Postman CLI for AI Agents

CLIs are eating MCPs. The industry is converging on the very same idea. MCPs for all their merit can be token hungry, slow, and unreliable for complex tool chaining. However, coding agents have become incredibly good at working with CLIs, and in fact they are far more comfortable working with CLI tools than MCP. With Composio's Universal CLI, your coding agents can talk to over 1000+ SaaS applications. With Postman, agents can run the 'get users' request in postman, list all collections in your postman workspace, create a new environment variable in postman, and more — all without worrying about authentication. This guide walks you through Composio Universal CLI and explains how you can connect it with coding agents like Claude Code, Codex, OpenCode, etc, for end-to-end Postman automation.

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Introduction

With Composio's Universal CLI, your coding agents can talk to over 1000+ SaaS applications. With Postman, agents can run the 'get users' request in postman, list all collections in your postman workspace, create a new environment variable in postman, and more — all without worrying about authentication.

This guide walks you through Composio Universal CLI and explains how you can connect it with coding agents like Claude Code, Codex, OpenCode, etc, for end-to-end Postman automation.

Also integrate Postman with

ChatGPT OpenAI Agents SDK Claude Agent SDK Claude Code Claude Cowork Codex OpenCode Cursor VS Code OpenClaw Hermes Google ADK LangChain Vercel AI SDK Mastra AI LlamaIndex CrewAI

What is Universal CLI and why use it?

The idea behind building the universal CLI is to give agents a single command interface to interact with all your external applications. Here's what you'll get with it:

Agent-friendly: Coding agents like Claude Code, Codex, and OpenCode can use CLI tools natively — no MCP setup required.
Authentication handled: Connect once via OAuth or API Key, and all CLI commands work with your credentials automatically.
Tool discovery: Search, inspect, and execute 20,000+ tools across 1000+ apps from one interface.
Trigger support: Use triggers to listen for events across your apps, powered by real-time webhooks or polling under the hood.
Type generation: Generate typed schemas for autocomplete and type safety in your projects.

Prerequisites

Install the Composio CLI, authenticate, and initialize your project:

bash

# Install the Composio CLI
curl -fsSL https://composio.dev/install | bash

# Authenticate with Composio
composio login

During login you'll be redirected to sign in page, finish the complete flow and you're all set.

Connecting Postman to Coding Agents via Universal CLI

Once it is installed, it's essentially done. Claude Code, Codex, OpenCode, OpenClaw, or any other agent will be able to access the CLI. A few steps to give agents access to your apps.

Launch your Coding Agent — Claude Code, Codex, OpenCode, anything you prefer.
Prompt it to "Authenticate with Postman"
Complete the authentication and authorization flow and your Postman integration is all set.
Start asking anything you want.

Universal CLI Commands for Postman

You can also manually execute CLI commands to interact with your Postman.

Connect your Postman account

Link your Postman account and verify the connection:

bash

# Connect your Postman account (opens OAuth flow)
composio connected-accounts link postman

# Verify the connection
composio connected-accounts list --toolkits postman

Discover Postman tools

Search and inspect available Postman tools:

bash

# List all available Postman tools
composio tools list --toolkit postman

# Search for Postman tools by action
composio tools search "postman"

# Inspect a tool's input schema
composio tools info POSTMAN_CREATE_A_COLLECTION

Common Postman Actions

Create a Collection — Tool to create a new Postman collection in a specific workspace or the default workspace

bash

composio tools execute POSTMAN_CREATE_A_COLLECTION \
  --collection "<object>"

Create a Collection Comment — Tool to create a comment on an API's collection

bash

composio tools execute POSTMAN_CREATE_A_COLLECTION_COMMENT \
  --body "This is a test comment on the API collection" \
  --api_id "4e01b242-d5c6-4bbe-90db-a550f2e723b4" \
  --collection_id "50304422-bc02b91a-1475-44ef-863f-ea795073bc41"

Create Collection from Schema — Tool to create a collection from a schema and link it to an API with specified relations

bash

composio tools execute POSTMAN_CREATE_A_COLLECTION_FROM_A_SCHEMA \
  --name "Test Collection from Schema" \
  --api_id "4e01b242-d5c6-4bbe-90db-a550f2e723b4" \
  --schema_id "7a871867-f009-4aba-81c2-eaeea10c655b" \
  --api_version_id "a14d837d-6588-46cc-8079-98a705f0160c"

