Builder Agent

Hyper-Focused API Endpoint Stub Creation for Solo SaaS Founders

Stop doing this manually. Deploy an autonomous Builder agent to handle api endpoint stub creation entirely in the background.

Get Started

Zero-Shot Command Setup

Create a mock API endpoint for a `GET /products` request. It should return a list of 3-5 product objects, each with an `id`, `name`, `price`, and `stock` field. Use Python with Flask.

Core Benefits & ROI

Enables parallel frontend/backend development
Unblocks frontend development instantly
Accelerates integration testing
Reduces dependencies between teams
Speeds up prototyping and demos
Ensures consistent API contracts

Ecosystem Integration

This agent is a vital tool within the "Product Development & Engineering" pillar, specifically for accelerating full-stack development. By generating API stubs, it allows frontend and backend teams to work concurrently without waiting for the other's completion, reducing bottlenecks and fostering agile development practices. This leads to faster iteration cycles and quicker delivery of features, as integration challenges can be identified and resolved earlier in the development process.

Sample Output

```python # app.py from flask import Flask, jsonify, request app = Flask(__name__) # Sample product data products_data = [ {"id": "prod001", "name": "Wireless Headphones", "price": 129.99, "stock": 50}, {"id": "prod002", "name": "Smartwatch", "price": 199.99, "stock": 30}, {"id": "prod003", "name": "USB-C Hub", "price": 49.99, "stock": 120}, {"id": "prod004", "name": "Ergonomic Mouse", "price": 35.50, "stock": 80} ] @app.route('/products', methods=['GET']) def get_products(): """ Returns a list of all products. """ # You could add filtering, pagination, etc. here if requested return jsonify(products_data) @app.route('/products/<string:product_id>', methods=['GET']) def get_product_by_id(product_id): """ Returns a single product by its ID. """ product = next((p for p in products_data if p["id"] == product_id), None) if product: return jsonify(product) return jsonify({"message": "Product not found"}), 404 if __name__ == '__main__': app.run(debug=True, port=5000) ``` *To run this:* 1. `pip install Flask` 2. `python app.py` 3. Access at `http://127.0.0.1:5000/products`

Frequently Asked Questions

Can I generate stubs for POST, PUT, or DELETE requests?

Yes, you can specify any standard HTTP method (GET, POST, PUT, DELETE, PATCH) and define the expected request body or response structure for each.

How can I make the stub return dynamic data or simulate errors?

You can instruct the agent to include logic for dynamic data (e.g., random IDs, varying stock levels) or to simulate error responses (e.g., 404 Not Found, 500 Internal Server Error) under certain conditions.