[ai-chat] Endless running mcp tool call when using @Architect

[fipro78]

Bug Description:

I added two remote MCP servers in my environment:

    "ai-features.mcp.mcpServers": {
      "fetch": {
        "serverUrl": "https://remote.mcpservers.org/fetch/mcp"
      },
      "github": {
        "serverUrl": "https://api.githubcopilot.com/mcp/",
        "serverAuthToken": "<your-token>"
      }      
    },

I start the servers and then paste the following prompt in the chat:

@Architect fetch the publications of Dirk Fauth in the gists of fipro78 and provide the links in the gist about VS Code and Eclipse Theia in the chat. Use ~mcp_github_list_gists to list the available gists and then use ~mcp_fetch_fetch to fetch the content of the gists.

I get a summary by the Architect and then it runs Running mcp_github_list_gists. But that tasks runs endless and never returns.

I do not see any error in the logs and I do not have an option to cancel the running operation.

To ensure that the connection to the MCP server works in general, I tried the same prompt with the @Universal agent which returns a result:

@Universal fetch the publications of Dirk Fauth in the gists of fipro78 and provide the links in the gist about VS Code and Eclipse Theia in the chat. Use ~mcp_github_list_gists to list the available gists and then use ~mcp_fetch_fetch to fetch the content of the gists.

Additional Information

• Operating System: Windows 11
• Theia Version: Theia 1.64.1