Create a Folder — Tool to create a folder in a Postman collection

bash

composio tools execute POSTMAN_CREATE_A_FOLDER \
  --name "Test Folder" \
  --collection_id "8a98fd90-d917-45b4-b856-14e67fb96d95"

Generate Type Definitions

Generate typed schemas for Postman tools to get autocomplete and type safety in your project:

bash

# Auto-detect language
composio generate --toolkits postman

# TypeScript
composio ts generate --toolkits postman

# Python
composio py generate --toolkits postman

Tips & Tricks

Always inspect a tool's input schema before executing: composio tools info <TOOL_NAME>
Pipe output with jq for better readability: composio tools execute TOOL_NAME -d '{}' | jq
Set COMPOSIO_API_KEY as an environment variable for CI/CD pipelines
Use composio dev logs tools to inspect execution logs and debug issues

Next Steps

Try asking your coding agent to perform various Postman operations
Explore cross-app workflows by connecting more toolkits
Set up triggers for real-time automation
Use composio generate for typed schemas in your projects

TOOLS

Supported Tools

Every Postman action and event your agent gets out of the box.

Create a Collection

Tool to create a new Postman collection in a specific workspace or the default workspace.

Create a Collection Comment

Tool to create a comment on an API's collection.

Create Collection from Schema

Tool to create a collection from a schema and link it to an API with specified relations.

Create a Folder

Tool to create a folder in a Postman collection.

Create a Folder Comment

Tool to create a comment on a folder.

Create a Fork

Tool to create a fork from an existing collection into a workspace.

Create Environment Fork

Tool to create a fork from an existing environment into a workspace.

Create a Mock Server

Tool to create a new mock server in a Postman collection.

Create a Monitor

Tool to create a new monitor in a specific workspace to run a collection on a schedule.

Create an API

Tool to create a new API in Postman.

Create an API

Tool to create a new API in a Postman workspace.

Create an Environment

Tool to create a new environment in a Postman workspace.

Create a Pull Request

Tool to create a pull request for a forked collection into its parent collection.

Create Request in Collection

Tool to create a new request in a Postman collection.

Create a Request Comment

Tool to create a comment on a request.

Create a Response

Tool to create a request response in a Postman collection.

Create a Response Comment

Tool to create a comment on a response.

Create API Schema

Tool to create a schema for an API in Postman.

Create Mock Server Response

Tool to create a server response on a Postman mock server.

Create a Spec

Tool to create an API specification in Postman's Spec Hub.

Create Spec File

Tool to create a new file in an API specification.

Create a Webhook

Tool to create a webhook that triggers a collection with a custom payload.

Create a Workspace

Tool to create a new workspace in Postman.

Create Collection

Tool to create a new Postman collection with specified name and configuration.

Create Environment

Tool to create a new Postman environment with specified name and variables.

Create Mock Server

Tool to create a new mock server for a Postman collection.

Create Monitor

Tool to create a new monitor to run a collection on a schedule.

Create or Update a Schema File

Tool to create or update an API schema file in Postman.

Create API Version Relations

Tool to create new relations for an API version.

Create Webhook

Tool to create a new webhook for a Postman collection.

Delete a Collection

Tool to permanently delete a collection from Postman.

Delete a collection's comment

Tool to delete a comment from an API's collection.

Delete a Folder

Tool to delete a folder in a Postman collection.

Delete a Folder's Comment

Tool to delete a comment from a folder.

Delete an API

Tool to delete an API from Postman.

Delete an API's Comment

Tool to delete a comment from an API.

Delete an environment

Tool to delete an environment permanently in Postman.

Delete a Request's Comment

Tool to delete a comment from a request.

Delete a Response

Tool to delete a response in a Postman collection.

Delete a Response's Comment

Tool to delete a comment from a response.

Delete a Schema File

Tool to delete a file in an API schema.

Delete Mock Server Response

Tool to delete a mock server's server response.

Delete a Spec

Tool to delete an API specification from Postman.

Delete Spec File

Tool to delete a file from an API specification.

Delete a Workspace

Tool to delete a Postman workspace permanently.

Delete Monitor

Tool to delete a monitor by its ID.

Duplicate a Collection

Tool to create a duplicate of a collection in another workspace.

Fork Collection

Tool to create a fork of a collection in a specified workspace.

