Legal data, with provenance on every record.
U.S. court opinions, LAW.co's AI case summaries and its case citation graph — plus two narrow estate-planning tables. No statute corpus and no regulations are offered today.
5 legal datasets
U.S. Court Opinions (LAW.co corpus)
Federal and state court opinions in the LAW.co corpus: opinion text, case name, court, jurisdiction, decision date, docket number, reporter citations, judges, parties and attorneys. Legacy corpus is Caselaw Access Project-structured; newer opinions are ingested from CourtListener plain text behind LAW.co's copyright gate.
- Coverage
- U.S. federal, U.S. state (all 50)
- Records
- Not yet verified
- WEB
- REST
- MCP
- DOWNLOAD
LAW.co AI Case Summaries
LAW.co-generated plain-language summary, holding, key issues, topics and procedural posture for a prominence-selected subset of cases. Only enrichment that passed LAW.co's QA gate (published / approved / auto) is exposed. Machine-generated; not citable as authority.
- Coverage
- U.S. federal, U.S. state
- Records
- Not yet verified
- WEB
- REST
- MCP
- DOWNLOAD
LAW.co Case Citation Graph
Directed citation edges between cases (citing case → cited authority, with pin cite), seeded from CAP cites_to data and extended with eyecite extraction on ingest. Exposed per case as 'authorities cited' and 'cited by'.
- Coverage
- U.S. federal, U.S. state
- Records
- Not yet verified
- WEB
- REST
- MCP
- DOWNLOAD
State Estate-Planning Statute Reference Values
Small curated table of state-level estate-planning provisions (state, category, provision, value, effective date, source URL) maintained by LAW.co to drive estate-planner document generation and staleness checks. Not a statute corpus.
- Coverage
- U.S. state
- Records
- Not yet verified
- REST
- MCP
- DOWNLOAD
State Estate-Law Bill Monitor
Weekly LegiScan scan of state bills matching estate-planning keywords (wills, trusts, probate, POA, guardianship…), with status changes. Used internally to flag affected estate-planning matters.
- Coverage
- U.S. state (all 50)
- Records
- Not yet verified
- REST
- DOWNLOAD
What works today
| Dataset | Web (provider site) | REST API | MCP | Download |
|---|---|---|---|---|
| U.S. Court Opinions (LAW.co corpus) | Available | Available | Available | Awaiting rights confirmation |
| LAW.co AI Case Summaries | Available | Available | Available | Awaiting rights confirmation |
| LAW.co Case Citation Graph | Available | Available | Available | Awaiting rights confirmation |
| State Estate-Planning Statute Reference Values | — | Not yet connected | Not yet connected | Awaiting rights confirmation |
| State Estate-Law Bill Monitor | — | Not offered | — | Not offered |
Legal data by type
Case Law
U.S.
Court Opinions
Federal and state court opinions from the LAW.co corpus: opinion text, court, decision date, docket, citations, judges and parties, with source provenance..
Jurisdictions
Which U.S.
Federal
U.S.
State
U.S.
Legal Research
How to use LAW.co case law on the Data.co Marketplace for legal research tools and AI agents: retrieval, citation lookup, provenance and limits..
Statutes
Full statute corpora are not currently offered on the Data.co Marketplace.
Regulations
Federal and state regulations are not currently offered on the Data.co Marketplace.
Opinions, statutes and regulations
| Source | Who creates it | What it is | On the marketplace |
|---|---|---|---|
| Court opinions | Federal and state judges | Written decisions explaining how a court resolved a case; together they form case law. | Yes — LAW.co opinions, summaries and citation graph |
| Statutes | Congress and state legislatures | Laws as passed (session laws) and arranged by subject (codes). | No corpus — only a small estate-planning reference table |
| Regulations | Federal and state agencies | Rules issued under statutory authority, such as the CFR and state administrative codes. | Not offered |
What LAW.co holds — and what it doesn't
- Federal and state court opinions with case metadata (court, date, docket, reporter citations, judges, parties)
- LAW.co-generated case summaries, holdings, key issues and topics (published subset only)
- Case-to-case citation graph
- A small curated table of state estate-planning statute reference values
- An internal state bill monitor for estate-planning topics (third-party LegiScan data)
- Not held: A statute corpus (codes or session laws)
- Not held: Federal or state regulations
- Not held: A complete legislative feed
LAW.co is affiliated with Data.co. A written intercompany agreement covering redistribution, pricing and settlement is pending, so paid access and bulk downloads are not yet offered.
{
"id": "lawco:case:<id>",
"provenance": {
"provider": "lawco",
"upstreamSource": "CAP | courtlistener",
"licenseId": "us-gov-edicts-public-domain",
"isDerived": false,
"retrievedAt": "<ISO datetime>"
},
"enrichment": {
"summary": "<AI-generated, not authority>",
"provenance": { "licenseId": "lawco-proprietary", "isDerived": true }
}
}Public domain versus licensed content
Judges' opinions are public domain under the government-edicts doctrine, and case facts such as names, dates and citation strings are not copyrightable. Those records carry a public-domain license id and isDerived: false.
LAW.co's summaries, holdings, topics and citation graph are its own work, licensed rather than public, and priced as premium. Possible publisher headnotes in legacy head matter and CourtListener's CC BY-ND annotated HTML are excluded entirely. Even for public-domain text, bulk download stays off until LAW.co and counsel confirm the position, because LAW.co claims its compilation and arrangement.
How to cite marketplace records
Cite an opinion the way you would from any source: case name, reporter citation, court and year, with the canonical URL when the record has one. Where you display records, credit LAW.co as the provider and the upstream source named in provenance.
Do not cite an AI summary, holding or topic as the court's words; they are machine-generated and labeled as not authority. Opinion text is not official or certified, so verify quotations against the court's own record before filing or publishing.
Legal data FAQ
Why is LAW.co the only legal provider?
It was the first provider to complete our integration review. Other legal providers are welcome to apply; each goes through the same licensing, provenance and quality review.
Are record counts available?
Not yet. LAW.co's documentation reports a corpus size, but Data.co has not verified it, so every listing shows “Not yet verified”.
What are the demo records?
Synthetic placeholders titled [DEMO] with DEMO-#### citations. The previews on this site use them; the API returns live LAW.co records. They have no legal meaning and are never billed.
Can I resolve a citation to a case?
Not yet. LAW.co has no citation-resolution endpoint, so the resolve endpoint and the get_citation tool return unsupported_operation instead of guessing.
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