vLex Citations API

Detect and resolve legal citations (vCite)

Operations 1

POST /v1/citations Detect Legal Citations #

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API
curl "https://apis.io/api/v1/apis/vlex-citations-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

vlex-citations-api-openapi.yml Raw ↑
openapi: 3.2.0
info:
  title: vLex Iceberg Anonymization Citations API
  description: The vLex Iceberg Anonymization API identifies and anonymizes names and personally identifiable information from any text input. Pre-trained on legal data to recognize personal names, organizations, and sensitive entities within legal documents, contracts, and court filings for privacy protection and data compliance workflows.
  version: 1.0.0
  contact:
    name: vLex Developer Support
    url: https://developer.vlex.com/
  license:
    name: Proprietary
    url: https://vlex.com/
servers:
- url: https://api.vlex.com
  description: vLex Iceberg API
tags:
- name: Citations
  description: Detect and resolve legal citations (vCite)
paths:
  /v1/citations:
    post:
      operationId: detectCitations
      summary: Detect Legal Citations
      description: Detect and parse legal citations from text using vLex's vCite algorithm. Supports citation formats from 20+ jurisdictions. Returns structured citation data with links to referenced documents where available.
      tags:
      - Citations
      security:
      - SubscriptionKey: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CitationRequest'
      responses:
        '200':
          description: Detected citations
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CitationResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  schemas:
    Citation:
      type: object
      description: A detected legal citation.
      properties:
        raw_text:
          type: string
          description: Citation text as found in the document.
          example: 347 U.S. 483 (1954)
        document_id:
          type: string
          description: vLex ID of the referenced document, if resolved.
        citation_type:
          type: string
          description: Type of citation (case, statute, regulation, etc.).
        jurisdiction:
          type: string
        year:
          type: integer
        start_offset:
          type: integer
        end_offset:
          type: integer
        url:
          type: string
          format: uri
          description: Link to the cited document on vlex.com.
    Error:
      type: object
      properties:
        error:
          type: string
        message:
          type: string
    CitationResponse:
      type: object
      properties:
        citations:
          type: array
          items:
            $ref: '#/components/schemas/Citation'
        citation_count:
          type: integer
    CitationRequest:
      type: object
      required:
      - text
      properties:
        text:
          type: string
          description: Legal text containing citations to detect.
        jurisdiction:
          type: string
          description: Primary jurisdiction for citation parsing (helps with ambiguous formats).
  responses:
    Unauthorized:
      description: Invalid or missing subscription key
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  securitySchemes:
    SubscriptionKey:
      type: apiKey
      in: header
      name: Ocp-Apim-Subscription-Key
      description: vLex API subscription key obtained from the developer portal.
externalDocs:
  description: vLex Developer Portal
  url: https://developer.vlex.com/apis