Federal Register

How to Use This API

1. List Recent Documents

https://www.federalregister.gov/api/v1/documents.json

Returns the most recent 20 documents with titles, dates, agencies, and URLs.

2. Search by Agency and Type

Find proposed rules from the EPA:

https://www.federalregister.gov/api/v1/documents.json?conditions[agencies][]=environmental-protection-agency&conditions[document_type]=proposed_rule

3. JavaScript — Search and Display

const url = 'https://www.federalregister.gov/api/v1/documents.json?' +
  'conditions[agencies][]=sec-securities-and-exchange-commission&' +
  'conditions[document_type]=rule&per_page=5';

fetch(url)
  .then(r => r.json())
  .then(data => {
    console.log('Total results:', data.count);
    data.results.forEach(doc => {
      console.log(doc.title);
      console.log('  Published:', doc.publication_date);
      console.log('  FR Doc:', doc.document_number);
    });
  });

4. Python — Monitor New Rules by Keyword

import requests

params = {
    'conditions[term]': 'artificial intelligence',
    'conditions[document_type]': 'rule',
    'order': 'newest',
    'per_page': 10
}
r = requests.get('https://www.federalregister.gov/api/v1/documents.json', params=params)
data = r.json()
for doc in data['results']:
    print(f"{doc['publication_date']}: {doc['title'][:80]}...")
    print(f"  Agency: {doc['agency_names'][0] if doc['agency_names'] else 'N/A'}")