32600 error code when trying to connect to mcp with openai responses API

リポジトリのファイルもテストも指定されていません。示されている OpenAI Responses API リクエストを、一覧にあるツールを使って https://api.githubcopilot.com/mcp/ に対して再現し、その後、コード 32600 を生成する MCP セッションの終了を追跡してください。互換性またはリクエストの問題を特定し、同じリクエストでセッションが終了しなくなったことを検証できれば完了です。

Describe the bug

I have been trying to use the githup-mcp as tool in the openai responses API and I seem to be connecting but keep getting

"error": { "type": "mcp_protocol_error", "code": 32600, "message": "Session terminated" },

even with simple calls such as return 5 most recent issue from a particular repo

Current code running

    const resp = await client.responses.create({
      model: session.model,
      temperature: 0,
      parallel_tool_calls: false,
      input: [
        { role: "system", content: [{ type: "input_text", text: "Exactly one MCP tool call; no optional fields." }] },
        { role: "user", content: [{ type: "input_text", text:
          'Call "list_issues" and return the 5 most recent issues with exactly: {"query":"repo:github/github-mcp-server"}'  
        }] },
      ],
      tools: [
        {
          type: "mcp",
          server_label: "github",
          server_url: "https://api.githubcopilot.com/mcp/",
          headers: {
            Authorization: `Bearer ${process.env.GITHUB_READ_ONLY_API_KEY}`,
          },
          require_approval: "never",
          allowed_tools: [
            "search_repositories",
            "search_issues",
            "get_issue",
            "list_issues",
          ],
        }
      ],
      max_output_tokens: 200,
    });

Any tips or help would be greatly appreciated have been trying all kinds of types of inputs and nothing is working. Thanks.