diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0fa45e7..8a27457 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - Add get morphoelectric (me) model tool
 - BlueNaaS simulation tool.
+- BlueNaaS tool test.
 
 ## [0.1.1] - 26.09.2024
 
diff --git a/src/neuroagent/tools/bluenaas_tool.py b/src/neuroagent/tools/bluenaas_tool.py
index 1c7cc6f..4fb7bf3 100644
--- a/src/neuroagent/tools/bluenaas_tool.py
+++ b/src/neuroagent/tools/bluenaas_tool.py
@@ -107,6 +107,52 @@ async def _arun(
     ) -> BaseToolOutput:
         """Run the BlueNaaS tool."""
         logger.info("Running BlueNaaS tool")
+        json_api = self.create_json_api(
+            current_injection__inject_to=current_injection__inject_to,
+            current_injection__stimulus__stimulus_type=current_injection__stimulus__stimulus_type,
+            current_injection__stimulus__stimulus_protocol=current_injection__stimulus__stimulus_protocol,
+            current_injection__stimulus__amplitudes=current_injection__stimulus__amplitudes,
+            record_from=record_from,
+            conditions__celsius=conditions__celsius,
+            conditions__vinit=conditions__vinit,
+            conditions__hypamp=conditions__hypamp,
+            conditions__max_time=conditions__max_time,
+            conditions__seed=conditions__seed,
+        )
+
+        try:
+            _ = await self.metadata["httpx_client"].post(
+                url=self.metadata["url"],
+                params={"model_id": me_model_id},
+                headers={"Authorization": f'Bearer {self.metadata["token"]}'},
+                json=json_api,
+                timeout=5.0,
+            )
+
+            return BlueNaaSOutput(status="success")
+
+        except Exception as e:
+            raise ToolException(str(e), self.name)
+
+    @staticmethod
+    def create_json_api(
+        current_injection__inject_to: str = "soma[0]",
+        current_injection__stimulus__stimulus_type: Literal[
+            "current_clamp", "voltage_clamp", "conductance"
+        ] = "current_clamp",
+        current_injection__stimulus__stimulus_protocol: Literal[
+            "ap_waveform", "idrest", "iv", "fire_pattern"
+        ] = "ap_waveform",
+        current_injection__stimulus__amplitudes: list[float] | None = None,
+        record_from: list[RecordingLocation] | None = None,
+        conditions__celsius: int = 34,
+        conditions__vinit: int = -73,
+        conditions__hypamp: int = 0,
+        conditions__max_time: int = 100,
+        conditions__time_step: float = 0.05,
+        conditions__seed: int = 100,
+    ) -> dict[str, Any]:
+        """Based on the simulation config, create a valid JSON for the API."""
         if not current_injection__stimulus__amplitudes:
             current_injection__stimulus__amplitudes = [0.1]
         if not record_from:
@@ -132,16 +178,4 @@ async def _arun(
             "type": "single-neuron-simulation",
             "simulationDuration": conditions__max_time,
         }
-        try:
-            _ = await self.metadata["httpx_client"].post(
-                url=self.metadata["url"],
-                params={"model_id": me_model_id},
-                headers={"Authorization": f'Bearer {self.metadata["token"]}'},
-                json=json_api,
-                timeout=5.0,
-            )
-
-            return BlueNaaSOutput(status="success")
-
-        except Exception as e:
-            raise ToolException(str(e), self.name)
+        return json_api
diff --git a/tests/tools/test_bluenaas_tool.py b/tests/tools/test_bluenaas_tool.py
new file mode 100644
index 0000000..0d610f9
--- /dev/null
+++ b/tests/tools/test_bluenaas_tool.py
@@ -0,0 +1,98 @@
+"""Tests BlueNaaS tool."""
+
+import httpx
+import pytest
+from langchain_core.tools import ToolException
+
+from neuroagent.tools import BlueNaaSTool
+from neuroagent.tools.bluenaas_tool import BlueNaaSOutput, RecordingLocation
+
+
+@pytest.mark.asyncio
+async def test_arun(httpx_mock):
+    me_model_id = "great_id"
+    url = "http://fake_url"
+
+    httpx_mock.add_response(
+        url=url + f"?model_id={me_model_id}",
+        json={"t": [0.05, 0.1, 0.15, 0.2], "v": [-1.14, -0.67, -1.78]},
+    )
+    tool = BlueNaaSTool(
+        metadata={
+            "url": url,
+            "httpx_client": httpx.AsyncClient(),
+            "token": "fake_token",
+        }
+    )
+    response = await tool._arun(
+        me_model_id=me_model_id,
+        conditions__celsius=7,
+        current_injection__inject_to="axon[1]",
+    )
+    assert isinstance(response, BlueNaaSOutput)
+
+
+@pytest.mark.asyncio
+async def test_arun_errors(httpx_mock, brain_region_json_path, tmp_path):
+    url = "http://fake_url"
+    httpx_mock.add_exception(httpx.ReadTimeout("Unable to read within timeout"))
+
+    tool = BlueNaaSTool(
+        metadata={
+            "url": url,
+            "httpx_client": httpx.AsyncClient(),
+            "token": "fake_token",
+        }
+    )
+    with pytest.raises(ToolException) as tool_exception:
+        _ = await tool._arun(
+            me_model_id="great_id",
+        )
+
+    assert tool_exception.value.args[0] == "Unable to read within timeout"
+
+
+def test_create_json_api():
+    url = "http://fake_url"
+
+    tool = BlueNaaSTool(
+        metadata={
+            "url": url,
+            "httpx_client": httpx.AsyncClient(),
+            "token": "fake_token",
+        }
+    )
+
+    json_api = tool.create_json_api(
+        conditions__vinit=-3,
+        current_injection__stimulus__stimulus_type="conductance",
+        record_from=[
+            RecordingLocation(),
+            RecordingLocation(section="axon[78]", offset=0.1),
+        ],
+        current_injection__stimulus__amplitudes=[0.1, 0.5],
+    )
+    assert json_api == {
+        "currentInjection": {
+            "injectTo": "soma[0]",
+            "stimulus": {
+                "stimulusType": "conductance",
+                "stimulusProtocol": "ap_waveform",
+                "amplitudes": [0.1, 0.5],
+            },
+        },
+        "recordFrom": [
+            {"section": "soma[0]", "offset": 0.5},
+            {"section": "axon[78]", "offset": 0.1},
+        ],
+        "conditions": {
+            "celsius": 34,
+            "vinit": -3,
+            "hypamp": 0,
+            "max_time": 100,
+            "time_step": 0.05,
+            "seed": 100,
+        },
+        "type": "single-neuron-simulation",
+        "simulationDuration": 100,
+    }