API Mock Server Config
Generate JSON Server configuration files from endpoint definitions. Set up a fully functional mock API server in seconds. Code never leaves your device — formatting and validation run locally in your browser.
How to Use the API Mock Server Config
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Frequently Asked Questions
What does this tool generate?
It generates a db.json file and route configuration for JSON Server — a fake REST API. Define your endpoints and the tool outputs ready-to-use config files for instant mock server setup.
What is JSON Server?
JSON Server is a Node.js tool that creates a full REST API from a JSON file. It supports GET, POST, PUT, PATCH, DELETE, filtering, pagination, and sorting — no backend code needed.
Can I define nested resources?
Yes. Define relationships like /posts/:id/comments by using nested object structures in the endpoint definitions. JSON Server handles the relational routing automatically.
Does it generate sample data?
The tool generates the config structure. For sample data, pair it with the Fake Data Generator or populate the db.json manually with realistic entries.
How do I start the mock server?
Install JSON Server (npm install -g json-server), then run json-server --watch db.json. The server starts on port 3000 with full CRUD endpoints.
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Last updated October 2026