[DOCS] Missing documentation for `settings` parameter in GitHub Actions configuration

Documentation Type

Missing documentation (feature not documented)

Documentation Location

https://code.claude.com/docs/en/github-actions

Section/Topic

The "Action parameters" table and the "Upgrading from Beta" section.

Current Documentation

In the Breaking Changes Reference table under "Upgrading from Beta", it states:

claude_env | settings JSON format

However, in the Action parameters table later in the document, the list of available parameters is:

prompt, claude_args, anthropic_api_key, github_token, trigger_phrase, use_bedrock, use_vertex

The settings parameter is missing from this reference list.

What's Wrong or Missing?

The migration guide instructs users to replace the old claude_env input with a settings input that accepts JSON format. However, the documentation fails to:

1. List settings as a valid input in the "Action parameters" reference table.
2. Provide an example of how to format the JSON string within the YAML workflow file (e.g., how to handle quoting or multiline JSON).

Users upgrading from the beta version are told to use a parameter that appears to be undocumented in the main configuration section.

Suggested Improvement

1. Add settings to the Action parameters table:

| Parameter | Description | Required |
| :--- | :--- | :--- |
| settings | JSON string configuration (replaces claude_env) | No |

1. Add a code example showing how to pass settings, specifically how to format the JSON within the YAML syntax. For example:

- uses: anthropics/claude-code-action@v1
  with:
    anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
    settings: '{"env": {"MY_VAR": "value"}, "verbose": true}'

Impact

High - Prevents users from using a feature

Additional Context

This is critical for users migrating from the Beta version who relied on claude_env to set environment variables or specific configurations. Without documentation on the settings input, it is unclear how to port these configurations to v1.0.