How does the interactive console work?

Developers select an endpoint, fill in parameters, choose their API key (sandbox or production), and click Send. The console calls the actual API in real time and displays the response body, headers, status code, and latency. It helps developers understand the API without writing any code first.

How does OAuth 2.0 client credentials work?

Enterprise developers register an OAuth application, receive a client ID and secret, and use the client credentials flow to get a bearer token from the token endpoint. The token is used in API calls. Tokens expire and are refreshed automatically by the SDK.

How are rate limits enforced?

Each API key has a per-second and per-month rate limit. The API gateway uses Redis for a sliding window counter. When the limit is reached, a 429 response is returned with a Retry-After header. Developers see their current usage vs limits in the portal dashboard.

Technology & SaaS

Build a API Developer Portal with AI - in Hours

ProjectCode generates a complete, production-ready API Developer Portal from a single natural language prompt. In hours instead of months, you get a React frontend, NestJS REST API, PostgreSQL database, and authentication - fully integrated, live-previewed, and deployed to a URL you own.

Estimated build time: 2–4 hours

Build my Developer Portal now View pricing

Free to start · No credit card required

The Challenge

Why building a Developer Portal from scratch is hard

Building a API Developer Portal from scratch requires months of development time and significant engineering resources. Teams struggle to coordinate frontend, backend, database, and authentication while managing developer portal-specific business logic, integrations, and role-based access rules.

What's Included

Everything your Developer Portal needs

ProjectCode generates a production-ready Developer Portal with all the modules your team needs from day one.

API reference documentation with interactive try-it console

API key and OAuth credential management

Sandbox environment with test data

Rate limit management and quota dashboards per key

Changelog and versioning notices

SDK download for popular languages

Developer usage analytics by endpoint and key

Support integration with ticket submission from docs

Architecture

How it's built

The generated Developer Portal follows production-grade architecture patterns.

React 18 + TypeScript frontend with role-based dashboards tailored for developer portal workflows

NestJS REST API with dedicated developer portal modules, DTOs, validators, and service layer

PostgreSQL relational schema with normalized tables for all developer portal entities

JWT + Google OAuth authentication with granular permission gates per role

Real-time Socket.IO events for live developer portal status updates and notifications

Managed hosting with one-click deploy, custom domain, and auto-SSL

Database

PostgreSQL schema designed for Developer Portal

ProjectCode generates a normalized, indexed PostgreSQL schema with the right tables and relationships for your use case. You own the schema and can evolve it freely.

api_keys (id, developer_id, name, key_hash, environment, scopes jsonb, rate_limit, quota_monthly, last_used_at, created_at, workspace_id)
api_requests (id, key_id, endpoint, method, status_code, duration_ms, timestamp, version)
documentation_pages (id, slug, title, content, category, version, is_published, last_updated_by)
changelogs (id, version, date, type, title, description, breaking, workspace_id)

schema.sql (preview)

-- Generated by ProjectCode
-- API Developer Portal schema

CREATE TABLE api_keys__id (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  created_at TIMESTAMPTZ DEFAULT NOW(),
  updated_at TIMESTAMPTZ DEFAULT NOW()
  -- ... auto-generated columns
);

CREATE TABLE api_requests__id (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  created_at TIMESTAMPTZ DEFAULT NOW(),
  updated_at TIMESTAMPTZ DEFAULT NOW()
  -- ... auto-generated columns
);

CREATE TABLE documentation_pages__id (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  created_at TIMESTAMPTZ DEFAULT NOW(),
  updated_at TIMESTAMPTZ DEFAULT NOW()
  -- ... auto-generated columns
);

CREATE TABLE changelogs__id (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  created_at TIMESTAMPTZ DEFAULT NOW(),
  updated_at TIMESTAMPTZ DEFAULT NOW()
  -- ... auto-generated columns
);

Tech Stack

Production-ready from day one

Every generated app uses a battle-tested stack you can deploy anywhere and own completely.

Frontend

React 18 + TypeScript + Tailwind CSS

Backend

NestJS 10 + Node.js + TypeScript

Database

PostgreSQL (managed or Supabase)

Auth

Email OTP · Google OAuth · GitHub OAuth

Deployment

Managed hosting · Custom domain · Auto-SSL

AI Models

Claude Sonnet · Claude Opus · Kimi

Try It Now

Example prompt to get started

Copy this prompt into ProjectCode and get a working app in minutes.

ProjectCode prompt

Build a developer portal for a fintech API platform with 5,000 registered developers. Include OpenAPI-spec-generated reference documentation with an interactive console for live API calls, API key and OAuth 2.0 client credential management per developer, a sandbox environment with test data seeding, per-key rate limit and monthly quota dashboards, a versioned changelog with RSS feed and email notification for breaking changes, SDK downloads for Python, Node.js, and Go, developer usage analytics showing top endpoints and error rates by key, and a support ticket widget integrated with Zendesk.

Build this now - it's free

Deployment

Deploy your Developer Portal anywhere

Managed hosting

One-click deploy to a live URL managed by ProjectCode.

Custom domain

Connect your own domain with auto-provisioned SSL via Cloudflare.

GitHub export

Push to your GitHub repo and self-host or deploy via Vercel, Railway, or AWS.

Docker ready

Export a Dockerfile and docker-compose for any containerized environment.

Pricing

Start free, scale as you grow

No per-seat fees. No vendor lock-in. Token-based pricing that scales with your usage.

Free

Start building your first app. Live preview, managed hosting, and full code export included.

Token Packs

From $5

Purchase token packs that roll over every month. Build more, pay only for what you use.

Enterprise

Custom

Custom models, SLA, SSO, and private cloud deployment for large teams.

See full pricing details

FAQ

Common questions about building a Developer Portal

You provide your OpenAPI specification (YAML or JSON). The portal parses it and generates interactive reference pages for each endpoint with request parameters, headers, response schemas, and code examples in multiple languages. Documentation stays in sync with your spec.

More apps you can build

Technology & SaaS

SaaS Application Platform

Building a SaaS Application Platform from scratch requires months of development time and significant engineering resources. Teams struggle to coordinate frontend, backend, database, and authentication while managing saas platform-specific business logic, integrations, and role-based access rules.

Build it

Build your Developer Portal in hours, not months

Start free. No credit card. Your first app is live in minutes.

Get started free