The only tool that tests your APIs, your UI, and your database
Performance, security, accessibility, and automation — all in one place, powered by AI, with zero cloud required.
No account required · Local-first · Windows / macOS / Linux
Rostymanv0.1.0-beta.15THE DIFFERENTIATOR
One tool. Three testing dimensions.
Most tools test one thing. Rostyman tests everything.
API Testing
HTTP, GraphQL, gRPC, WebSocket, MQTT, SSE, and MCP. Every protocol your stack uses, with auth, scripts, history, and collections.
Database Client
Query any database without switching apps. NLP → SQL, ER diagrams, schema diff, and EXPLAIN plans for every dialect.
Browser Automation
Test your UI the way users actually use it. Performance profiling, accessibility auditing, visual regression, and AI-powered test generation.
API TESTING
Every protocol. One window.
From simple REST calls to streaming WebSockets and AI agent tools via MCP — Rostyman handles every protocol your stack uses without switching apps.
- 8 protocols including MCP for AI agents
- Full auth suite (Bearer/OAuth2/API Key/AWS SigV4)
- Pre/post request scripts with rm.* API
- Import from your existing API client in 2 clicks
Rostymanv0.1.0-beta.15WORKFLOW
Automate complex API flows visually.
Build sophisticated API workflows with a drag-and-drop visual editor. Chain requests, add conditions, loops, transforms, and retry logic — without writing orchestration code.
- 10 node types including sub-workflows
- Retry with exponential backoff & status code filters
- Response assertions with 9 operators
- Full run history with step-by-step trace replay
Rostymanbeta.15AI ASSISTANT
AI that speaks your API's language.
Generate requests from plain English, explain response payloads, write pre-request scripts, and debug errors — all without leaving your workflow.
- OpenAI / Anthropic / Ollama (local, fully private)
- 10 requests/day included in the free tier
- BYO API key for unlimited usage
- Your requests never leave your machine with Ollama
Rostymanbeta.15This is a successful HTTP response (status 200) containing a list of 5 countries (Ivory Coast, Italy, Kyrgyzstan, Papua New Guinea, and Fiji) in JSON format. Each country object includes:
- Flags: URLs for PNG and SVG versions
- Name: Common, official, and native names
- Capital: The country's capital city
FILE SHARING
Share files on your LAN. No cloud involved.
Discover devices on your network automatically using mDNS, send files with TLS 1.3 encryption, and coordinate with your team — all without a server or cloud account.
- Zero-config device discovery via mDNS/Bonjour
- TLS 1.3 end-to-end encrypted transfers
- Emoji reactions + delivery read receipts
- Offline message queuing with automatic retry
Rostymanbeta.15DATABASES
Query any database without switching apps.
A full database client, built into your API tool. Write SQL, run NLP queries in plain English, visualize your schema, and diff migrations — all alongside your API requests.
- NLP → SQL: "show me orders from last week"
- Visual ER diagrams auto-generated from foreign keys
- Schema diff with migration SQL generation
- EXPLAIN plans per dialect (Postgres/MySQL/SQLite/MongoDB)
Rostymanbeta.15BROWSER AUTOMATION
Test your UI the way users actually use it.
An embedded browser test runner with real Chromium, performance profiling, WCAG audits, visual regression, and AI test generation — no Playwright config files required.
- Performance profiling (Core Web Vitals + waterfall)
- Accessibility audits (WCAG 2.1) mid-test
- Visual regression testing (element + full-page)
- AI-powered test generation from plain English
Rostymanbeta.15Built different, by design
Every protocol, every feature, every byte — on your machine.
Every protocol, free
HTTP, GraphQL, gRPC, WebSocket, Socket.IO, MQTT, SSE, and MCP — all included. No paywalls, no plan tiers, no surprises.
Your data stays on your machine
Zero telemetry on your requests, zero cloud sync, zero account required. Your collections never leave your laptop unless you say so.
API + DB + UI — one tool
API testing, a database client, and a browser test runner in a single app — no switching tools mid-workflow, no piecing together the picture across five windows.
ALSO INCLUDED
Everything else we ship in the box
Features most teams discover a month in. They're the reason people stay.
Mock Server
Local HTTP mocks from any collection.
Scheduler
Cron jobs, on your machine.
Runner & CLI
Batch runs, CI-ready, free.
MCP Server
13 tools for AI agents.
Code Generation
17 languages, one click.
Request History
Full replay of every run.
Vault
Encrypted secrets, never synced.
Certificates & mTLS
Zero-trust, built in.
Connected Storage
Git, URL, Drive, Dropbox.
Screen Capture
Screenshots + video recording.
Themes & Languages
20 themes, 18 languages.
Plugins
Custom import & export formats.
Simple, honest pricing
Powerful enough for enterprises. Free enough for everyone.
Free
Everything local, forever.
- ✓ All protocols (HTTP, GraphQL, gRPC, WS, MQTT, SSE, MCP)
- ✓ Workflow editor + visual automation
- ✓ AI assistant (10 requests/day)
- ✓ File sharing (LAN)
- ✓ 18 languages
- ✓ All local features, forever
Pro
Cloud features + unlimited AI.
- ✓ Everything in Free
- ✓ Cloud monitoring & uptime alerts
- ✓ Unlimited AI requests
- ✓ Load testing
- ✓ MCP + Hooks automation
- ✓ Priority support
Team
Collaborate at scale.
- ✓ Everything in Pro
- ✓ Shared workspaces
- ✓ Role-based access control
- ✓ Forking & pull requests
- ✓ Real-time collaboration
- ✓ Team analytics
Need SSO, audit logs, or on-premise? Talk to us about Enterprise →