ReferenceTools
search_regulations
Search the Code of Federal Regulations (eCFR)
search_regulations
Search the electronic Code of Federal Regulations (eCFR) for federal regulations.
Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
query | string | Yes | Search query |
title | number | No | CFR title number (1-50) |
date | string | No | Point-in-time date (ISO 8601) |
page | number | No | Page number (default: 1) |
page_size | number | No | Results per page (default: 20) |
Example Request
{
"query": "environmental protection",
"title": 40
}Example Response
{
"count": 156,
"page": 1,
"page_size": 20,
"results": [
{
"title": 40,
"chapter": "I",
"part": 50,
"section": "50.1",
"heading": "Definitions",
"text_snippet": "Environmental Protection Agency means the U.S. Environmental Protection Agency...",
"effective_date": "2024-01-15",
"url": "https://www.ecfr.gov/current/title-40/chapter-I/part-50/section-50.1"
}
]
}CFR Titles Reference
| Title | Subject |
|---|---|
| 7 | Agriculture |
| 12 | Banks and Banking |
| 14 | Aeronautics and Space |
| 17 | Securities |
| 21 | Food and Drugs |
| 26 | Internal Revenue |
| 29 | Labor |
| 40 | Environmental Protection |
| 42 | Public Health |
| 49 | Transportation |
Point-in-Time Search
Search regulations as they existed on a specific date:
{
"query": "emission standards",
"title": 40,
"date": "2023-01-01"
}Point-in-time search is useful for understanding regulatory history or researching regulations that were in effect during a specific period.