Rostyman

Full request builder with auth, headers, body, params, and scripting

Monaco editor, schema introspection, autocomplete, variables

Proto import, unary + streaming, auth, scripts

Connect, send/receive messages, real-time message log

Emit events, auto-capture, auth/query config

Publish/subscribe, QoS 0/1/2, retain flag, topic management

Server-Sent Events with real-time event log

Model Context Protocol — expose collections to AI agents like Claude and Cursor

100% Local — No Account Required

Rostyman runs entirely on your machine. No sign-up, no cloud sync, no telemetry. Your data stays on your device in a local SQLite database.

8 Protocols in One App

HTTP, GraphQL, gRPC, WebSocket, Socket.IO, MQTT, SSE, and MCP — all built in. No switching between tools or installing extensions.

AI Assistant

Multi-turn conversational AI with 3 providers (Claude, OpenAI, Ollama). Generate requests, explain responses, write tests, fix errors, validate schemas.

All Auth Types

Bearer, Basic, API Key, OAuth 2.0 (all flows), OAuth 1.0, Digest, NTLM, Hawk, AWS Signature v4. Auth inheritance from folders and collections.

Scripting with rm.*

Run JavaScript before and after every request. Scripts inherit through collections and folders. Write assertions, chain requests, set variables with the rm.* scripting API.

Import From Anywhere

Import collections from 10+ formats including OpenAPI, Insomnia, cURL, HAR, Thunder Client, Hoppscotch, and Bruno. Export in multiple formats.

Visual Workflow Editor

Build multi-step API workflows with a drag-and-drop canvas. Flow Tracer shows live execution. Scheduler runs workflows on a cron schedule.

Git-Native Version Control

Built-in Git panel with commit, push, pull, branch, diff viewer, and merge conflict resolution. Version control your collections without leaving the app.

Video Recording with Audio

Record the app with microphone audio for demos and tutorials. Configure resolution, frame rate, quality, and mic device. Mute/unmute during recording.

Request History

Full request + response saved for every run. Schema change detection alerts when response structure changes. Click any history entry to restore.

20 Built-in Themes

Dark and light themes including Dracula, Nord, Tokyo Night, Solarized, GitHub, One Dark, and more. Custom theme builder with 70+ CSS variables.

Mock Server & Collection Runner

Simulate APIs locally with the mock server (LAN accessible). Run collections with iterations, data files, and delay between requests.