US Constitution API

The first US Constitution and Bill of Rights API

The Ultimate Dev Platform For A Nation

The US Constitution is the ultimate dev platform. From these requirements we built a great nation. It's time to put that capacity into applications. Reference the Constitution in your AI Agents easily, and use it as a source of guidance in work, and maybe even personal life.

API Documentation Try It Now Beautiful Constitution View View All 27 Amendments

API Features

Complete Access

Access the full text of the US Constitution and Bill of Rights with simple API calls.

Article & Amendment Access

Retrieve specific articles and amendments using their numbers.

Search Functionality

Search the full text for keywords and phrases.

Free Demo API Keys

Try the API with a free key that includes 10 requests.

Try the API

Get Your API Key

Generate a free demo API key with 10 requests to try out the API.

Enter or Paste Your API Key

Get the First Amendment

GET /api/amendments/I
Headers:
  X-API-Key: YOUR_API_KEY

Response:

Get Any Amendment

GET /api/amendments/{NUMBER}
Headers:
  X-API-Key: YOUR_API_KEY

Response:

Search the Constitution

GET /api/search?query=YOUR_SEARCH_TERM
Headers:
  X-API-Key: YOUR_API_KEY

Response:

US Constitution AI Agent

Coming Soon: Constitutional AI

We're developing an AI Agent specialized in the US Constitution that can:

  • Answer questions about constitutional principles
  • Provide historical context for amendments and articles
  • Help interpret constitutional concepts for modern applications
  • Support developers, educators, and citizens in understanding America's foundational document

The Constitution wasn't just a document - it was a platform for building a nation. Now it can be a platform for your applications.

Express Interest

Be the first to know when our US Constitution AI Agent launches.