrismaRuntime
 
diff --git a/tests/runtimes/prisma/normal_1_1.py b/tests/runtimes/prisma/normal_1_1.py
index 7837f08ce3..987e45ea6a 100644
--- a/tests/runtimes/prisma/normal_1_1.py
+++ b/tests/runtimes/prisma/normal_1_1.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import Graph, Policy, t, typegraph
 from typegraph.providers.prisma import PrismaRuntime
 
diff --git a/tests/runtimes/prisma/optional_1_1.py b/tests/runtimes/prisma/optional_1_1.py
index b5b0b1f589..d7d5074e10 100644
--- a/tests/runtimes/prisma/optional_1_1.py
+++ b/tests/runtimes/prisma/optional_1_1.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import Graph, Policy, t, typegraph
 from typegraph.providers.prisma import PrismaRuntime
 
diff --git a/tests/runtimes/prisma/optional_1_n.py b/tests/runtimes/prisma/optional_1_n.py
index a580230c28..08f0581f79 100644
--- a/tests/runtimes/prisma/optional_1_n.py
+++ b/tests/runtimes/prisma/optional_1_n.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import Graph, Policy, t, typegraph
 from typegraph.providers.prisma import PrismaRuntime
 
diff --git a/tests/runtimes/prisma/prisma.py b/tests/runtimes/prisma/prisma.py
index 7e7165dabe..ac5aba27bd 100644
--- a/tests/runtimes/prisma/prisma.py
+++ b/tests/runtimes/prisma/prisma.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.providers.prisma import PrismaRuntime
 from typegraph.effects import CREATE
diff --git a/tests/runtimes/prisma/prisma_edgecases.py b/tests/runtimes/prisma/prisma_edgecases.py
index 79964f5330..2086696b12 100644
--- a/tests/runtimes/prisma/prisma_edgecases.py
+++ b/tests/runtimes/prisma/prisma_edgecases.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.providers.prisma import PrismaRuntime
 
diff --git a/tests/runtimes/prisma/schema_generation.py b/tests/runtimes/prisma/schema_generation.py
index 16035e21fe..25c2c4a119 100644
--- a/tests/runtimes/prisma/schema_generation.py
+++ b/tests/runtimes/prisma/schema_generation.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.effects import CREATE, UPDATE
 from typegraph.providers import PrismaRuntime
 from typegraph.runtimes import DenoRuntime
diff --git a/tests/runtimes/python/py/hello.py b/tests/runtimes/python/py/hello.py
index dc9b0d49b8..9c1b96c123 100644
--- a/tests/runtimes/python/py/hello.py
+++ b/tests/runtimes/python/py/hello.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from .nested.dep import hello
 from typing import Dict
 
diff --git a/tests/runtimes/python/py/nested/dep.py b/tests/runtimes/python/py/nested/dep.py
index a8406242a8..6cfce6287a 100644
--- a/tests/runtimes/python/py/nested/dep.py
+++ b/tests/runtimes/python/py/nested/dep.py
@@ -1,2 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
+
 def hello(name: str):
     return f"Hello {name}"
diff --git a/tests/runtimes/python/python.py b/tests/runtimes/python/python.py
index cd3610a8ed..1e00272ac1 100644
--- a/tests/runtimes/python/python.py
+++ b/tests/runtimes/python/python.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.python import PythonRuntime
diff --git a/tests/runtimes/python/python_dir.py b/tests/runtimes/python/python_dir.py
index bbb3e64f6f..184609dd2a 100644
--- a/tests/runtimes/python/python_dir.py
+++ b/tests/runtimes/python/python_dir.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.python import PythonRuntime
diff --git a/tests/runtimes/python/python_duplicate_artifact.py b/tests/runtimes/python/python_duplicate_artifact.py
index 30ca0d82da..1b998c6b86 100644
--- a/tests/runtimes/python/python_duplicate_artifact.py
+++ b/tests/runtimes/python/python_duplicate_artifact.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.python import PythonRuntime
diff --git a/tests/runtimes/python/python_globs.py b/tests/runtimes/python/python_globs.py
index 617d292546..b7d49c9368 100644
--- a/tests/runtimes/python/python_globs.py
+++ b/tests/runtimes/python/python_globs.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.python import PythonRuntime
diff --git a/tests/runtimes/python/python_no_artifact.py b/tests/runtimes/python/python_no_artifact.py
index e9bd61bd9f..b6122af5b1 100644
--- a/tests/runtimes/python/python_no_artifact.py
+++ b/tests/runtimes/python/python_no_artifact.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.python import PythonRuntime
diff --git a/tests/runtimes/random/random_.py b/tests/runtimes/random/random_.py
index 65443e5b3d..a99a3b4886 100644
--- a/tests/runtimes/random/random_.py
+++ b/tests/runtimes/random/random_.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import t, typegraph
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
diff --git a/tests/runtimes/s3/s3.py b/tests/runtimes/s3/s3.py
index dede2e75d8..a5443f3290 100644
--- a/tests/runtimes/s3/s3.py
+++ b/tests/runtimes/s3/s3.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.providers.aws import S3Runtime
 
