Using Claude Code GitHub Action with GLM Coding Plan by Z.ai

I recently attempted to migrate a Claude Code GitHub Action to work with the GLM Coding Plan by Z.ai. While Z.ai's official guide shows using environment variables, the GitHub Action requires a slightly different approach.

Minimal Working Configuration

Here's the essential part of the .github/workflows/claude.yml file:

- name: Run Claude Code
  id: claude
  uses: anthropics/claude-code-action@v1
  env:
      NODE_VERSION: '22.x'
      ANTHROPIC_BASE_URL: 'https://api.z.ai/api/anthropic'
  with:
      anthropic_api_key: ${{ secrets.ZHIPU_API_KEY }}

Key Differences from Z.ai's Official Guide

For the Claude Code CLI, Z.ai's documentation shows:

export ANTHROPIC_BASE_URL=https://api.z.ai/api/anthropic
export ANTHROPIC_AUTH_TOKEN=YOUR_API_KEY

However, for the GitHub Action, you need to:

1. Set ANTHROPIC_BASE_URL as an environment variable
2. Pass the API key via the anthropic_api_key parameter instead of ANTHROPIC_AUTH_TOKEN

Setup Steps

1. Add the workflow file to .github/workflows/claude.yml
2. Create a ZHIPU_API_KEY secret in your GitHub repo settings (naming it this way helps avoid accidentally using the Claude API with the Z.ai API key)
3. Comment @claude on any issue or PR to trigger the action

That's it! Claude Code will now respond to your mentions using the GLM Coding Plan API endpoint.