eCFR Regulation Search by AAI
Claude connectorCommunitySearch all 50 titles of the US Code of Federal Regulations, about 8,300 parts. Find the right part by title or identifier and quote the exa…
Search United States federal regulations from the electronic Code of Federal Regulations (eCFR) directly in Claude. The collection covers about 8,300 CFR parts across all 50 titles, in English. Each part carries its agency and its place in the title, chapter and part hierarchy.
Claude can find a part by words in its title or by its eCFR identifier (for example us-cfr-title40-part98), check its versions, and search inside it for the passage that answers your question. Results come back as document details and matching excerpts, so Claude can cite the exact section it relies on. Full documents are never returned in one piece.
Useful for compliance teams, regulatory affairs, and anyone who needs a precise answer from US federal rules, including NHTSA vehicle safety standards and EPA emissions rules.
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Movement
From our daily snapshots over the last 30 days.
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Popularity score
Trending score
In its categories
How this connector compares with others in the same category. Positions are counted within the category, not across the whole directory.
Legal254th of 411 by popularity · not ranked by trending score
| # | Connector | Popularity | Trending | 7d |
|---|---|---|---|---|
| 252 | 4,524 | — | 72places up | |
| 253 | 4,524 | 16,844 #121 | 14places down | |
| 254 | 4,459 | — | — | |
| 255 |  SEAT Security Awareness Assessment | 4,459 | — | 165places down |
| 256 | 4,459 | — | 271places down |
This connector isn’t ranked by trending score, so the category’s top connectors are shown instead.
| # | Connector | Trending | Popularity | 7d |
|---|---|---|---|---|
| 1 |  Nevo | 444,766 | 11,054 #51 | 12places up |
| 2 |  imzala.net — Türk içtihat arşivi | 111,453 | 5,322 #223 | — |
| 3 | 105,454 | 5,931 #193 | — | |
| 4 | 82,117 | 6,267 #175 | — | |
| 5 | 80,710 | 8,963 #88 | — |
Data analytics1,679th of 2,740 by popularity · not ranked by trending score
| # | Connector | Popularity | Trending | 7d |
|---|---|---|---|---|
| 1677 | 4,459 | — | 411places down | |
| 1678 | 4,459 | — | — | |
| 1679 | 4,459 | — | — | |
| 1680 |  InvuPOS | 4,459 | — | — |
| 1681 |  Jimmy | 4,459 | 14,826 #701 | 271places down |
This connector isn’t ranked by trending score, so the category’s top connectors are shown instead.
| # | Connector | Trending | Popularity | 7d |
|---|---|---|---|---|
| 1 | 29,445,468 | 12,305 #156 | — | |
| 2 |  Netzero | 1,983,480 | 8,531 #622 | 3places up |
| 3 | 507,188 | 7,845 #770 | — | |
| 4 |  Statz | 483,976 | 7,129 #943 | 71places up |
| 5 | 483,162 | 7,827 #778 | 563places up |
More from AAI Innovations
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- find_documents
- get_document
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- Categories
- Made by
- AAI Innovations · Website
- Sign-in
- Required
- Connector URL
- https://mcp.aai-innovations.com/ecfr/mcp
- Transport
- Streamable HTTP
- Works with
- Claude, Claude API, Claude Code, Claude Desktop
- Added
- October 8, 2026
- More info
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