Free Law Project

Free Law Project Citations API

Citation lookup and verification.

GitHub OpenAPI

Documentation

📖
Documentation
https://www.courtlistener.com/help/api/rest/

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/free-law-project/refs/heads/main/openapi/free-law-project-citations-api-openapi.yml

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OpenAPI Specification

free-law-project-citations-api-openapi.yml Raw ↑ 
openapi: 3.1.0
info:
  title: Free Law Project / CourtListener REST Alerts Citations API
  description: The CourtListener REST API (operated by Free Law Project) provides programmatic access to case law, PACER data, the RECAP archive, oral arguments, judges, financial disclosures, citations, citation networks, alerts, tags, and visualizations.
  version: '4.3'
  contact:
    name: Free Law Project
    url: https://free.law/
servers:
- url: https://www.courtlistener.com/api/rest/v4
  description: CourtListener REST API v4
security:
- TokenAuth: []
tags:
- name: Citations
  description: Citation lookup and verification.
paths:
  /citation-lookup/:
    post:
      summary: Lookup citations in text
      operationId: lookupCitations
      tags:
      - Citations
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                text:
                  type: string
      responses:
        '200':
          description: Resolved citations.
components:
  securitySchemes:
    TokenAuth:
      type: apiKey
      in: header
      name: Authorization
      description: 'HTTP token authentication. Format: `Token <your-token>`.'