Add API Endpoints Automatically

Name: Add API Endpoints Automatically
Price: 8.99 USD
Availability: InStock
Author: Agensi

by Mariusz Wrzeszczynski

Automatically add API endpoints to existing projects.

$8.99

30-day refund guarantee

Secure checkout via Stripe

0 installsSecurity scanned

Works with the AI tools you already use

CCCGGVWM+14 more

See it in action

You say

Add a POST endpoint to /users that accepts an email and password, validates the input, and returns a 201.

Your agent does

Project Detected: Express (Node.js)

Endpoint Added:

Method: POST
Route: /users
Purpose: User registration

Implementation Summary:

Added route to /routes/users.js
Created controller logic in /controllers/userController.js
Added Joi validation middleware

Files Modified:

src/routes/users.js
src/controllers/userController.js

Validation Result: All tests passed (2 tests executed).

How to Test: curl -X POST http://localhost:3000/users -d '{"email":"test@example.com", "password":"password123"}'

What you get

Add new REST endpoints that follow existing project routing patterns.Implement request validation middleware for incoming API payloads.Generate unit tests that match the project's current testing suite.Extend controllers with new business logic and response handling.

About this skill

The problem

Manually scaffolding new API endpoints is repetitive and error-prone. It is easy to deviate from established project conventions, miss validation logic, or forget to update the corresponding test suites.

What it does

Detects existing backend frameworks and routing patterns automatically.
Generates RESTful routes and controllers following project-specific naming conventions.
Implements request validation and response handling based on existing middleware.
Updates or creates test files to match the current testing architecture.
Validates changes using local linting and test execution tools.

Frameworks & tools

Works with any backend stack including Node.js (Express, Fastify), Python (FastAPI, Flask), Go, and Ruby on Rails. Utilizes Read, Edit, and Bash tools for implementation and verification.

Why this beats prompting it yourself

Generic prompts often produce hallucinated patterns or ignore your project's specific directory structure. This skill enforces a "Safety > Project Convention" priority, ensuring new code integrates with your existing middleware and architecture without manual refactoring.

Use cases

Adding a new POST endpoint to handle user registration with validation.
Extending an existing resource controller with a new PATCH route.
Scaffolding a health-check endpoint for a new microservice.
Implementing CRUD operations for a newly defined database model.

Known limitations

Requires an existing project structure to detect conventions. It will not invent database models from scratch unless explicitly required for the endpoint logic.