claude-code - 💡(How to fix) Fix [BUG] Th405 error message when trying to re-authenticate Gmail via Claude Code That it happens immediately on clicking the link (before any sign-in) [1 participants]

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anthropics/claude-code#55552Fetched 2026-05-03 04:50:27
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Error Message

Error Messages/Logs

Code Example

That you're getting a 405 on https://api.anthropic.com/authorize when trying to re-authenticate Gmail via Claude Code
That it happens immediately on clicking the link (before any sign-in)
RAW_BUFFERClick to expand / collapse

Preflight Checklist

  • I have searched existing issues and this hasn't been reported yet
  • This is a single bug report (please file separate reports for different bugs)
  • I am using the latest version of Claude Code

What's Wrong?

That you're getting a 405 on https://api.anthropic.com/authorize when trying to re-authenticate Gmail via Claude Code That it happens immediately on clicking the link (before any sign-in)

What Should Happen?

For Claude code to log into my Gmail

Error Messages/Logs

That you're getting a 405 on https://api.anthropic.com/authorize when trying to re-authenticate Gmail via Claude Code
That it happens immediately on clicking the link (before any sign-in)

Steps to Reproduce

That you're getting a 405 on https://api.anthropic.com/authorize when trying to re-authenticate Gmail via Claude Code That it happens immediately on clicking the link (before any sign-in)

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

Claude Code v2.1.126

Platform

Anthropic API

Operating System

Other

Terminal/Shell

Terminal.app (macOS)

Additional Information

No response

extent analysis

TL;DR

The issue is likely due to an incorrect HTTP request method being used when trying to re-authenticate Gmail via Claude Code, resulting in a 405 error.

Guidance

  • Verify that the request to https://api.anthropic.com/authorize is using the correct HTTP method (e.g., GET, POST, PUT, etc.).
  • Check the documentation for the Anthropic API to ensure that the authorize endpoint supports the HTTP method being used.
  • Investigate if there were any changes to the API endpoint or the Claude Code version that could be causing the regression.
  • Try to reproduce the issue with a different Claude model or version to isolate the problem.

Example

No code snippet can be provided without more information about the specific request being made.

Notes

The issue lacks information about the specific HTTP request being made and the expected behavior of the authorize endpoint. More details about the request and the API documentation would be necessary to provide a more accurate solution.

Recommendation

Apply workaround: Try using a different HTTP method or checking the API documentation to ensure the correct method is being used, as the issue is likely related to the request method.

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claude-code - 💡(How to fix) Fix [BUG] Th405 error message when trying to re-authenticate Gmail via Claude Code That it happens immediately on clicking the link (before any sign-in) [1 participants]