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Overview

Postman is a popular API development and testing tool that allows you to send HTTP requests and receive responses. You can use Postman to interact with StackOne’s MCP server by making JSON-RPC 2.0 requests.
Postman is ideal for testing MCP endpoints, debugging requests, and exploring available tools before integrating into your application.

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Get the StackOne public Postman collection

The StackOne public Postman collection comes with a pre-configured MCP request:

Open in Postman

Fork this collection to get started
 The collection already includes:
  • MCP requests in the StackOne MCP folder
  • Basic Auth configured with {{apiKey}} as the username
  • x-account-id header set to {{accountID}}
  • URL pre-configured to https://api.stackone.com/mcp

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Setup

1

Create a Postman Environment

  1. Open Postman
  2. Click the Environments icon in the left sidebar
  3. Click + to create a new environment
  4. Name it “StackOne MCP” (or your preferred name)
2

Add Environment Variables

Add the following variables to your environment (these match the variable names used in the collection):
VariableInitial ValueCurrent Value
apiKeyyour-api-keyyour-api-key
accountIDyour-account-idyour-account-id
You can generate a new API key in the StackOne Dashboard. You can find your account ID in the StackOne Dashboard under your linked accounts.
3

Select Your Environment

In the top-right corner of Postman, select your “StackOne MCP” environment from the dropdown to activate it.
Example Postman environment

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Using the MCP Request

After forking the collection and setting up your environment variables, you’ll find a pre-configured MCP request in the StackOne MCP folder. The MCP protocol uses JSON-RPC 2.0 format.

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Send Your First Request

  1. Navigate to the StackOne MCP folder in your forked collection
  2. Select the Connect to StackOne MCP request
  3. Make sure your environment is selected in the top-right corner
  4. Under the Message tab, click “Load Capabilities”
  5. This will show all the available tools for the account you’ve connected to
  6. Select the tool you want to use, fill in any required fields, and click “Run”
You should receive a JSON response from the API with the results of request.
The next time you load the collection, it should automatically load the capabilities for the account you’ve connected to.
Postman MCP request showing a selected tool, request parameters, and JSON response

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Next Steps

MCP Quickstart

Learn more about StackOne MCP

Authentication Guide

Configure authentication and security

Troubleshooting

Resolve common issues

Framework Guides

Integrate MCP into your application