Get rulebook

GET

api

rulebooks

{rulebook_id}

curl 'https://api.courtrules.app/api/v1/rulebooks/california-rules-of-court' \
  -H "Authorization: Bearer YOUR_API_KEY"

import requests

resp = requests.get(
    "https://api.courtrules.app/api/v1/rulebooks/california-rules-of-court",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
)
rulebook = resp.json()

const resp = await fetch("https://api.courtrules.app/api/v1/rulebooks/california-rules-of-court", {
  headers: { Authorization: "Bearer YOUR_API_KEY" },
});
const rulebook = await resp.json();

{
  "id": "california-rules-of-court",
  "name": "California Rules of Court",
  "aliases": ["CRC", "Cal. Rules of Court", "Cal. Rules Ct."],
  "jurisdiction": "CA",
  "scope": "statewide",
  "kind": "court_rules",
  "governed_court_ids": [],
  "issuer": "Judicial Council of California",
  "official_url": "https://courts.ca.gov/forms-rules/rules-court",
  "rule_count": 1488,
  "last_checked_at": "2026-10-19T08:20:21.677476+00:00",
  "site_url": "https://www.courtrules.app/rules/california-rules-of-court"
}

Returns one rulebook: its name and abbreviations, where it applies, who issues it, its official page, how many rules are in force, and when we last read the official source. The fields are the same as one item of /rulebooks. Call this when you already know the rulebook’s id and want its current rule_count or last_checked_at. To read its rules, use /rulebooks/{rulebook_id}/rules.

string

required

Rulebook identifier from /rulebooks, such as california-rules-of-court. Lowercase words joined by hyphens.

curl 'https://api.courtrules.app/api/v1/rulebooks/california-rules-of-court' \
  -H "Authorization: Bearer YOUR_API_KEY"

import requests

resp = requests.get(
    "https://api.courtrules.app/api/v1/rulebooks/california-rules-of-court",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
)
rulebook = resp.json()

const resp = await fetch("https://api.courtrules.app/api/v1/rulebooks/california-rules-of-court", {
  headers: { Authorization: "Bearer YOUR_API_KEY" },
});
const rulebook = await resp.json();

{
  "id": "california-rules-of-court",
  "name": "California Rules of Court",
  "aliases": ["CRC", "Cal. Rules of Court", "Cal. Rules Ct."],
  "jurisdiction": "CA",
  "scope": "statewide",
  "kind": "court_rules",
  "governed_court_ids": [],
  "issuer": "Judicial Council of California",
  "official_url": "https://courts.ca.gov/forms-rules/rules-court",
  "rule_count": 1488,
  "last_checked_at": "2026-10-19T08:20:21.677476+00:00",
  "site_url": "https://www.courtrules.app/rules/california-rules-of-court"
}

Response fields

string

Rulebook identifier. It does not change: if the official name changes, the name changes and the id stays.

string

Official name

string[]

Other names and abbreviations readers use, such as CRC

string

Where the rulebook applies: a two-letter state code, DC, or US for national federal rules

string

national, statewide or court. A statewide rulebook applies across its state.

string

court_rules, statute or administrative_code

string[]

Courts a court rulebook names. Empty for statewide and national rulebooks, which apply across their jurisdiction without naming courts; each rule says which courts it covers.

string

The body that adopts and publishes the rules

string

The issuer’s official page for the rulebook

integer

Rules in force that the official source still lists. Repealed, reserved and removed rules are not counted.

string | null

When we last read the official source. null before the first read.

string

The rulebook’s page on courtrules.app

Errors

400: Invalid rulebook identifier

Returned when rulebook_id cannot be an identifier: capital letters, underscores, or more than 80 characters.

400

{
  "error": "Invalid request",
  "details": [
    {
      "path": "rulebook_id",
      "message": "Use lowercase words joined by hyphens, such as california-rules-of-court"
    }
  ],
  "docs_url": "https://docs.courtrules.app/api-reference/get-rulebook"
}

404: Rulebook not found

Returned when no rulebook has this identifier. Rulebooks that are not in /rulebooks read as not found.

404

{
  "error": "Rulebook 'no-such-rulebook' not found.",
  "suggestion": "Use GET /api/v1/rulebooks to list the rulebooks you can read.",
  "docs_url": "https://docs.courtrules.app/api-reference/rulebooks"
}

One rulebook counts as one row against your daily row limit.

curl 'https://api.courtrules.app/api/v1/rulebooks/california-rules-of-court' \
  -H "Authorization: Bearer YOUR_API_KEY"

import requests

resp = requests.get(
    "https://api.courtrules.app/api/v1/rulebooks/california-rules-of-court",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
)
rulebook = resp.json()

const resp = await fetch("https://api.courtrules.app/api/v1/rulebooks/california-rules-of-court", {
  headers: { Authorization: "Bearer YOUR_API_KEY" },
});
const rulebook = await resp.json();

{
  "id": "california-rules-of-court",
  "name": "California Rules of Court",
  "aliases": ["CRC", "Cal. Rules of Court", "Cal. Rules Ct."],
  "jurisdiction": "CA",
  "scope": "statewide",
  "kind": "court_rules",
  "governed_court_ids": [],
  "issuer": "Judicial Council of California",
  "official_url": "https://courts.ca.gov/forms-rules/rules-court",
  "rule_count": 1488,
  "last_checked_at": "2026-10-19T08:20:21.677476+00:00",
  "site_url": "https://www.courtrules.app/rules/california-rules-of-court"
}

Overview

Endpoints

Policies

Response fields

Errors

400: Invalid rulebook identifier

404: Rulebook not found

​Response fields

​Errors

​400: Invalid rulebook identifier

​404: Rulebook not found

Response fields

Errors

400: Invalid rulebook identifier

404: Rulebook not found