PreMan helps developers test, host, and debug MCP servers and AI agent tools. Import a REST API, expose it as a hosted MCP server, issue scoped agent tokens, test tool calls, and inspect audit logs in one place. It is built for teams moving from normal APIs to APIs that Claude, ChatGPT, Cursor, and internal agents can safely call.

Mintlify — Knowledge infrastructure for AI agents

Knowledge infrastructure for AI agents

Hey Product Hunt, I’m Alspencer, building PreMan. The idea came from a problem we kept hitting while building with MCP and agent tools: traditional API testing does not fully answer whether an LLM can discover a tool, understand its schema, call it with the right arguments, handle auth, and produce a useful result. PreMan is a Postman-style workspace for MCP servers and AI agent APIs. Today it lets you: - turn REST APIs into hosted MCP servers - test MCP tools and regular API endpoints - issue scoped tokens for agents - inspect audit logs for tool calls - create API descriptions that are easier for LLMs to use We’re looking for teams building MCP servers, internal agents, or production tool-calling APIs. If this is something you’re wrestling with, I’d love blunt feedback and pilot users.

Also, I made the open-source sdk which I'd love you guys to contribute to, "leave a star, make my day"

https://github.com/Watcher1223/PreMan-Sdk.git

Mintlify — Knowledge infrastructure for AI agents

Knowledge infrastructure for AI agents

Also, I made the open-source sdk which I'd love you guys to contribute to, "leave a star, make my day"

https://github.com/Watcher1223/PreMan-Sdk.git

PreMan

Postman for MCP servers and AI agent tools

Postman for MCP servers and AI agent tools