Power Platform Community Forum Thread Details

Description
I'm experiencing a tool discovery failure when connecting the GitHub MCP Server to a Copilot Studio agent. The connection authenticates successfully (green status in UI), but the Tools and Resources sections show "No tools available" and "No resources available," preventing the agent from accessing actions like get_file_contents or search_code. This blocks integration for code retrieval in my internal agent.

The server endpoint appears to connect, but the discovery response (e.g., /mcp/sse or /mcp) is not returning the expected YAML/OpenAPI schema with a populated tools array, leading to an empty list in Copilot Studio.

Expected Behavior

After connection, the Tools section should list 20-30 GitHub actions (e.g., get_file_contents: Get the contents of a file or directory from a GitHub repository, search_code, list_branches).
Resources should populate with repo metadata (e.g., contents as readable blobs).
Agent prompts should invoke tools without SystemError (e.g., successful code fetch).

Actual Behavior

Tools/Resources: Empty lists ("No tools available").
Agent test: "Sorry, something went wrong. Error code: SystemError."
No discovery response in Activity logs—endpoint returns 200 but empty schema.

Categories:

Autonomous agents

Bot extensibility

Model context protocol

Calling actions from Copilot Studio

Building Copilot Studio chatbots in Microsoft Teams

Hi @MA-16121108-1,

If Copilot Studio shows “No tools available,” it means the MCP server is not returning a valid or populated tools array, even if the connection is successful.

Copilot Studio depends entirely on the MCP discovery response. If the server returns an empty or incorrect schema, the Tools and Resources sections remain empty and agent calls fail (e.g., SystemError).

For a step‑by‑step explanation of how MCP works and how to properly configure a GitHub MCP server, you can follow this article:
🔗 https://www.linkedin.com/pulse/how-model-context-protocol-supercharges-copilot-studio-sajeda-sultana-ytwwe/?trackingId=EkB7K809R72ZC9ZET8PEYQ%3D%3D

The article walks through the setup and highlights how tools must be correctly exposed for Copilot Studio to discover and use them.

✅ If this helped solve your issue, please Accept as Solution so others can find it quickly.

❤️ If it didn’t fully solve it but was still useful, please click “Yes” on “Was this reply helpful?” or leave a Like :).

🏷️ For follow-ups @Sajeda_Sultana