DingDuff
Claude connectorCommunityFree legal research tool built by attorneys for attorneys; connects Claude to US legal authority (statutes, rules of procedure, case law, c…
DingDuff gives Claude the ability to directly access the law without going through another AI system. Once connected to DingDuff, Claude can:
- Browse, search, view, and download state and federal statutes, regulations, and court rules such as rules of civil procedure, rules of evidence, etc.
- Search, view, and download federal and state court opinions using boolean operators, fielded searches, phrase matching, and citation-network lookup ("show every case citing X").
- Pull PACER dockets and documents through the CourtListener RECAP archive.
- Run a deterministic citation review on a drafted memo or brief with the source passage highlighted alongside the cite for easy human verification. Quotes are checked against the cited authority programmatically (not by AI), preventing hallucinated citations from getting through.
DingDuff was built by attorneys who use it daily, making it a tool that does what attorneys actually need and a tool that attorneys actually like to use.
- Tools
- 25
exposed by this connector
Movement
From our daily snapshots over the last 30 days.
Rank by popularity
#561of 7,2942places up24h25places up7d
Rank by trending score
#873of 3,0726places down24h97places down7d
Popularity score
13,039+1924h+3967d
Trending score
25,398−5024h+3317d
In its categories
How this connector compares with others in the same category. Positions are counted within the category, not across the whole directory.
Legal25th of 411 by popularity · 75th of 193 by trending score
Order by
| # | Connector | Popularity | Trending | 7d |
|---|---|---|---|---|
| 23 |  Brightflag | 13,219 | 19,824 #100 | 13places down |
| 24 |  Paxton Legal Research | 13,109 | 9,654 #163 | 23places down |
| 25 | 13,039 | 25,398 #75 | 25places up | |
| 26 | 12,988 | 24,851 #77 | 21places down | |
| 27 |  Bloomberg Law | 12,863 | 11,883 #146 | 2places down |
| # | Connector | Trending | Popularity | 7d |
|---|---|---|---|---|
| 73 |  JusticeNow Library | 25,708 | 8,765 #93 | 134places down |
| 74 | 25,616 | 16,522 #6 | 62places down | |
| 75 | 25,398 | 13,039 #25 | 97places down | |
| 76 | 25,294 | 10,623 #57 | 59places down | |
| 77 | 24,851 | 12,988 #26 | 172places down |
Productivity284th of 4,005 by popularity · 472nd of 1,642 by trending score
Order by
| # | Connector | Popularity | Trending | 7d |
|---|---|---|---|---|
| 282 | 13,053 | 28,580 #408 | 18places down | |
| 283 | 13,040 | 6,329 #1483 | 13places down | |
| 284 | 13,039 | 25,398 #472 | 25places up | |
| 285 |  Fibery | 13,020 | 32,776 #315 | 24places down |
| 286 | 12,992 | 40,999 #173 | 18places down |
| # | Connector | Trending | Popularity | 7d |
|---|---|---|---|---|
| 470 | 25,497 | 13,933 #221 | 152places down | |
| 471 | 25,497 | 19,617 #17 | 323places down | |
| 472 | 25,398 | 13,039 #284 | 97places down | |
| 473 | 25,375 | 12,261 #368 | 46places up | |
| 474 | 25,359 | 4,755 #2176 | — |
Tools
- check_pacer_availability
- citecheck_review
- codes_browse
- codes_search
- codes_view
- courtlistener_full_search
- document_search_across_pacer_dockets
- metadata_view
- opinion_extract
- opinion_search
- fetch_opinion_file
- opinion_view
- pacer_docket_view
- pacer_document_view
- pacer_party_search
- retrieve_batch_screen
- search_courts
- search_for_pacer_docket
Show all 25Show fewer
- search_within_pacer_docket
- see_related_pacer_entries
- show_citing_opinions
- show_related_opinions
- fetch_statute_file
- submit_batch_screen
- opinion_verify
- Categories
- Sign-in
- Required
- Connector URL
- https://app.dingduff.com/mcp
- Transport
- Streamable HTTP
- Works with
- Claude, Claude Desktop
- Acts on
- Reference docs, Files & documents
- Department
- Legal
- Industry
- Legal
- Added
- June 26, 2026
- More info
- Sponsorship
- Promote this connector