Postmancer MCP server

Postmancer is a helper that lets your AI assistant talk to web APIs for you. Think of it as Postman or Insomnia, but built for your AI instead of a person clicking buttons. It is handy if you test or work with APIs and want to do it by just asking in plain words.

What this MCP server does

You ask your AI something like send a request to this web address and show me the answer. The AI passes that to Postmancer, which actually makes the web request. Postmancer can also save requests into collections so you can reuse them later. It can set variables, like a base web address or a token, and swap them into your requests. Then it hands the response back to your AI, which explains it to you.

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What you can do with it

• Send a web request to any API address
• Save a request into a collection for later
• Run a saved request from a collection
• List your collections and the requests inside them
• Set environment variables like a base URL or token
• View your saved environment variables
• Use different login methods like Basic, Bearer, API Key, or OAuth2

Try asking your AI

• “Send a GET request to https://api.example.com/users and show me the response”
• “Save this request as get all users in my work collection”
• “Run the get all users request from my work collection”
• “Set an environment variable called base_url to https://api.example.com”

What it gives back to you

You get the answer from the API back in the chat, usually as text or structured data your AI can read out. When you save or list things, you get a short confirmation or a list of names. When you run a saved request, you get the response plus a note that it came from that collection. Your AI then explains what it means in plain words.

Before you start

Who it's for

Developers, testers, and anyone who works with web APIs and wants to try requests without opening a separate tool.