Use your MCP request to interact with an MCP server

You interact with Model Context Protocol (MCP) servers with three kinds of capabilities: tools, resources, and prompts.

Tools are actions the server can perform for an AI model. For example, the Postman MCP server can create a collection for you.

Resources are data the server can retrieve. For example, another MCP server can return a user's information, such as their name and email.

Prompts are templates. For example, another MCP server can return some useful prompts, such as "Can you update my email address?" or "Can you show me my user information?".

As you interact with an MCP server, the server returns a response. You can use these responses to experiment, test, and evaluate an MCP server.

Interact with the MCP server

To interact with the MCP server, do the following:

1. Choose an existing MCP request or create a new one.

2. Click Load Methods. If prompted, review the consent prompt and grant Postman access to your computer. Postman connects to the server and displays the server's methods.

3. List the server's methods:

   • To list the tools methods, open the Tools tab.
   • To list the prompts methods, open the Prompts tab.
   • To list the resources methods, open the Resources tab.

   You can also Search for a method.

4. Choose a method and define its arguments. Postman creates a JSON Message for you.

5. Click Run.

Postman returns your response in the Response tab. Postman also returns notifications in the Notifications tab. To see a message's details, click the message. Each message includes a type and timestamp.

In addition, you can Search, filter by type, and Clear Messages. For each message, you can Search the message and Unwrap Lines or Wrap Lines.

You can also see whether you're Connected or Disconnected. To disconnect from the server, click Disconnect next to Run. To reconnect, click Connect.