diff --git a/.editorconfig b/.editorconfig
index b6249fbb09..9a2273c794 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -5,6 +5,10 @@ charset = utf-8
 insert_final_newline = true
 trim_trailing_whitespace = true
 
+[*.xml]
+indent_size = 2
+indent_style = space
+
 [*.yaml]
 indent_size = 2
 indent_style = space
diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index c00267ff51..2ded2d3cf3 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -74,6 +74,19 @@ about what you're working on, you can contact us via the
   ```
 
   to automatically fix coding standard issues.
+- Run
+
+  ```shell
+  make static-code-analysis
+  ```
+
+  to run a static code analysis or, if applicable, run
+
+  ```shell
+  make static-code-analysis-baseline
+  ```
+
+  to regenerate the baseline.
 - Review the change once more just before submitting it.
 
 ## What happens after submitting contribution?
@@ -133,7 +146,20 @@ Having said that, here are the organizational rules:
    ```shell
    make coding-standards
    ```
+6. Run
+
+  ```shell
+  make static-code-analysis
+  ```
+
+  to run a static code analysis or, if applicable, run
+
+  ```shell
+  make static-code-analysis-baseline
+  ```
+
+  to regenerate the baseline.
 
-6. Use reasonable commit messages.
+7. Use reasonable commit messages.
 
 Thank you for contributing to https://www.php.net!
diff --git a/.github/workflows/integrate.yaml b/.github/workflows/integrate.yaml
index e4d6abcd00..e635a75913 100644
--- a/.github/workflows/integrate.yaml
+++ b/.github/workflows/integrate.yaml
@@ -77,7 +77,7 @@ jobs:
         uses: "shivammathur/setup-php@v2"
         with:
           coverage: "none"
-          extensions: "none, curl, dom, json, mbstring, tokenizer, xml, xmlwriter"
+          extensions: "none, curl, dom, json, mbstring, simplexml, tokenizer, xml, xmlwriter"
           php-version: "${{ matrix.php-version }}"
 
       - name: "Set up problem matchers for PHP"
@@ -102,6 +102,49 @@ jobs:
       - name: "Run friendsofphp/php-cs-fixer"
         run: "vendor/bin/php-cs-fixer fix --ansi --config=.php-cs-fixer.php --diff --dry-run --show-progress=dots --verbose"
 
+  static-code-analysis:
+    name: "Static Code Analysis"
+
+    runs-on: "ubuntu-latest"
+
+    strategy:
+      matrix:
+        php-version:
+          - "8.2"
+
+        dependencies:
+          - "locked"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v3"
+
+      - name: "Set up PHP"
+        uses: "shivammathur/setup-php@v2"
+        with:
+          coverage: "none"
+          extensions: "none, dom, json, mbstring, opcache, pcntl, posix, simplexml, tokenizer"
+          php-version: "${{ matrix.php-version }}"
+
+      - name: "Set up problem matchers for PHP"
+        run: "echo \"::add-matcher::${{ runner.tool_cache }}/php.json\""
+
+      - name: "Determine composer cache directory"
+        run: "echo \"COMPOSER_CACHE_DIR=$(composer config cache-dir)\" >> $GITHUB_ENV"
+
+      - name: "Cache dependencies installed with composer"
+        uses: "actions/cache@v3"
+        with:
+          path: "${{ env.COMPOSER_CACHE_DIR }}"
+          key: "php-${{ matrix.php-version }}-composer-${{ hashFiles('composer.lock') }}"
+          restore-keys: "php-${{ matrix.php-version }}-composer-"
+
+      - name: "Install dependencies with composer"
+        run: "composer install --ansi --no-interaction --no-progress"
+
+      - name: "Run vimeo/psalm"
+        run: "vendor/bin/psalm --config=psalm.xml --output-format=github --shepherd --show-info=false --stats --threads=4"
+
   tests:
     name: "Tests"
 
diff --git a/Makefile b/Makefile
index 23b2f9c321..0f656059e7 100644
--- a/Makefile
+++ b/Makefile
@@ -21,6 +21,14 @@ code-coverage: vendor ## Collects coverage from running tests with phpunit/phpun
 coding-standards: vendor ## Fixes code style issues with friendsofphp/php-cs-fixer
 	vendor/bin/php-cs-fixer fix --config=.php-cs-fixer.php --diff --show-progress=dots --verbose
 
+.PHONY: static-code-analysis
+static-code-analysis: vendor ## Runs a static code analysis with vimeo/psalm
+	vendor/bin/psalm --config=psalm.xml --show-info=true --stats --threads=4
+
+.PHONY: static-code-analysis-baseline
+static-code-analysis-baseline: vendor ## Generates a baseline for static code analysis with vimeo/psalm
+	vendor/bin/psalm --config=psalm.xml --set-baseline=psalm-baseline.xml
+
 .PHONY: tests
 tests: vendor ## Runs unit and end-to-end tests with phpunit/phpunit
 	vendor/bin/phpunit --configuration=tests/phpunit.xml --testsuite=unit
diff --git a/README.md b/README.md
index 39b7c4c47b..80ed7f1091 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
 [![Integrate](https://github.com/php/web-php/actions/workflows/integrate.yaml/badge.svg)](https://github.com/php/web-php/actions/workflows/integrate.yaml)
+[![Type Coverage](https://shepherd.dev/github/php/web-php/coverage.svg)](https://shepherd.dev/github/php/web-php)
 
 ## Local development
 
diff --git a/psalm-baseline.xml b/psalm-baseline.xml
new file mode 100644
index 0000000000..13cad7ad67
--- /dev/null
+++ b/psalm-baseline.xml
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<files psalm-version="5.21.1@8c473e2437be8b6a8fd8f630f0f11a16b114c494"/>
diff --git a/psalm.xml b/psalm.xml
new file mode 100644
index 0000000000..c2644f0f71
--- /dev/null
+++ b/psalm.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0"?>
+<psalm
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xmlns="https://getpsalm.org/schema/config"
+  xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
+  cacheDirectory=".build/psalm/"
+  errorBaseline="psalm-baseline.xml"
+  errorLevel="8"
+>
+  <projectFiles>
+    <directory name="src"/>
+    <directory name="tests"/>
+  </projectFiles>
+</psalm>