claude-code - 💡(How to fix) Fix API Error 500 - Internal server error occurring repeatedly [3 comments, 4 participants]

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anthropics/claude-code#48635Fetched 2026-04-16 06:55:05
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I'm getting repeated 500 Internal Server Error responses from the API.

Error details

  • Error type: api_error
  • Message: Internal server error
  • Request ID: req_011Ca5kNF6wpupoM4wnQeMwn

Environment

  • OS: Windows 11
  • Claude Code version: [tu versión, la ves con claude --version]
  • Model: claude-opus-4-6

Steps to reproduce

  1. Using Claude Code normally
  2. The error appears repeatedly during conversation

Expected behavior

Normal API responses without 500 errors

Error Message

API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},"request_id":"req_011Ca5kNF6wpupoM4wnQeMwn"}

Root Cause

I'm getting repeated 500 Internal Server Error responses from the API.

Error details

  • Error type: api_error
  • Message: Internal server error
  • Request ID: req_011Ca5kNF6wpupoM4wnQeMwn

Environment

  • OS: Windows 11
  • Claude Code version: [tu versión, la ves con claude --version]
  • Model: claude-opus-4-6

Steps to reproduce

  1. Using Claude Code normally
  2. The error appears repeatedly during conversation

Expected behavior

Normal API responses without 500 errors

Code Example

API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},"request_id":"req_011Ca5kNF6wpupoM4wnQeMwn"}
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?

Description

I'm getting repeated 500 Internal Server Error responses from the API.

Error details

  • Error type: api_error
  • Message: Internal server error
  • Request ID: req_011Ca5kNF6wpupoM4wnQeMwn

Environment

  • OS: Windows 11
  • Claude Code version: [tu versión, la ves con claude --version]
  • Model: claude-opus-4-6

Steps to reproduce

  1. Using Claude Code normally
  2. The error appears repeatedly during conversation

Expected behavior

Normal API responses without 500 errors

What Should Happen?

API should return normal responses without 500 errors during regular conversation.

Error Messages/Logs

API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},"request_id":"req_011Ca5kNF6wpupoM4wnQeMwn"}

Steps to Reproduce

  1. Open Claude Code in terminal
  2. Start a normal conversation
  3. Send any message
  4. Error 500 appears repeatedly

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

No response

Claude Code Version

2.1.109 (Claude Code)

Platform

Other

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

The error occurs intermittently but frequently during normal usage. No specific action triggers it consistently.

extent analysis

TL;DR

The issue can be mitigated by investigating the API request ID for more detailed error information and checking for any known issues with the Claude Code version 2.1.109.

Guidance

  • Investigate the API request ID req_011Ca5kNF6wpupoM4wnQeMwn for more detailed error information that might be available in the API logs or support resources.
  • Check the Claude Code documentation or support channels for any known issues or updates related to version 2.1.109 that could be causing the intermittent 500 Internal Server Error responses.
  • Since the error occurs intermittently, try to reproduce the issue multiple times to see if there's a pattern or specific conditions under which the error appears more frequently.
  • Consider reaching out to the Claude Code support team with the provided error details, including the request ID and the version of Claude Code being used, for more personalized assistance.

Example

No specific code snippet is applicable in this scenario as the issue seems related to the interaction with the Claude Code API rather than a coding error.

Notes

The lack of information about the last working version and the intermittent nature of the error make it challenging to pinpoint the exact cause. The guidance provided is aimed at gathering more information and troubleshooting rather than applying a direct fix.

Recommendation

Apply workaround: Given the intermittent nature of the issue and the lack of a clear cause, the best course of action is to apply workarounds such as investigating the request ID for more information and checking for known issues with the current version of Claude Code.

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claude-code - 💡(How to fix) Fix API Error 500 - Internal server error occurring repeatedly [3 comments, 4 participants]