diff --git a/tests/runtimes/substantial/child_workflow.ts b/tests/runtimes/substantial/child_workflow.ts
index 9e77ccc84e..161dc40e04 100644
--- a/tests/runtimes/substantial/child_workflow.ts
+++ b/tests/runtimes/substantial/child_workflow.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import { Context } from "./imports/common_types.ts";
 
 function apply(pkg: string, oldVersion: string, newVersion: string) {
diff --git a/tests/runtimes/substantial/common.ts b/tests/runtimes/substantial/common.ts
index 6c2f833680..e1514b12f3 100644
--- a/tests/runtimes/substantial/common.ts
+++ b/tests/runtimes/substantial/common.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import { assertEquals, assertExists } from "@std/assert";
 import { connect, parseURL } from "redis";
 import { gql, Meta, sleep } from "../../utils/mod.ts";
diff --git a/tests/runtimes/substantial/imports/common_types.ts b/tests/runtimes/substantial/imports/common_types.ts
index 95cde71752..3d7fe58dc7 100644
--- a/tests/runtimes/substantial/imports/common_types.ts
+++ b/tests/runtimes/substantial/imports/common_types.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 // TODO: include this as part of the metagen generated code
 
 // TODO: merge these
diff --git a/tests/runtimes/substantial/substantial.py b/tests/runtimes/substantial/substantial.py
index 55c2b82a9c..6bc0936289 100644
--- a/tests/runtimes/substantial/substantial.py
+++ b/tests/runtimes/substantial/substantial.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 import os
 from typegraph import typegraph, t, Graph
 from typegraph.policy import Policy
diff --git a/tests/runtimes/substantial/substantial_child_workflow.py b/tests/runtimes/substantial/substantial_child_workflow.py
index 560dae1491..e9a545aadd 100644
--- a/tests/runtimes/substantial/substantial_child_workflow.py
+++ b/tests/runtimes/substantial/substantial_child_workflow.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 import os
 from typegraph import typegraph, t, Graph
 from typegraph.policy import Policy
diff --git a/tests/runtimes/substantial/substantial_test.ts b/tests/runtimes/substantial/substantial_test.ts
index f071401015..fce40e9ff3 100644
--- a/tests/runtimes/substantial/substantial_test.ts
+++ b/tests/runtimes/substantial/substantial_test.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import { basicTestTemplate } from "./common.ts";
 
 basicTestTemplate("memory", {
diff --git a/tests/runtimes/substantial/workflow.ts b/tests/runtimes/substantial/workflow.ts
index 59d7a70737..9722260f21 100644
--- a/tests/runtimes/substantial/workflow.ts
+++ b/tests/runtimes/substantial/workflow.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import {
   Context,
   queryThatTakesAWhile,
diff --git a/tests/runtimes/temporal/temporal.py b/tests/runtimes/temporal/temporal.py
index 3192aa6395..0c35ffb86d 100644
--- a/tests/runtimes/temporal/temporal.py
+++ b/tests/runtimes/temporal/temporal.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import t, typegraph, Policy, Graph
 from typegraph.providers.temporal import TemporalRuntime
 
diff --git a/tests/runtimes/wasm_reflected/wasm_duplicate.py b/tests/runtimes/wasm_reflected/wasm_duplicate.py
index 8f53718569..9ec1e82bb5 100644
--- a/tests/runtimes/wasm_reflected/wasm_duplicate.py
+++ b/tests/runtimes/wasm_reflected/wasm_duplicate.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.wasm import WasmRuntime
diff --git a/tests/runtimes/wasm_reflected/wasm_reflected.py b/tests/runtimes/wasm_reflected/wasm_reflected.py
index f013f31210..7d268c2ea4 100644
--- a/tests/runtimes/wasm_reflected/wasm_reflected.py
+++ b/tests/runtimes/wasm_reflected/wasm_reflected.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.wasm import WasmRuntime
diff --git a/tests/runtimes/wasm_wire/wasm_wire.py b/tests/runtimes/wasm_wire/wasm_wire.py
index c73e19b42f..f5b39d34e7 100644
--- a/tests/runtimes/wasm_wire/wasm_wire.py
+++ b/tests/runtimes/wasm_wire/wasm_wire.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.wasm import WasmRuntime
diff --git a/tests/schema_validation/circular.py b/tests/schema_validation/circular.py
index eaa2401d79..72dba1405e 100644
--- a/tests/schema_validation/circular.py
+++ b/tests/schema_validation/circular.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/schema_validation/type_comparison.py b/tests/schema_validation/type_comparison.py
index 6724fc666d..8852be1656 100644
--- a/tests/schema_validation/type_comparison.py
+++ b/tests/schema_validation/type_comparison.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import t, typegraph, Graph, Policy
 from typegraph.runtimes import DenoRuntime
 
diff --git a/tests/schema_validation/type_comparison_test.ts b/tests/schema_validation/type_comparison_test.ts
index 7ca64b02ce..43941fb967 100644
--- a/tests/schema_validation/type_comparison_test.ts
+++ b/tests/schema_validation/type_comparison_test.ts
@@ -1,3 +1,6 @@
+// Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+// SPDX-License-Identifier: MPL-2.0
+
 import { Meta } from "../utils/mod.ts";
 
