Claude code action is not initializing

[Amansaxena001]

Describe the bug
Claude code action is not getting initialized but earlier it was ( 27th Nov , 2025 )

To Reproduce
Steps to reproduce the behavior:

         uses: anthropics/claude-code-base-action@main
         prompt: ""
          anthropic_api_key: dummy
          settings: |
            {
              "env": {
                "MAX_THINKING_TOKENS": 20000,
                "GH_TOKEN": "${{ steps.app-token.outputs.token }}",
                "GITHUB_REPOSITORY": "${{ github.repository }}",
                "BASH_DEFAULT_TIMEOUT_MS": 300000,
                "BASH_MAX_TIMEOUT_MS": 300000,
                "ANTHROPIC_BASE_URL": "https://api.portkey.ai",
                "ANTHROPIC_AUTH_TOKEN": "dummy",
                "ANTHROPIC_CUSTOM_HEADERS": "x-portkey-api-key: ${{ secrets.PORTKEY_API_KEY }}\nx-portkey-provider: key"
              }
            }
          show_full_output: true
          claude_args: |
            --model us.anthropic.claude-sonnet-4-5-20250929-v1:0
            --allowedTools mcp__sentry__*,mcp__sentry__get_sentry_issue,Read,View,Bash,Edit,Create,Write,str_replace_editor
            --mcp-config /tmp/mcp-config.json

Action output

Installation attempt 1...
Setting up Claude Code...
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✔ Claude Code successfully installed!

  Version: 2.1.9

  Location: ~/.local/bin/claude


  Next: Run claude --help to get started
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✅ Installation complete!

Claude Code installed successfully
Run # Change to CLAUDE_WORKING_DIR if set (for running in custom directories)
Setting up Claude settings at: /home/runner/.claude/settings.json
Creating .claude directory...
No existing settings file found, creating new one
Processing settings input...
Parsed settings input as JSON
Merged settings with input settings
Updated settings with enableAllProjectMcpServers: true
Settings saved successfully
No marketplaces specified, skipping marketplace setup
No plugins specified, skipping plugins installation
Using Agent SDK path (USE_AGENT_SDK=unset)
Running Claude with prompt from file: /tmp/claude-action/prompt.txt
SDK options: {
  "systemPrompt": {
    "type": "preset",
    "preset": "claude_code"
  },
  "pathToClaudeCodeExecutable": "",
  "extraArgs": {
    "model": "us.anthropic.claude-sonnet-4-5-20250929-v1:0",
    "mcp-config": "/tmp/mcp-config.json"
  },
  "settingSources": [
    "user",
    "project",
    "local"
  ]
}

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Workflow yml file
If it's not sensitive, consider including a paste of your full Claude workflow.yml file.

API Provider

[ ] Anthropic First-Party API (default)
[ ] AWS Bedrock
[ ] GCP Vertex

Additional context
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