
API Tool Calls: Home cost planners, page to Markdown, SEO checks and recalls.
API Tool Calls API is a free Development API that requires no API key, is served over HTTPS and does not support CORS, so it should be called from a server.
Connect AI agents to free tools through MCP and HTTP. Browse every tool, its arguments and examples, with 20 free calls a day per IP and no key needed.
Details from apitoolcalls.com.

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Geocode an address, validate an email, track a flight or pull stock data with one account, one dashboard and one API key.
The API Tool Calls API is provided by API Tool Calls (apitoolcalls.com). Connect AI agents to free tools through MCP and HTTP. Browse every tool, its arguments and examples, with 20 free calls a day per IP and no key needed.
Yes. The API Tool Calls API is listed in the Development 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 API Tool Calls API requires no authentication, so you can start making requests without signing up.
Not directly. The API Tool Calls API does not allow CORS, so call it from a server, serverless function or proxy instead of front-end JavaScript.
Yes. The API Tool Calls API is served over HTTPS, so it's safe to use in production.