resolver.openlegaldata.net

Citation Resolver — Explorer

Browse the reference data behind citation resolution — every US reporter and court — and trace how a citation as written finds its record.
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Type a citation as a lawyer or an LLM would write it. The resolver classifies it into a family, reduces it to a lookup core, and picks the island(s) that can answer — then you GET /resolve. Reporters that the fixed anchor misses are recognised against reporters-db.

1 · Family
2 · Recognised via
3 · Lookup core
4 · Pinpoint

Every reporter edition in Free Law Project reporters-db — the whitelist that lets the resolver recognise a real citation. Filter by type; search matches the abbreviation or full name.

AbbreviationTypeReporter

Every court in Free Law Project courts-db — federal and state, current and historical. The resolver normalises a court name or abbreviation to one of these canonical ids. Filter by jurisdiction, level, or system.

CitationCourtJuris.LevelId

A citation's family decides which islands can answer it. This is the routing table the resolver dispatches on.

Endpoints

All served from resolver.openlegaldata.net. Data endpoints need an API key (?key= or X-API-Key); classification is public.