Generate Collection from Spec

Tool to generate a Postman collection from an OpenAPI 2.

Generate Spec from Collection

Tool to generate an API specification from a Postman collection.

Get Billing Account Details

Tool to retrieve Postman billing account details for the authenticated team.

Get Collection Comments

Tool to retrieve all comments left by users in an API's collection.

Get Collection's Forks

Tool to get all forks of a specific collection.

Get Collection Pull Requests

Tool to get information about a collection's pull requests including source and destination IDs, status, and URLs.

Get Collection Roles

Tool to get information about all roles in a collection.

Get Folder Information

Tool to retrieve information about a folder in a Postman collection.

Get Folder Comments

Tool to retrieve all comments left by users in a folder.

Get All API Releases

Tool to get all releases for a specific API version in Postman.

Get All APIs

Tool to get all APIs accessible to the authenticated user with optional workspace filtering.

Get All APIs in Workspace

Tool to get all APIs in a specific Postman workspace.

Get All Collections

Tool to get all collections accessible to the authenticated user with optional workspace filtering.

Get All Collections

Tool to get all collections accessible to the authenticated user.

Get All Environments

Tool to get all environments accessible to the authenticated user with optional workspace filtering.

Get All Forked Collections

Tool to retrieve all forked collections for the authenticated user.

Get All Groups

Tool to get all user groups in a Postman team.

Get All Linked Relations

Tool to retrieve all linked relations for a specific API version in Postman.

Get All Mock Servers

Tool to get all active mock servers accessible to the authenticated user.

Get All Monitors

Tool to get all monitors accessible to the authenticated user with optional workspace filtering.

Get All Workspace Roles

Tool to get information about all roles in a workspace based on the team's plan.

Get All API Specifications

Tool to get all API specifications in a workspace.

Get All Team Users

Tool to get information about all users on the Postman team.

Get All Test Relations

Tool to retrieve all test relations for a specific API version.

Get All API Versions

Tool to get all published versions of a specific API in Postman.

Get All Workspaces

Tool to get all workspaces accessible to the authenticated user with optional type filtering.

Get Monitor Information

Tool to retrieve information about a specific monitor in Postman.

Get API Information

Tool to retrieve information about a specific API in Postman.

Get API Comments

Tool to retrieve all comments left by users in an API.

Get API Version

Tool to get information about a specific API version in Postman.

Get an Environment

Tool to retrieve detailed information about a specific environment in Postman.

Get Environment Forks

Tool to retrieve all forked environments for a specific environment.

Get Request Information

Tool to retrieve information about a specific request in a Postman collection.

Get Request Comments

Tool to retrieve all comments left by users in a request.

Get Response Information

Tool to retrieve information about a saved response in a Postman collection.

Get Response Comments

Tool to retrieve all comments left by users in a response.

Get API Schema

Tool to retrieve information about an API schema from Postman.

Get API Specification

Tool to retrieve information about an API specification in Postman.

Get Spec File Contents

Tool to get the contents of an API specification's file.

Get Spec Definition

Tool to get the complete contents of an API specification's definition.

Get Specification Files

Tool to retrieve all files in an API specification from Postman.

Get Spec's Generated Collections

Tool to retrieve all collections generated from an API specification in Postman.

Get Async Collection Update Status

Tool to get the status of an asynchronous collection update task.

Get Team User

Tool to get information about a user on the Postman team.

Get Authenticated User

Tool to get information about the authenticated user.

Get Workspace Details

Tool to get detailed information about a specific workspace by its ID.

Get Workspace Activity Feed

Tool to get a workspace's activity feed showing who added or removed collections, environments, or elements, and users joining or leaving.

Get Workspace Roles

Tool to get the roles of users, user groups, and partners in a workspace.

Get Collection Access Keys

Tool to retrieve all personal and team collection access keys for the authenticated user.

Get Contract Test Relations

Tool to retrieve contract test relations for a specific API version.

Get documentation relations

Tool to get documentation relations for a specific API version.

Get Duplication Task Status

Tool to get the status of a collection duplication task.

Get Environment Relations

Tool to get environment relations for a specific API version.

Get Generated Specification

Tool to retrieve the API specification generated for a Postman collection.

Get Workspace Global Variables

Tool to get a workspace's global variables.

Get Integration Test Relations

Tool to get integration test relations for a specific API version.

