What is API to Tools?

API to Tools is a universal library that automatically converts any API specification (OpenAPI, Swagger, GraphQL, WSDL, gRPC, Nexacro, etc.) into LLM-callable tool definitions, enabling seamless integration with AI agents.

What types of APIs can API to Tools convert?

It offers universal support for OpenAPI, Swagger, WSDL/SOAP, GraphQL, gRPC, AsyncAPI, Nexacro/SSV, and can discover APIs via JS bundle scanning and dynamic Playwright crawling.

Which LLM platforms does API to Tools support?

API to Tools generates compatible tool definitions for Anthropic Claude, OpenAI function calling, and MCP (Multi-Modal Communication Protocol) servers, ensuring broad AI agent compatibility.

How does API discovery work with API to Tools?

It uses a priority-ordered approach: direct spec URLs, Nexacro detection, well-known path probing, authenticated Swagger hunting, JS bundle scanning, and dynamic Playwright crawling, completing most discoveries rapidly.

Is it safe to use API to Tools on live production systems?

Yes, by default, `safe_mode=True` intercepts and fakes mutation requests (POST/PUT/DELETE/PATCH) during crawling. This prevents accidental damage to live systems while still allowing full API discovery.

API to Tools

Name: API to Tools
Author: SonAIengine

0•

Converts any API specification into LLM-callable tool definitions for seamless integration with AI agents.

API to Tools is a universal Python library designed to effortlessly transform diverse API formats, including OpenAPI, Swagger, WSDL/SOAP, GraphQL, gRPC, and even legacy systems like Nexacro/SSV, into standardized tool definitions consumable by large language models. By simply providing a URL, with or without authentication, the library automates the discovery process, eliminating manual wiring and significantly accelerating the development of LLM-powered applications. It supports direct integration with platforms like Claude and OpenAI, as well as MCP servers, making complex API interactions accessible for AI agents through a single, intuitive interface.

主な機能

01LLM-specific output: Generates tool definitions compatible with Anthropic Claude, OpenAI function calling, and MCP servers.

02Universal API support: OpenAPI, Swagger, WSDL/SOAP, GraphQL, gRPC, AsyncAPI, Nexacro/SSV, and JS bundle scanning.

03Automated API discovery: Probes well-known paths, authenticated backends, and dynamic SPAs via Playwright crawling.

04Comprehensive authentication: Supports Basic, Bearer, API Key, Form Login, OAuth2, and custom headers.

05Safe mode for crawling: Intercepts and fakes mutation requests to prevent accidental damage during discovery on live systems.

060 GitHub stars

ユースケース

01Rapidly create LLM-callable tools from public or private APIs without manual definition.

02Integrate legacy enterprise systems (e.g., Nexacro) with modern AI agents for automation.

03Develop AI agents capable of interacting with a wide range of web services using a unified tool interface.