Open data on whether AI shopping agents can reach checkout at specific online stores.
ARC API is a free Shopping API that requires no API key, is served over HTTPS and supports CORS, so it can be called from the browser.
Free developer tools for agentic commerce: a UCP profile validator, the arc-check CLI and CI step for UCP and WebMCP, a no-key REST API with OpenAPI, and an MCP server for Claude, Cursor and ChatGPT.
Details from arcreport.ai.

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Real-time product catalog API for AI agents across merchants in 7 countries (SG, MY, TH, VN, PH, ID, US)
The ARC API is provided by ARC (arcreport.ai). Free developer tools for agentic commerce: a UCP profile validator, the arc-check CLI and CI step for UCP and WebMCP, a no-key REST API with OpenAPI, and an MCP server for Claude, Cursor and ChatGPT.
Yes. The ARC API is listed in the Shopping category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
No. The ARC API requires no authentication, so you can start making requests without signing up.
Yes. The ARC API supports CORS, so front-end JavaScript can call it directly.
Yes. The ARC API is served over HTTPS, so it's safe to use in production.