Oastools, developed by Erraggy, is a specialized OpenAPI Specification (OAS) tool designed for the mcp platform. It integrates a built-in Model Context Protocol (MCP) server, enabling its capabilities to be exposed directly to Large Language Model (LLM) agents. Written primarily in Go, Oastools helps developers and AI systems manage and interact with OpenAPI definitions. This free tool offers various functions for working with API specifications, making it a valuable addition for projects requiring OAS manipulation and LLM agent integration.

What does Oastools connect to?

Oastools functions as an OpenAPI Specification tool that includes a built-in Model Context Protocol (MCP) server. This server is specifically engineered to expose Oastools' functions to Large Language Model (LLM) agents, allowing AI systems to interact with and manage OpenAPI definitions. While the general MCP specification outlines stdio and Streamable HTTP as standard transport protocols, Oastools' documentation does not explicitly detail which of these its built-in MCP server supports for agent communication. It is generally compatible with LLM agents for various interaction needs.

Core features and tools

Oastools provides several callable tools through its Command Line Interface (CLI), including validate, convert, diff, fix, join, and generate. An online version also lists overlay. Internally, the project includes components such as parser, validator, fixer, converter, joiner, differ, overlay, generator, builder, and walker. These tools allow users to perform various operations on OpenAPI specifications, from checking for errors and warnings to transforming formats, combining definitions, or generating code artifacts.

Who is it for?

Oastools targets developers and Large Language Model (LLM) agents who work with OpenAPI specifications. It is particularly useful for those needing to automate tasks related to API definition management and interaction with AI systems, such as ensuring specification correctness or generating client code. The tool supports workflows like validating specifications, converting between versions, and generating code. This is not the right fit if your project does not involve OpenAPI specifications or interaction with LLM agents.

How to get started

No credentials are required.

Use cases

• Validating an OpenAPI specification to check for errors and warnings.
• Converting OpenAPI specifications between different versions, for example, from OpenAPI 2.0 to 3.0.3.
• Generating client or server code from an OpenAPI specification.

Oastools by Erraggy is a free, Go-based OpenAPI Specification tool with an MCP server for LLM agents. It offers essential functions like validation, conversion, and code generation for API definitions. The tool is distributed via Homebrew, Go install, and pre-built binaries for multiple operating systems. Its "AI-Ready" design makes it suitable for automated API management tasks. Try validating an OpenAPI specification to check for errors and warnings.