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# APIs.io: 2 WebMCP tools for AI agents

![](https://www.google.com/s2/favicons?domain=apis.io&sz=96)

Developer tools · apis.io

## APIs.io

API search engine. Agents can search a federated API catalog by keyword, tag or provider.

[Open apis.io](https://apis.io/)

## Ask an agent to

-   Find APIs for sending SMS
-   Search payment APIs from Stripe
-   Describe the apis.io network and catalogs

## 2 tools

-   `describe_network`
    
    Describe the apis.io network: subdomains, machine-readable catalogs, and primary discovery endpoints. Use this before searching to understand the available scopes.
    
-   `search_apis`
    
    Search the apis.io federated catalog by keyword, tag, or provider. Returns ranked matches across providers, APIs, AsyncAPI specs, JSON-LD vocabularies, and rule sets. JSON Schemas are large and only included when…
    
    query: string, dimension: string?, limit: integer?
    

Tools

2

Registered with

JavaScript

Tranco rank

#198,120

Re-checked

Oct 24, 2026

Tool names and descriptions are what apis.io/ registered when we loaded it in Chrome 154 on Browser Use Cloud. The summary and the “ask an agent” lines are AI-written from them. To call the tools yourself, see [Chrome’s WebMCP docs](https://developer.chrome.com/docs/ai/webmcp). [How we found it](https://browser-use.com/webmcp#method).

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-   [![](https://www.google.com/s2/favicons?domain=corewebvitals.io&sz=64)Core Web Vitals Data Explorer3 tools · corewebvitals.io](https://browser-use.com/webmcp/corewebvitals.io)

[All 1,393 developer tools sites →](https://browser-use.com/webmcp/developer-tools)