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'.
- Web (provider site)Available
- REST APIAvailable
- MCPAvailable
- DownloadAwaiting rights confirmation
Dataset facts
- Provider
- LAW.co
- Source
- Caselaw Access Project cites_to — Seed forward edges for the legacy corpus.
- LAW.co eyecite extraction — Edges extracted from public-domain opinion text on ingest.
- Category
- Legal
- Geographic coverage
- United States
- Jurisdiction
- U.S. federal, U.S. state
- Date range
- Not yet verified
- Last updated
- Not yet verified
- Update frequency
- On ingest (daily when the worker runs).
- Record count
- Not yet verified. Unverified.
- Formats
- JSON
- Document types
- citation-edge
- Pricing tier
- Premium
How you can reach this data
REST API
Availableauthorities / cited_by arrays on a case record (capped at 200 / 50 per case upstream).
MCP
AvailableVia Data.co MCP tools.
Download
Awaiting rights confirmationEdge-list export.
Why: Citation strings are facts, but the compiled graph is claimed by LAW.co (ToS §11).
Not available through Data.co yet.
Rights and redistribution
- Redistribution
- Paid — provider-owned, licensed access only
- Bulk download
- Awaiting rights confirmation
- Notes
- Summaries, holdings, issue lists, topics, classifications, citation graph and embeddings are owned by LAW.co. Redistribution via Data.co requires an intercompany license (open question).
- Agreement
- LAW.co and Data.co are affiliated. A written intercompany agreement covering redistribution and pricing is pending; until it is signed, Data.co does not sell access to or bulk-export this dataset.
5 fields
| Field | Type | Nullable | Origin | Description |
|---|---|---|---|---|
citing_case_id | integer | No | Source | Citing case id. |
cited_case_id | integer | Yes | Source | Cited case id when resolved inside the corpus. |
cited_cite | string | Yes | Source | Citation string as detected. |
pin_cite | string | Yes | Source | Pin cite. |
source | string | Yes | Source | eyecite | cites_to. |
What a record looks like
[
{
"citing_case_id": "demo:case:0002",
"cited_case_id": "demo:case:0001",
"cited_cite": "DEMO-0001",
"pin_cite": null,
"source": "demo",
"demo": true
},
{
"citing_case_id": "demo:case:0003",
"cited_case_id": "demo:case:0002",
"cited_cite": "DEMO-0002",
"pin_cite": null,
"source": "demo",
"demo": true
},
{
"citing_case_id": "demo:case:0004",
"cited_case_id": "demo:case:0003",
"cited_cite": "DEMO-0003",
"pin_cite": null,
"source": "demo",
"demo": true
}
]Search the demo records
Known limitations
- Unresolved cites (external or not-yet-ingested authorities) have no cited_case_id.
Premium
Premium tier: provider-owned content priced separately from plan access. Pricing depends on the pending LAW.co agreement and is not published yet.
Access is included in Marketplace plans — see pricing. Provider prices for premium tiers are not published yet. Demo records are never billed.
REST and MCP, one key.
The Data.co API and MCP server are live, and this dataset's REST access is available. Shapes follow the API reference.
curl https://api.data.co/v1/datasets/lawco-citation-graph \
-H "Authorization: Bearer $DATACO_API_KEY"Example calls · set DATACO_API_KEY to your key
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