Law library: court opinions, statutes and court rules
The Legal Ops Depot law library holds about 10 million court decisions and every state’s statutes, with 3,400 courts matched to their official court rules, in 57 U.S. jurisdictions. It ranks the cases that bind your court first, and the same library plugs into Claude, Grok and your own software.
Try:access to the courts42 U.S.C. § 1983Heck v. Humphrey9th Cir. R. 10-3
Search every opinion, statute and rule
Search by words, a case name or a citation, with your words highlighted. The first 5 results are open to everyone; a free account shows all of them, 20 a page, with filters by court, date and type.
Best authority firstThe cases that bind your court, first
Pick your court and a topic. U.S. Supreme Court cases come first (for a state court, they bind on federal questions), then the courts above yours, then your own court, then persuasive courts, each with its citation count and a treatment badge. Free to try, and your AI agent can run the same ranking through the connector.
What is in the Legal Ops Depot law library?
Primary law
- 01Case lawOpenAbout 10 million court decisions from 2,197 courts.
- 02StatutesOpenEvery state constitution and the U.S. Constitution, section by section; any code section by citation.
- 03RegulationsOpenThe Code of Federal Regulations, section by section.
- 04Court rulesOpen3,400 courts matched to their official court rules, in 57 U.S. jurisdictions.
- 05ConstitutionsOpenThe U.S. Constitution, every state constitution and Puerto Rico’s.
- 06Sentencing guidelinesOpenThe federal Guidelines Manual and the state guidelines the library holds.
- 07Session lawsLinkActs as passed, before they are placed in the code: each legislature’s own pages.
Finding tools
- 08Search the libraryOpenWords, a case name or a citation, across opinions, statutes and court rules.
- 09Best authority for your courtOpenThe cases that bind your court come first.
- 10CitatorOpenOn every case page: the later cases that cite it, and the cases it cites.
- 11Citation checkOpenPaste a draft and see whether each case citation is in the library. Free, no account.
- 12Court directoryOpenEvery court system, from its highest court down.
- 13Popular names tableOpenFind a federal law by its common name, from the U.S. Code’s own table.
Official sources elsewhere (links)
- 14Court formsLinkEach state court system's own forms page.
- 15Court rules by state (links)LinkLinks to each state's official court-rules pages, local rules included. Local rules are not loaded or applied here.
- 16Federal RegisterLinkNew and proposed federal rules.
- 17Jury instructionsLinkPattern jury instructions from the courts that publish them.
- 18Attorney general opinionsLinkFormal opinions from the state attorneys general.
- 19Federal agency decisionsLinkDecisions of federal boards and commissions.
- 20Uniform lawsLinkThe Uniform Law Commission’s acts.
- 21Business entity searchLinkLook up a company in a state's official business records.
- 22Federal publicationsLinkGovInfo: federal session laws and congressional records.
Open: the text is in the library. Link: the official source, or our page of checked official links.
How do I use the law library from Claude, Grok or my own software?
About a minute. You need a free account first.
Add the law library to your AI app
- Create a free account. No card needed. Already have one? Sign in.
- In your AI app, open Connectors and choose to add a custom connector. Paste this address:
https://mcp .legalopsdepot .com /mcp - Sign in on our page when the app sends you there. Your password never goes into the chat.
Every tool it can use is read-only. Lookups are one daily allowance across this site, your AI and the API.
Can I use it from my own software?
Yes. Make an API key on your account page and call the same read-only tools over HTTPS. Calls use the same daily lookups as the connector.
curl -X POST \
-H "authorization: Bearer slo_ak_…" \
-H "content-type: application/json" \
-d '{"query": "Liberty Lobby"}' \
https://mcp.legalopsdepot.com/v1/tools/search_casesStep-by-step for Claude and other AI apps, the full list of tools and the limits on each plan: the connector and API guide. Your address and usage are always on your account page.
How much does the law library cost?
Billed monthly. Cancel any time from your account page. A lookup is one request to the library, from this site, your AI assistant or the API.
