Legal Data Hunter connects ChatGPT to the world's fastest-growing open legal corpus — a continuously-updated index of 32M+ documents from 180+ jurisdictions. LDH ingests directly from official registries — Légifrance, BOE, EUR-Lex, RIS, the Bundesgerichtshof, the European Court of Human Rights, and hundreds more — and exposes them through a focused tool surface: hybrid semantic + keyword search, citation resolution (ECLI, CELEX, case numbers, article references with 95% accuracy across 184 sources), full-text retrieval, and discovery tools that tell the assistant what we have for a jurisdiction before it queries.
Free tier covers 20 searches/day for punctual research needs; paid plans scale to 100,000/month. Used by lawyers, paralegals, and legal-tech builders worldwide.
How to use
- 1Add it in ChatGPT
Open Legal Data Hunter in ChatGPT's Plugin directory (button above), select + to add it and sign in if asked.
- 2Use it in a chat
Type @ in the composer and pick Legal Data Hunter, or start your message with its name. ChatGPT may also suggest it when it fits what you ask.
Skills 6
- Cross-Border Comparison
Compare a legal question across jurisdictions with verified citations
- Legal Citations
Inline citation discipline — never invent a URL
- Legal Research (Multi-Jurisdictional)
Cross-border legal research with verified inline citations
- Legal Risk Assessment
Severity × likelihood legal-risk scoring
- Multi-Issue Legal Memo
Long-form memo decomposed by sub-issue, each with its own controlling authority
- Resolve Citation
Loose legal citation → exact verified document + URL
Things to ask
- “What legal data sources do you have for Spain? Show the source names, document types, coverage dates, and document counts.”
- “Compare GDPR Article 6 with the equivalent French data-protection provision.”
- “Compare how Spain, the United Kingdom, California, and Australia classify workers on digital labor platforms.”
Disconnect
- 1Disconnect it in ChatGPT
Open Settings, then Apps or Plugins (the label depends on your rollout), select Legal Data Hunter and choose Disconnect. ChatGPT stops acting through your account; past conversations aren't deleted.