 Meta.test("type comparison test", async (t) => {
diff --git a/tests/simple/class_syntax.py b/tests/simple/class_syntax.py
index bd1cf673ab..ff206ad402 100644
--- a/tests/simple/class_syntax.py
+++ b/tests/simple/class_syntax.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.runtimes.deno import DenoRuntime
 
diff --git a/tests/simple/error_message.py b/tests/simple/error_message.py
index 5500e4238a..3b75322e54 100644
--- a/tests/simple/error_message.py
+++ b/tests/simple/error_message.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, effects, Policy, t, Graph
 from typegraph.runtimes import DenoRuntime
 
diff --git a/tests/simple/simple.py b/tests/simple/simple.py
index a7b86fd1c0..ca0cd9a968 100644
--- a/tests/simple/simple.py
+++ b/tests/simple/simple.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.runtimes.deno import DenoRuntime
 
diff --git a/tests/type_nodes/array_of_optional.py b/tests/type_nodes/array_of_optional.py
index 6873243bdd..6f427206c9 100644
--- a/tests/type_nodes/array_of_optional.py
+++ b/tests/type_nodes/array_of_optional.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import Policy, t, typegraph, Graph
 from typegraph.runtimes.deno import DenoRuntime
 
diff --git a/tests/type_nodes/either_node.py b/tests/type_nodes/either_node.py
index e442af7a3b..989a84d398 100644
--- a/tests/type_nodes/either_node.py
+++ b/tests/type_nodes/either_node.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/type_nodes/union_node.py b/tests/type_nodes/union_node.py
index 87c75404fb..ec02fab932 100644
--- a/tests/type_nodes/union_node.py
+++ b/tests/type_nodes/union_node.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/type_nodes/union_node_attr.py b/tests/type_nodes/union_node_attr.py
index c77b8d3c16..056dceb033 100644
--- a/tests/type_nodes/union_node_attr.py
+++ b/tests/type_nodes/union_node_attr.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/type_nodes/union_node_quantifier.py b/tests/type_nodes/union_node_quantifier.py
index 46e92cdc2d..c3befb5f74 100644
--- a/tests/type_nodes/union_node_quantifier.py
+++ b/tests/type_nodes/union_node_quantifier.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph.graph.typegraph import Graph
 from typegraph.policy import Policy
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/typecheck/reduce_py.py b/tests/typecheck/reduce_py.py
index 9829a35cb0..dc4e2ea88f 100644
--- a/tests/typecheck/reduce_py.py
+++ b/tests/typecheck/reduce_py.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import Graph, Policy, t, typegraph
 from typegraph.runtimes.deno import DenoRuntime
 
diff --git a/tests/typecheck/type_alias.py b/tests/typecheck/type_alias.py
index 3f7c068761..913c6dd540 100644
--- a/tests/typecheck/type_alias.py
+++ b/tests/typecheck/type_alias.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.runtimes import RandomRuntime
 from typegraph.providers import PrismaRuntime
diff --git a/tests/typename/typename.py b/tests/typename/typename.py
index a867717f17..6ca4cbcfd9 100644
--- a/tests/typename/typename.py
+++ b/tests/typename/typename.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import Graph, Policy, effects, t, typegraph
 from typegraph.providers.prisma import PrismaRuntime
 from typegraph.runtimes.deno import DenoRuntime
diff --git a/tests/utils/tg_deploy_script.py b/tests/utils/tg_deploy_script.py
index ebaa20c3af..ac9d036680 100644
--- a/tests/utils/tg_deploy_script.py
+++ b/tests/utils/tg_deploy_script.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 import importlib.util as import_util
 import json
 import os
diff --git a/tests/vars/vars.py b/tests/vars/vars.py
index 702b8cad91..fb00295bda 100644
--- a/tests/vars/vars.py
+++ b/tests/vars/vars.py
@@ -1,3 +1,6 @@
+# Copyright Metatype OÜ, licensed under the Mozilla Public License Version 2.0.
+# SPDX-License-Identifier: MPL-2.0
+
 from typegraph import typegraph, Policy, t, Graph
 from typegraph.runtimes.deno import DenoRuntime