Federal Register
Federal rules, proposed rules and public notices
Search United States federal rules, proposed rules, notices, and presidential documents.
Your information
Order documents by newest publication date or relevance, for example "newest".
Words to search in Federal Register documents, for example "overtime pay".
Publishing agency name or abbreviation, for example "Department of Labor" or "EPA".
Maximum documents to return, for example 20; defaults to 20 (up to 100).
Kind of document, for example “Proposed rule”; defaults to any.
Earliest publication date (inclusive), for example "2025-09-29"; defaults to 12 months ago.
Latest publication date (inclusive), for example "2026-09-29"; defaults to today.
More options
Return only documents whose comment period is still open, for example true; defaults to false.
Example results
Federal Register documents
About the Federal Register tool
Federal Register (FR) Search rules finds rules, proposed rules, notices, and presidential documents by topic, agency, dates, and comment status.
Search rules requires a topic and can also take an agency, date range, document type, comment status, and sort order.
Built from federalregister.gov. Last checked Sep 29, 2026.
Actions
Search rules
1 creditFind Federal Register rules, proposed rules, notices, and presidential documents by topic, agency, publication dates, and comment status. Significant means designated significant by the source; documents without that designation show no.
What you provide
| Field | Type | Required | Description |
|---|---|---|---|
Sortsort | Text | Optional | Order documents by newest publication date or relevance, for example "newest".Example: Relevance |
Topictopic | Text | Required | Words to search in Federal Register documents, for example "overtime pay".Example: PFAS drinking water |
Agencyagency | Text | Optional | Publishing agency name or abbreviation, for example "Department of Labor" or "EPA".Example: EPA |
Max Resultsmax_results | Number | Optional | Maximum documents to return, for example 20; defaults to 20 (up to 100).Example: 5 |
Document Typedocument_type | Text | Optional | Kind of document, for example "proposed_rule"; defaults to any.Example: Proposed rule |
Published Afterpublished_after | Date | Optional | Earliest publication date (inclusive), for example "2025-09-29"; defaults to 12 months ago.Example: 2025-09-29 |
Published Beforepublished_before | Date | Optional | Latest publication date (inclusive), for example "2026-09-29"; defaults to today.Example: 2026-09-29 |
Open for Comment Onlyopen_for_comment_only | Yes or no | Optional | Return only documents whose comment period is still open, for example true; defaults to false.Example: Yes |
What you get
| Field | Type | Description |
|---|---|---|
Documentsdocuments | List | Matching documents. |
Rindocuments[].rin | Text | Regulation Identifier Number or numbers, if listed.Example: 2040-AG49 |
Titledocuments[].title | Text | Document title.Example: Extending the Compliance Deadline for the PFOA and PFOS Maximum Contaminant… |
Summarydocuments[].summary | Text | Plain-text document abstract, if available.Example: On January 21, 2025, President Trump issued Executive Order 14173, "Ending… |
Agenciesdocuments[].agencies | List | Publishing agencies by name. |
PDF Linkdocuments[].pdf_link | Text | Official document PDF, if available.Example: https://www.govinfo.gov/content/pkg/FR-2026-05-20/pdf/2026-10086.pdf |
Document Typedocuments[].document_type | Text | Document type in words.Example: Proposed Rule |
Effective Datedocuments[].effective_date | Date | Date the rule takes effect, if listed.Example: 2026-10-26 |
Document Numberdocuments[].document_number | Text | Federal Register document number.Example: 2026-10086 |
Comment Deadlinedocuments[].comment_deadline | Date | Last day for public comments, if listed.Example: 2026-07-20 |
Publication Datedocuments[].publication_date | Date | Date published.Example: 2026-05-20 |
Significant Ruledocuments[].significant_rule | Yes or no | Whether the document is marked significant.Example: Yes |
Open for Comment Nowdocuments[].open_for_comment_now | Yes or no | Whether the listed comment deadline has not passed.Example: No |
Federal Register Linkdocuments[].federal_register_link | Text | Document page on FederalRegister.gov.Example: https://www.federalregister.gov/documents/2026/05/20/2026-10086/extending-the-c… |
Regulations Gov Comment Linkdocuments[].regulations_gov_comment_link | Text | Direct Regulations.gov comment page, if available.Example: http://www.regulations.gov/commenton/EPA-HQ-OAR-2025-0302-0001 |
Example result
For Sort: Relevance, Topic: PFAS drinking water, Agency: EPA, Max Results: 5, Document Type: Proposed rule, Published After: 2025-09-29, Published Before: 2026-09-29
{
"documents": [
{
"rin": "2040-AG49",
"title": "Extending the Compliance Deadline for the PFOA and PFOS Maximum Contaminant Levels",
"summary": "In this proposed rulemaking, the U.S. Environmental Protection Agency (EPA) proposes a federal exemption, pursuant to Safe Drinking Water Act (SDWA) 1416(f) and 1450(a)(1), that will extend the dates …",
"agencies": [
"Environmental Protection Agency"
],
"pdf_link": "https://www.govinfo.gov/content/pkg/FR-2026-05-20/pdf/2026-10086.pdf",
"document_type": "Proposed Rule",
"effective_date": null,
"document_number": "2026-10086",
"comment_deadline": "2026-07-20",
"publication_date": "2026-05-20",
"significant_rule": true,
"open_for_comment_now": false,
"federal_register_link": "https://www.federalregister.gov/documents/2026/05/20/2026-10086/extending-the-compliance-deadline-for-the-pfoa-and-pfos-maximum-contaminant-levels",
"regulations_gov_comment_link": null
}
]
}For developers
Call it from your code with one request. Change the values in input to run it on new data. To get an API key, open Developers at the bottom of Studio, turn on Developer mode and go to API keys.
curl 'https://api.fous.com/v1/query' \
--fail-with-body --silent --show-error --max-time 180 \
-H "Authorization: Bearer YOUR_API_KEY" \
-H 'Content-Type: application/json' \
--data-raw '{
"api": "@federal-register",
"visibility": "public",
"operation": "search_rules",
"version": 1,
"input": {
"sort": "relevance",
"topic": "PFAS drinking water",
"agency": "EPA",
"max_results": 5,
"document_type": "proposed_rule",
"published_after": "2025-09-29",
"published_before": "2026-09-29"
},
"response": {
"format": "json"
}
}'What you can do with it
- Find proposed rules about a policy topic.
- Track agency documents published within a date range.
- Identify documents with comment periods still open.
- Review rule effective dates and comment deadlines.
- Collect document titles, summaries, and publication details.
Questions about Federal Register
Can I run it with my own inputs?
Yes. Change the inputs in Studio and press Run, or send new inputs from your code, or ask a connected AI assistant.
Can I call this Federal Register tool as an API?
Yes. Send a POST request to /v1/query with your Fous API key and the inputs, and get JSON back.
How much does it cost?
Each completed run costs 1 credit. Failed runs without a completed receipt are free; completed work can remain charged if delivery is interrupted. With pay as you go, a credit costs 1¢. Monthly plans cost less per credit.
Do I need a Federal Register account?
No. You only need a Fous account.
How current is the data?
Fous gets the data from federalregister.gov when you run it. Some results are reused for up to 24 hours, and results that use your account or key are never reused. It was last verified on Sep 29, 2026.
Which proposed rules mention a particular topic?
Use Search rules with the topic and document type set to proposed rules.
Which documents are open for public comment?
Use Search rules with open for comment only enabled.
When does a rule take effect?
Search rules returns effective dates when listed.