Features
Built for AI-native
legal research
The first California case law platform your AI assistant can use directly. Every feature built for how attorneys actually research, with or without AI.
Years of Case Law
California Appellate Districts
Federal District Courts
MCP Tools for AI Assistants
Your AI assistant just became a California attorney
Caselegis connects directly to Claude, Cursor, and any MCP-compatible AI. Ask your assistant to find cases, check citations, or summarise holdings. It uses real case law, not hallucinations.
- Works with Claude Desktop and Cursor out of the box
- Six tools: search, get case, citation status, cites, cited-by, quota
- Quota-aware: 50 queries/month free, 2,000 on Pro
- Installed in 60 seconds with a single config block
- Open source, caselegis-mcp on PyPI
caselegis.search_cases("Rowland v. Christian followed", date_after="2020")
Rowland v. Christian (69 Cal.2d 108) is Green, followed by 1,847 cases. I found 23 decisions from 2020 to 2025 that explicitly followed its duty-of-care test.
Add to claude_desktop_config.json
"caselegis": { "command": "uvx", "args": ["caselegis-mcp"] }Know if a case is still good law
Every case gets an automatic Red, Yellow, or Green status based on citation network analysis. Stop citing overruled cases.
- Green: good law, affirmed or followed
- Yellow: use with caution, questioned or criticized
- Red: bad law, overruled, reversed, or vacated
- Signal word detection across the full citation network
- Plain-English explanation for every status
Affirmed, followed, or no negative treatment
Questioned, criticized, or distinguished
Overruled, reversed, or vacated
Rowland v. Christian, 69 Cal.2d 108
Followed by 1,847 cases. Landmark duty-of-care standard remains good law.
Find any California case in seconds
Full-text search across case names, courts, opinion text, citations, docket numbers, and party names. Results ranked by relevance with highlighted matching terms.
- Boolean operators: AND, OR, NOT
- Citation lookup, e.g. 69 Cal.2d 108
- Party name and attorney search
- Opinion text with matching snippets
- Filter by court, date range, and status
18,834 results
Hartley v. Pacific Surgical Assocs.
105 Cal.App.5th 812 · Feb 2025
Nguyen v. Santa Clara Unified Sch. Dist.
17 Cal.5th 221 · Sep 2024
Torres v. Meridian Health Grp.
108 Cal.App.5th 344 · Nov 2024
Explore the full citation network
See every case cited in an opinion and every later case that cites it. Filter by how courts treated the citation.
- Outgoing citations: cases this opinion references
- Incoming citations: later cases that cite this one
- Treatment filter: negative, cautionary, positive, neutral
- Citation count and summary statistics
- One-click navigation between cases
Rowland v. Christian
69 Cal.2d 108 (1968)
24
Cases cited
1,847
Cited by
Works with
Every major AI assistant
And more
Tools that save you time
AI case summaries
Generate concise summaries with holding, key facts, and reasoning in seconds.
Bookmarks and citations
Save cases with one click. Copy any citation to your clipboard instantly.
Export to PDF and DOCX
Download research as professionally formatted documents with citations included.
Saved search alerts
Save queries and get notified when new matching cases are decided.
Fast, modern interface
Search results in milliseconds. No loading screens. Works on any device.
Search history
Every search you run is saved automatically. Pick up where you left off, anytime.