Skip to main content
Most tools on IOTools.cloud are also an API endpoint and an MCP tool — 800+ of them. One key, one credit balance, both surfaces.

Quick start

First call in about two minutes

API reference

Every endpoint, with a live playground

Use it from an agent

Claude, Cursor, Windsurf — one config block

Credits

What a call costs

​
One call

​
Two things to know first

Using a tool in your browser is free and unlimited. Calling it from code costs credits. Every tool call over the API or MCP costs credits, including tools that cost nothing on the website — a per-plan minimum, or the tool’s own weight if that is higher. Reading the catalog costs nothing. See Credits. Not every tool has an API. 800+ tools on the site do. The rest run entirely in your browser — camera capture, some PDF and image editing — and have no server-side equivalent to call. Calling one returns tool_not_allowed; see Errors.

​
What you get

800+ endpoints

Formatters, converters, generators, calculators, encoders — the same code that runs on the site.

One schema everywhere

The OpenAPI document, the MCP inputSchema and the runtime validator come from one source, so they cannot disagree.

Failed calls are free

Credits are charged on entry and refunded on any 4xx or 5xx.

RFC 9457 errors

Every failure is a problem document with a stable code to branch on.