# ACP

Category: Commerce

## Goal
Serve /.well-known/acp.json at the origin root with `protocol.name` set to `"acp"`, the `protocol.version`, `api_base_url`, supported transports, and `capabilities.services`. Agents can then discover your ACP implementation without first creating a checkout session.

## Validation
- Use public machine-readable artifacts where the standard expects them.
- Confirm content types, payload shape, and discoverability from the public web surface.
- Keep the implementation read-only from the scanner perspective.

## Copyable Fix Prompt
```text
Fix the ACP gap for https://example.com.

Requirements:
- Serve /.well-known/acp.json at the origin root with `protocol.name` set to `"acp"`, the `protocol.version`, `api_base_url`, supported transports, and `capabilities.services`. Agents can then discover your ACP implementation without first creating a checkout session.
- Preserve existing product behavior and do not do UI work.
- Use machine-readable public artifacts under /.well-known/ or response headers when appropriate.
- Add or update automated tests covering the new behavior.
- Validate the final response shape and content types.
```