The team's API client

Build, test and share APIs together. PostBruno opens your Postman collections as they are, keeps your team's workspaces in sync, and lets Claude or ChatGPT work in them with you.

Download Connect Claude or ChatGPT

Version 0.2.4 · 3 November 2026 · macOS and Windows

Download

Pick your system. Sign in with your PostBruno account to see your team's workspaces; everything else works without an account.

Installers

macOS (Apple Silicon)macOS (Intel)Windows (64-bit)

Scripts tab matches Postman; connect Claude/ChatGPT to PostBruno (see Connected apps).

Which Mac do I have? Apple menu → About This Mac: "Chip Apple M…" is Apple Silicon, "Processor … Intel" is Intel.

First launch

macOS: open the .dmg and drag PostBruno to Applications. If macOS can't verify the developer, click Done, then System Settings → Privacy & Security → Open Anyway.
Windows: if SmartScreen says "Windows protected your PC", click More info → Run anyway.
Installing a new version over an old one keeps your data and sign-in. The app tells you when an update is available.

Use PostBruno from Claude or ChatGPT

Connect an AI assistant to PostBruno and it can read and edit your team's collections, send requests and run tests, as you and with your role in each workspace.

"Add a POST /orders request to the Orders collection""Run the Payments folder on Staging and tell me what failed""Set host in Staging to https://staging.example.com"

Connector addresshttps://postbruno.klevrx.com/mcp

Claude

Settings → Connectors → Add custom connector.
Name it PostBruno and paste the address.
Click Connect, sign in with your PostBruno account and click Allow.

On Team and Enterprise plans, an owner may need to add the connector first.

ChatGPT

Turn on developer mode: Settings → Apps & Connectors → Advanced.
Create a connector with the address and OAuth authentication.
Sign in with your PostBruno account and click Allow.

Claude Code

Run this, then /mcp in Claude Code and choose Authenticate:

claude mcp add --transport http --scope user postbruno https://postbruno.klevrx.com/mcp

Cursor and other apps

Apps without sign-in use an API key: in PostBruno, account menu → API Keys → generate one, then:

{
  "mcpServers": {
    "postbruno": {
      "url": "https://postbruno.klevrx.com/mcp",
      "headers": { "Authorization": "Bearer crr_..." }
    }
  }
}

What it can do

Browse workspaces, collections, requests and environments
Create and edit requests, folders, scripts and variables
Send requests and run collections, with test results
Create mock servers and monitors, and read monitor runs
Nothing can be deleted through it, and every change shows in the activity feed under your name

Good to know

Team workspaces only; your Local Workspace stays on your computer.
Requests are sent from the PostBruno server, so only public addresses work (not localhost or VPN-only hosts).
Runs use the shared values of environments, not your local current values or vault secrets.
See and disconnect connected apps in PostBruno: account menu → API Keys → Connected apps.

All tools, inputs and limits →

What's inside

Everything you use in Postman day to day, in an app your team runs itself.

Requests

HTTP with params, headers, every body type and 14 auth types including OAuth 2.0. GraphQL with schema introspection.

Other protocols

WebSocket, Socket.IO, MQTT, and gRPC from proto files or server reflection, with all four streaming modes.

Postman compatible

Import Postman collections, environments and globals, OpenAPI, Swagger, GraphQL schemas, HAR and cURL. Export back to Postman.

Scripts and tests

Before request and After response scripts with pm.* and snippets, inherited from folders and collections.

Runner and performance

Collection Runner with data files and iterations; performance tests with ramp-up, spike and peak load.

Mocks and monitors

Mock servers that answer with saved examples, and monitors that run collections on a schedule.

Team workspaces

Shared collections and environments with Admin, Editor and Viewer roles, live sync, and an activity feed.

Familiar

Postman's layout and keyboard shortcuts, a command palette, Find and Replace, and seven themes.