Get Resource Types

Tool to get all resource types supported by Postman's SCIM API.

Get Schema File Contents

Tool to get the contents of an API schema file at a specified path.

Get Schema Files

Tool to retrieve files in an API schema from Postman.

Get Service Provider Configuration

Tool to get Postman's SCIM API service provider configuration information.

Get Source Collection Status

Tool to check whether there is a change between a forked collection and its parent (source) collection.

Get Test Suite Relations

Tool to get test suite relations for a specific API version.

Get Unclassified Relations

Tool to get unclassified relations for an API version in Postman.

Import OpenAPI Definition

Tool to import an OpenAPI definition into Postman as a new collection.

Import OpenAPI Specification

Tool to import an OpenAPI specification into Postman as a new collection.

List Account Invoices

Tool to get all invoices for a Postman billing account filtered by status.

Merge a Fork

Tool to merge a forked collection back into its parent collection.

Merge a forked environment

Tool to merge a forked environment back into its parent environment.

Publish a Mock Server

Tool to publish a mock server in Postman.

Pull Source Changes into Fork

Tool to pull changes from a parent (source) collection into a forked collection.

Replace an Environment's Data

Tool to completely replace an environment's data with new variables and values.

Replace Collection Data Asynchronously

Tool to replace the entire contents of a collection asynchronously.

Resolve a Comment Thread

Tool to resolve a comment thread and any associated replies.

Review a Pull Request

Tool to update the review status of a pull request by approving, declining, or unapproving it.

Run a Monitor

Tool to trigger an immediate run of a monitor and retrieve its execution results.

Sync Collection with API Schema

Tool to sync a collection attached to an API with the API schema.

Sync Collection with Specification

Tool to sync a collection generated from an API specification.

Sync Spec with Collection

Tool to sync an API specification with a linked collection.

Transfer Folders

Tool to copy or move folders into a collection or folder.

Transform Collection to OpenAPI

Tool to transform an existing Postman Collection into a stringified OpenAPI 3.

Update a Folder

Tool to update a folder in a Postman collection.

Update a Folder's Comment

Tool to update a comment on a folder.

Update a Mock Server

Tool to update an existing mock server.

Update a Monitor

Tool to update an existing monitor in Postman.

Update an API

Tool to update an existing API in Postman.

Update an API's Comment

Tool to update a comment on an API.

Update an Environment

Tool to update specific environment properties using JSON Patch operations (RFC 6902).

Update a Pull Request

Tool to update an open pull request in Postman.

Update Request in Collection

Tool to update a request in a Postman collection.

Update a Request's Comment

Tool to update a comment on a request.

Update a Response

Tool to update a response in a Postman collection.

Update a Response's Comment

Tool to update a comment on a response.

Update a Server Response

Tool to update a mock server's server response.

Update Spec File

Tool to update an API specification file's content.

Update Spec Properties

Tool to update an API specification's properties such as its name.

Update a Workspace

Tool to update an existing workspace in Postman.

Update Workspace Global Variables

Tool to update and replace a workspace's global variables.

Update Collection Properties

Tool to update specific collection properties like name, description, authentication, variables, or events.

FRAMEWORKS

How to build Postman MCP Agent with another framework

ChatGPT

Use Postman MCP with ChatGPT

OpenAI Agents SDK

Use Postman MCP with OpenAI Agents SDK

Claude Agent SDK

Use Postman MCP with Claude Agent SDK

Claude Code

Use Postman MCP with Claude Code

Claude Cowork

Use Postman MCP with Claude Cowork

Codex

Use Postman MCP with Codex

Cursor

Use Postman MCP with Cursor

OpenClaw

Use Postman MCP with OpenClaw

Hermes

Use Postman MCP with Hermes

Google ADK

Use Postman MCP with Google ADK

LangChain

Use Postman MCP with LangChain

Vercel AI SDK

Use Postman MCP with Vercel AI SDK

Mastra AI

Use Postman MCP with Mastra AI

LlamaIndex

Use Postman MCP with LlamaIndex

CrewAI

Use Postman MCP with CrewAI

OpenCode

Use Postman MCP with OpenCode

VS Code

Use Postman MCP with VS Code

MORE TOOLKITS

Explore Other Toolkits

Toolkit marketplace

Google Sheets

Oauth2

Google Sheets is a cloud-based spreadsheet tool for real-time collaboration and data analysis. It lets teams work together from anywhere, updating information instantly.

