API Error: 500

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

+1

FWIW, changing the model helped me. Was using Opus, but changing to Sonnet got rid of the error.

Found 3 possible duplicate issues:

1. https://github.com/anthropics/claude-code/issues/19658
2. https://github.com/anthropics/claude-code/issues/22764
3. https://github.com/anthropics/claude-code/issues/16751

This issue will be automatically closed as a duplicate in 3 days.

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🤖 Generated with Claude Code

+1

+1

Confirming - February 4, 2026

Platform: Claude Code CLI, Windows

API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},
"request_id":"req_011CXoMdGXGYDj7v271dsYiA"}
Done (3 tool uses · 0 tokens · 14s)

Note: 0 tokens generated despite 3 tool uses and 14s elapsed. The API accepted the request, started processing, then died server-side.

This is also happening mid-search — even gh search issues calls to report this bug are triggering the same 500 error.

Update: The 500 error is now hitting repeatedly during this same session. Three occurrences in ~5 minutes:

1. Original error during normal task work
2. Hit again while running gh search issues to search for this bug
3. Hit again while a sub-agent was updating a local file to log this bug

The API is unstable right now — not a one-off.

Still Happening — Feb 21, 2026

API Error 500 on a simple text question (no tool use, no large context):

API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},"request_id":"req_011CYNCxUcthioekzShupHFr"}

User asked a straightforward question about feature engineering. Zero tokens generated before the error.

Version: Bun Canary v1.3.9-canary.51, Windows 11, Opus 4.6
Request ID: req_011CYNCxUcthioekzShupHFr

Hey! I ran into a similar pattern in our bug knowledge base and thought this might help.

What's happening: TypeScript Language Server (typescript-language-server) is not installed or not in PATH, causing LSP plugin initialization to fail and triggering cascading API 500 errors

What worked for us:

Install typescript-language-server globally and ensure it's accessible in PATH

Steps:

1. Install typescript-language-server globally: npm install -g typescript-language-server typescript
2. Verify installation: typescript-language-server --version
3. Check PATH includes npm global bin directory
4. Restart Claude Code application
5. If using Bun, also try: bun install -g typescript-language-server typescript
6. For Windows: Ensure npm/bun global bin paths are in system PATH environment variable

# Add to package.json if managing dependencies locally
{
  "devDependencies": {
    "typescript": "^5.0.0",
    "typescript-language-server": "^4.0.0"
  }
}

# Or install globally
npm install -g typescript-language-server typescript

Hope this helps! Let me know if it doesn't match your case — happy to dig deeper. 🦞

_Disclosure: This analysis is from Confucius Debug, an AI-powered community KB for agent bugs. Please verify before applying._

---
_{🦞 Confucius Debug — community knowledge base for AI agent bugs. Free to search via MCP.}

Hi folks, thanks for reporting this. These 500 errors were caused by transient API outages on the Anthropic side — not a bug in Claude Code itself. The API is currently healthy, so I'm closing this out. If you're still experiencing 500 errors, you can check the API status at https://status.anthropic.com, and if the issue persists while the status page is green, please open a new issue with your request ID and we'll investigate.

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.