Workspaces are files
A workspace is a folder of readable YAML: requests, folders, environments, servers and load tests. Keep it in Git and review it in pull requests.
Zorvik documentation
Zorvik is an open-source desktop app to build, test, mock and load test APIs, test and mock the MCP servers AI agents use, and see what really happens on the network. It runs on Windows, macOS and Linux, and every download also has the zorvik command line for CI.
These pages explain every feature in detail. New to APIs? The Training Bootcamp inside the app teaches you hands-on.
MCP: test AI toolsCall and test MCP servers over HTTP or stdio, and mock MCP servers for AI apps and agents.
Install ZorvikWindows, macOS and Linux, and the zorvik command line.
Your first requestSend, save and organize requests in a workspace.
Scripts & testsPre-request and post-response JavaScript, the full pm API.
Mock serversRoutes, templates, delays, faults, CORS and forwarding.
Load testingVirtual users or arrival rate, stages, thresholds and reports.
Command linezorvik run, load, serve and mcp for pipelines and agents.
How Zorvik is organized
Section titled “How Zorvik is organized”Secrets stay local
Secret values, cookies and OAuth tokens live in the app’s data folder, never in the workspace files.
One engine
The app, the command line and AI agents all use the same Rust engine, so a request behaves the same everywhere.
Local first
No account, no cloud sync, no tracking, and every feature is free. Zorvik works offline and behind corporate proxies; its only connection of its own is the update check to GitHub.