The verified court-data layer for legal AI and modern workflows.
1Court provides verified filing fees, e-filing rules, clerk contacts, and case lookup for 3,100+ U.S. counties across all 50 states and DC, plus a cited court deadline calculator. Access it through our directory, API, or MCP, and build on official sources.
Explore dataSearch any county or state
Connect via MCP/APIIntegrate in minutes
Use in your AI workflowGet verified, structured data
In Maricopa County, AZ, the civil complaint filing fee is $367 in Superior Court. E-filing is mandatory for attorneys (civil, tax, and family law) via eFileAZ, and permissive for self-represented filers.
- Court
- Maricopa County Superior Court
- Civil filing fee
- $367
- E-filing
- Mandatory for attorneys
(permissive for self-represented filers) - E-filing portal
- eFileAZ ↗
- Source
- 1Court Directory ↗
Get started in minutes
Go from question to verified court data in three steps.
Browse any county or state
Search filing fees, e-filing rules, clerk contacts, case lookup, and courthouses.
Connect through MCP/API
Use our REST API or MCP connector to bring the data into your tools.
Use verified data in your workflow
Power your AI, product, or research with cited court data.
All 50 states and DC
Every state plus DC
Every field cited to an official source
via MCP and any MCP client
Every court deadline, calculated, cited and on your calendar.
Enter one date and get every deadline that follows from it, with the rule text and the math shown. Save the case and it syncs to Outlook, Google or Apple, and updates itself when the trial moves or a rule changes.
California in depth
Civil, family, probate, evictions, small claims, government claims, criminal, juvenile and appeals, plus local rules for all 58 counties.
Federal courts
Federal civil, appellate and bankruptcy rules, the Ninth Circuit, and California's district and bankruptcy courts.
Shows its work
Every result lists the counting steps, skipped holidays and the verbatim rule, linked to the official source.
Independently reviewed, watched daily
Each rule set is re-checked against hand-computed test cases, and the official sources are re-read on a rolling schedule.
Free to start. Pro is free during early access.
Counting court days back from the hearing, and skipping Thanksgiving and the day after:
- Moving papers
- Fri, Nov 20, 2026
16 court days + 2 for e-service - Opposition
- Mon, Dec 7, 2026
9 court days before - Reply
- Fri, Dec 11, 2026
5 court days before - Source
- CCP 1005(b), (c) ↗
Built for modern legal workflows
Accurate, current court data for legal AI, products, and teams.
Legal AI →
Give your AI assistant access to verified, cited court information.
Filing & intake →
Power filing workflows, venue checks, and intake with accurate court data.
Deadlines & docketing →
Calculate and calendar court deadlines with every rule cited.
Your AI assistant just got a law library's worth of court knowledge.
Add the 1Court connector and your assistant answers court questions from our verified data on fees, e-filing rules, clerk contacts, case lookup and court deadlines, with every answer cited to its source. Built on the open MCP standard, so it works in Claude and any MCP-enabled assistant.
- 1In Claude, open Settings → Connectors and choose Add custom connector.
- 2Paste the endpoint
https://state.1court.ai/api/mcpand save. - 3Ask about any U.S. county, or for a court deadline. 1Court answers, with a citation.
- 4Prefer REST?
GET /api/county?state=TX&county=Harrisreturns structured JSON. No key required.
Four tools for everyone who works with the courts.
A public court directory, deadline calendaring, filing automation, and sentencing analytics. Different jobs, one mission: make the justice system faster and fairer to navigate.
Court Directory
Every state and DC, 3,100+ counties: courthouse locations, filing fees, e-filing portals, clerk contacts, and case lookup, verified and cited from official sources.
Open the directory → For attorneys & docketing teamsDeadlines
Court deadlines calculated from cited rules, with local rules for all 58 California counties and federal courts. Save a case and it stays current on your calendar.
Calculate a deadline → For filers & legal teamsSimpleCase
Auto-fills the court forms your jurisdiction requires, from cover sheets to summons to addendums, straight from your case data.
Visit SimpleCase → For attorneys & public defendersJustice Audit
Sentencing and inmate records, searchable in seconds. Surface disparities and flag clients held past their release date. Free.
Explore Justice Audit →Court data you can actually trust an AI with.
Most court information online is stale, thin, or wrong. Ours is researched from official sources, cited, and kept current. That is the accuracy an AI answer demands.
Verified from official sources
Fees, clerks, e-filing rules and deadline rules are checked against the court's own records, and each answer links back to prove it. Unverified fields are flagged, never guessed.
Kept current
Scheduled link monitoring and re-verification catch changes to fees, clerks, portals and rules before they go stale.
Built for AI, not just people
Structured, machine-readable, and MCP-native, so assistants can call it directly and cite the source.
1Court makes the American court system legible to people, professionals, and machines. We research and verify court data from official sources, then put it to work across a public directory, deadline calendaring, filing automation with SimpleCase, and sentencing analytics with Justice Audit.