Get API Circle Studio
Five ways to run the same workspace. Start in the browser with zero install, or pick the surface that fits your workflow.
Web app
Zero install. Open the browser and your first workspace is created automatically in local storage. The fastest way to try everything.
Open studio.apicircle.devDesktop app
Day-to-day development with OS-keychain secrets and local mock servers. Windows, macOS, and Linux.
Builds are currently unsigned, so the first launch shows a one-time OS prompt. Installing guide →
VS Code extension
Edit the same workspace as YAML, right in your editor.
$ code --install-extension apicircle.apicircle-vscodeCLI
Run collections, mocks, and imports in CI. Requires Node ≥ 20.
$ npm install -g @apicircle/cliMCP server
Let any AI client drive your workspace over the Model Context Protocol.
$ npm install -g @apicircle/mcp-serverWire up AI in four steps
The desktop and VS Code MCP panels generate a ready-to-paste config for every supported client.
Install the binary
npm install -g @apicircle/mcp-server — or use npx.
Pick your AI client
Claude, Cursor, Copilot, ChatGPT, and more.
Paste the snippet
Copy the generated config into your client.
Restart & go
The client now reads, authors, and runs requests.