Supabase

Oauth2Api Key

Supabase is an open-source backend platform offering scalable Postgres databases, authentication, storage, and real-time APIs. It lets developers build modern apps without managing infrastructure.

Notion

Oauth2Api Key

Notion is a collaborative workspace for notes, docs, wikis, and tasks. It streamlines team knowledge, project tracking, and workflow customization in one place.

Airtable

Oauth2Api Key

Airtable combines the flexibility of spreadsheets with the power of a database for easy project and data management. Teams use Airtable to organize, track, and collaborate with custom views and automations.

FAQ

Frequently asked questions

The Composio Universal CLI is a single command-line interface that lets coding agents and developers interact with 1000+ SaaS applications. It handles authentication, tool discovery, action execution, and trigger setup — all from the terminal, without needing to configure MCP servers.

Any coding agent that can run shell commands works with the Composio CLI — including Claude Code, Codex, OpenCode, OpenClaw, and others. Once the CLI is installed, agents automatically discover and use the composio commands to interact with Postman and other connected apps.

MCP servers require configuration and can be token-heavy for complex workflows. The CLI gives agents a direct, lightweight interface — no server setup needed. Agents simply call composio commands like any other shell tool. It's faster to set up, more reliable for multi-step tool chaining, and works natively with how coding agents already operate.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Postman data and credentials are handled as safely as possible. You can also bring your own OAuth credentials for full control.

Start with Postman.It takes 30 seconds.

Managed auth, hosted MCP servers, and every Postman tool your agent needs.Free to start.

Start building

Customer stories

Teams ship real agents on Composio

GET STARTED FOR FREE BOOK A DEMO

Karan skipped his own birthday party to fix our critical issue. It was 10pm and he diverted his Waymo to help us instead. This really sets the bar — it shows the commitment you need when users rely on your software.

Harsha Gaddipati

Co-founder, Slashy

A lot of students tell us that the moment their connected tools start talking to each other inside Opennote feels almost magical. The agent just knows them, and it's immensely helped keep new users on the platform.

Abhi Arya

Co-founder, Opennote

We chose Composio over Pipedream because it delivered depth where it mattered — niche tools and tricky edge cases other platforms simply ignored. That gave us confidence to scale without compromising.

Nirman Dave

CEO, Zams

As a solo builder, shipping fast is life or death. The only way I can outcompete incumbents is by outmanoeuvring them. Getting bogged down managing agent auth would have been a death sentence.

Ryan Yu

Founder, Extra Thursday

Before Composio, adding tool integrations was slow and resource-intensive. Each one could take weeks of engineering time, and maintaining them meant constantly keeping up with API changes.

Tomisin Jenrola

Founder & CEO, SwarmZero

With hands-on help from their founder, we integrated Gmail and Google Drive in just 30 minutes. This level of personal support and commitment is exactly what startups should strive for.

Jerome Leclanche

Co-Founder, Ingram Technologies

Postman CLI for AI Agents

Connect Postman without auth hassles

Introduction

Also integrate Postman with

What is Universal CLI and why use it?

Prerequisites

Connecting Postman to Coding Agents via Universal CLI

Universal CLI Commands for Postman

Connect your Postman account

Discover Postman tools

Common Postman Actions

Create a Collection — Tool to create a new Postman collection in a specific workspace or the default workspace

Create a Collection Comment — Tool to create a comment on an API's collection

Create Collection from Schema — Tool to create a collection from a schema and link it to an API with specified relations

Create a Folder — Tool to create a folder in a Postman collection

Generate Type Definitions

Tips & Tricks

Next Steps

Supported Tools

How to build Postman MCP Agent with another framework

ChatGPT

OpenAI Agents SDK

Claude Agent SDK

Claude Code

Claude Cowork

Codex

Cursor

OpenClaw

Hermes

Google ADK

LangChain

Vercel AI SDK

Mastra AI

LlamaIndex

CrewAI

OpenCode

VS Code

Explore Other Toolkits

Google Sheets

Supabase

Notion

Airtable

Frequently asked questions

What is the Composio Universal CLI?+

Which coding agents work with the Composio CLI?+

How is the CLI different from using an MCP server for Postman?+

How safe is my Postman data when using the Composio CLI?+

Start with Postman.It takes 30 seconds.

Teams ship real agents on Composio