API Dev Studio Documentation¶
Mock APIs, catch webhooks, proxy requests — all in one local-first desktop app.
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Create Your First Project
Set up a project and start your mock server in under a minute.
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Mock Endpoints
Create REST endpoints with custom responses, status codes, and headers.
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Template Variables
Generate dynamic data with 30+ helpers like
{{uuid}},{{name}},{{email}}. -
Proxy & Record
Proxy real APIs and automatically record responses to generate mocks.
Automate & Configure¶
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Environments
Define variables for dev, staging, and production. Switch contexts with one click.
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Flows
Chain triggers and actions to simulate multi-step API workflows like payment callbacks.
Import & Export¶
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cURL Import
Paste a cURL command and instantly create a mock endpoint.
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Postman Import
Import Postman collections with folder structure and variable mapping.
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OpenAPI
Import OpenAPI specs to generate endpoints, or export your mocks as OpenAPI.
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Code Snippets
Copy endpoint calls as cURL, fetch, axios, or Python code.
Why API Dev Studio?¶
- Local-first — Everything runs on your machine. No cloud, no accounts, no data sharing.
- All-in-one — Replace webhook.site, Postman mocks, and json-server with a single app.
- Fast — Native desktop app built with Rust. Starts instantly, runs efficiently.
- Developer-friendly — Template variables, conditional responses, request inspector, and more.