Government (United States)
Use eCFR from your AI
Search and read the current text of US federal regulations in the eCFR (Electronic Code of Federal Regulations, titles 1-50): full-text search across all regulations, section-level text retrieval, and point-in-time views as of a past date. No API key required.
This server connects your AI client to the eCFR API, the continuously updated electronic version of the US Code of Federal Regulations maintained by the Office of the Federal Register and GPO. Where the Federal Register tells you what is changing, the eCFR is the codified text that results - the regulation as it stands today.
Key features:
- search_regulations: full-text search across all 50 CFR titles, returning the title/part/section citation of each hit with a highlighted excerpt, optionally restricted to one title.
- get_section_text: read the actual regulation text by citation (e.g. title 40, part 50, section 50.1). Without a section number it lists the part's section headings so you can drill in. A date parameter gives you the text as it stood on a past date - useful for point-in-time compliance questions.
- list_titles: the 50 titles with their subjects, last-amended dates and how current the eCFR text is.
The upstream API only serves regulation bodies as XML; this server converts them to plain text, and truncates very long sections rather than overflowing your context. Pair it with the Federal Register server: find a rulemaking there, then read the consolidated result here.
No API key is needed, and the content is US government work in the public domain.
What you need
- An Arlet account
- No API key or account registration is needed. Just switch it on in Arlet.
Choose your AI client
Pick the AI client you use to see how to connect it with eCFR.