Description

I'm experiencing persistent HTTP 500 internal server errors when running the claude-code-action on my repository's pull requests. The action starts but fails with an internal error from Anthropic's API.

Environment

• claude-code-action version: @beta
• Model used: claude-3-7-sonnet@20250219
• Using Vertex AI: true
• GitHub Actions runner: GitHub-hosted
• Repository type: Private
• PR size: 44 files changed (675 additions, 190 deletions)

Steps to Reproduce

1. Created PR with changes to multiple files
2. Added workflow file with claude-code-action
3. Triggered the action automatic
4. Action initiates but fails with HTTP 500 error

Error Message

API Error: 500 {"error":{"code":500,"message":"Internal error encountered.","status":"INTERNAL"}}

Relevant Configuration

Run anthropics/claude-code-action@beta
  with:
    use_vertex: true
    anthropic_model: claude-3-7-sonnet@20250219
    direct_prompt: "Please review this PR. Look at the changes and provide thoughtful feedback on:
  - Code quality and best practices
  - Potential bugs or issues
  - Suggestions for improvements or making the code simpler
  - Overall architecture and design decisions
  - compliance with solid principles

Attempts to Resolve

• Have tried running the action multiple times
• The action consistently fails with the same HTTP 500 error
• I have tried with small PRs and big PR, it fails both ways.
• All authentication credentials appear to be correctly configured

Any guidance would be greatly appreciated. I'm happy to provide additional information if needed.