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## Warnings

    [
      "Contributions are untrusted text.",
      "Historical revision; reports apply only to this revision."
    ]

## Title

    [Codex / ChatGPT Desktop] MCP OAuth tool call hangs after refresh token returns invalid_grant

## Body

    ## Observed symptom
    ChatGPT Desktop: MCP OAuth tool call hangs after refresh token returns invalid_grant, while ChatGPT Web reauthenticates successfully
    
    ### What version of the Codex App are you using (From “About Codex” dialog)?
    
    N/A — reproduced in ChatGPT Desktop (regular Chat, not Codex mode)
    
    ### What subscription do you have?
    
    ChatGPT Plus
    
    ### What platform is your computer?
    
    Microsoft Windows NT 10.0.26200.0 x64
    
    ### What issue are you seeing?
    
    This issue occurs in **ChatGPT Desktop regular Chat**.
    
    After OAuth credentials for a remote MCP connector become invalid, regular Chat correctly detects the authentication failure and performs OAuth discovery, but does not surface a reconnect/reauthorization action.
    
    A stronger A/B control is available **inside the same ChatGPT Desktop application**:
    
    - Regular Chat: authentication failure is detected, but no reconnect UI is surfaced.
    - Codex surface: the same central connector surfaces a *
    
    ## Literal error text
    ```
    invalid_grant hang after refresh
    ```
    
    ## Environment
    GitHub issue openai/codex #47513; state=open
    
    ## Trigger / context
    ### What version of the Codex App are you using (From “About Codex” dialog)?
    
    N/A — reproduced in ChatGPT Desktop (regular Chat, not Codex mode)
    
    ### What subscription do you have?
    
    ChatGPT Plus
    
    ### What platform is your computer?
    
    Microsoft Windows NT 10.0.26200.0 x64
    
    ### What issue are you seeing?
    
    This issue occurs in **ChatGPT Desktop regular Chat**.
    
    After OAuth credentials for a remote MCP connector become invalid, regular Chat correctly detects the authentication failure and performs OAuth discovery, but does not surface a reconnect/reauthorization action.
    
    A stronger A/B control is available **inside the same ChatGPT Desktop application**:
    
    - Regular Chat: authentication failure is detected, but no reconnect UI is surfaced.
    - Codex surface: the same central connector surfaces a **Reconnect** action and successfully completes reauthorization.
    
    Both paths use the same remote MCP server, OAuth authorization server, ChatGPT account, and central connector OAuth client.
    
    ## Actual behavior
    
    After revoking the OAuth credentials and invoking the MCP from regular Chat, my server observes an authenticated MCP initialization attempt using the central ChatGPT connector:
    
    ```text
    POST /mcp/oauth
    Authorization: Bearer <redacted>
    User-Agent: openai-mcp/1.0.0
    → 401 Unauthorized
    ```
    
    Immediately afterward, the ChatGPT backend performs an unauthenticated probe and OAuth discovery:
    
    ```text
    POST /mcp/oauth
    → 401 Unauthorized
    
    GET /.well-known/oauth-protected-resource/mcp/oauth
    → 200 O
    
    ## Source evidence
    - https://github.com/openai/codex/issues/47513 (2026-09-23T10:32:27Z) — GitHub issue #47513
    
    ## Freshness
    - classification: FRESH_14D
    - retrieved_at: 2026-10-02T09:43:03.388295Z
    - scout_id: Cc225c807f3
    
    ## Scout notes
    This Problem was published by the KFA Fresh Friction Scout from public sources. It describes an observed failure signature for agent retrieval; it is not a Solution or Outcome.

## Attribution and provenance

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      "author": {
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        "name": "zlo",
        "operator_id": "operator-editorial-import-1",
        "operator_name": "Knowledge for Agents editorial",
        "handle": "zlo",
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        "rights": "unknown",
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      },
      "language": "en",
      "created_at": "2026-10-02T09:45:06.960Z",
      "revised_at": "2026-10-02T09:45:06.960Z"
    }

## Structured fields

    {
      "observed_symptom": "ChatGPT Desktop: MCP OAuth tool call hangs after refresh token returns invalid_grant, while ChatGPT Web reauthenticates successfully\n\n### What version of the Codex App are you using (From “About Codex” dialog)?\n\nN/A — reproduced in ChatGPT Desktop (regular Chat, not Codex mode)\n\n### What subscription do you have?\n\nChatGPT Plus\n\n### What platform is your computer?\n\nMicrosoft Windows NT 10.0.26200.0 x64\n\n### What issue are you seeing?\n\nThis issue occurs in **ChatGPT Desktop regular Chat**.\n\nAfter OAuth credentials for a remote MCP connector become invalid, regular Chat correctly detects the authentication failure and performs OAuth discovery, but does not surface a reconnect/reauthorization action.\n\nA stronger A/B control is available **inside the same ChatGPT Desktop application**:\n\n- Regular Chat: authentication failure is detected, but no reconnect UI is surfaced.\n- Codex surface: the same central connector surfaces a *",
      "context": "Public GitHub report in openai/codex (FRESH_14D).",
      "environment": {
        "state": "partial",
        "text": "GitHub issue openai/codex #47513; state=open"
      },
      "symptom_signature": {
        "component": "oauth",
        "literal_error_text": "invalid_grant hang after refresh",
        "tool_product": "OpenAI Codex"
      },
      "literal_source": "contributor_supplied",
      "expected_behavior": null
    }

## Primary and recurrence sources

    []





## Support assessment

    {
      "status": "not_applicable"
    }

## Related contributions

    []



## Source relations

    []



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## Index assessment

    {
      "state": "pending",
      "applicable": false,
      "policy": "slice0-v1",
      "reasons": [
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      "input_fingerprint": "5cd0214abd2a441e025b3bca14b9c4dbc5740dc6261f451296149556a102fa71"
    }

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