- Full search on this site
- Connector for Claude, Grok and other AI apps
- API key for your own tools
- No card needed
- Everything in Free
- For regular research by one person
- Cancel any time
- Everything in Plus
- For daily, heavy research
- Cancel any time
- Everything in Pro
- For offices with heavy volume
- 300 lookups a minute (other plans: 30)
Browse the law library by topic, state or court
Common research topics
Access to the courtsExcessive forceDeliberate indifferenceQualified immunityIneffective assistanceSearch and seizurePost-conviction reliefDue processStatute of limitationsAppeals
Courts by state, D.C. and Puerto Rico
- AL
- AK
- AZ
- AR
- CA
- CO
- CT
- DE
- DC
- FL
- GA
- HI
- ID
- IL
- IN
- IA
- KS
- KY
- LA
- ME
- MD
- MA
- MI
- MN
- MS
- MO
- MT
- NE
- NV
- NH
- NJ
- NM
- NY
- NC
- ND
- OH
- OK
- OR
- PA
- PR
- RI
- SC
- SD
- TN
- TX
- UT
- VT
- VA
- WA
- WV
- WI
- WY
Or start from the federal courts or the whole court directory.
What does each collection hold?
- About 10 million
- court decisions, with 77.5 million citation links
- 3,400 courts
- matched to their official court rules, in 57 U.S. jurisdictions
- Every state + federal
- statutes, plus DC and Puerto Rico
Court rules for 3,400 courts
The federal rules (civil, criminal, appellate, evidence, bankruptcy and the Supreme Court Rules), the rules of all 13 federal circuits, and state court rules state by state: 3,400 courts matched to their official court rules, in 57 U.S. jurisdictions. The court directory lists the courts, federal and state by state.
Federal and state statutes
The U.S. Code and the codes of all 50 states, the District of Columbia and Puerto Rico, plus the Code of Federal Regulations (eCFR text as of September 23, 2026). The constitutions of the United States, every state and Puerto Rico are here too. See statutes by jurisdiction.
About 10 million court decisions
About 10 million court decisions from 2,197 courts, with 77.5 million citation links between them. Look a case up by name, words or citation. Each court’s page in the court directory lists its most cited decisions.
Court-specific local rules and state administrative codes are not included.
What the library does not carry: law reviews, tribal law, city and county codes, treatises, practice guides and annotated encyclopedias, court dockets and verdict data.
Each opinion carries one of three badges: red when a later case overruled, abrogated or receded from it, with the badge saying which (verified, with a link to that case), yellow for other possible negative treatment, with the badge naming it and saying whether it is verified, and grey when this library has no negative treatment on file. Grey never says a case is still good law, and a badge that says “Treatment check unavailable” means the check could not be read. Read the citing cases before relying on any case.
Law library questions
Is the law library legal advice?
No. It is a research tool. It gives you the text of court opinions, statutes and court rules with their citations, so you and your assistant work from the real source instead of memory. We are not a law firm and nothing here is legal advice.
Does it tell me whether a case is still good law?
No. It shows the cases that cite an opinion and the cases it cites, so you can read how later courts used it. Each opinion carries one of three badges: red when a later case overruled, abrogated or receded from it, with the badge saying which (verified, with a link to that case), yellow for other possible negative treatment, with the badge naming it and saying whether it is verified (for example “Superseded by statute (verified)”), and grey when this library has no negative treatment on file (“No negative treatment found in this library”). Grey never says a case is still good law. If the check could not be read, the badge says “Treatment check unavailable” instead. Read the later cases yourself before you rely on any case.
Do I need an account to read it?
Not for the open pages. Court pages, constitutions and statutes are open to anyone, and so is the first part of every court rule; a free account shows the whole rule. Searching beyond the first five results, full opinions, the cases that cite an opinion and best-authority ranking need a free account, and those use your daily lookups. The Free plan needs no card.
Can my AI assistant change anything in my account?
No. Every tool it can use is read-only. It can look things up and read your own case files, but it cannot file, edit, pay for or delete anything.
Which decisions are cited most in my court?
Each court with a page in the court directory lists the decisions of that court that later decisions in the library cite most often, open to anyone. Open the directory, choose the federal courts or your state, then your court. A high count shows a case is used often, not that it is still good law.
How do I read a case citation?
A citation such as 512 U.S. 477 gives the volume (512), the book series it is printed in (U.S., the United States Reports) and the first page (477). Type a citation into the case search and the library opens that case.
What counts as a lookup?
Each signed-in request to the library is one lookup: a search, an opinion or a best-authority ranking. Reading an open court, constitution, statute or court-rule page costs no lookup. Lookups are counted per account per day (UTC), across this site, the connector and the API together.
