vLex

vLex (part of Clio) is a global legal intelligence platform that applies AI to ingest, enrich, classify, and deliver insights from over 100 million legal documents across 2,000+ multilingual sources. The vLex Iceberg platform provides REST APIs for legal document anonymization, classification, key phrase extraction, citation detection, and AI-powered legal research. vLex also offers the Fastcase Legal Data API for raw legal data feeds.

vLex publishes 6 API contracts indexed on the APIs.io network, including Anonymization API, Citations API, Classification API, and 3 more. Tagged areas include Artificial Intelligence, Classification, Legal Research, Legal Tech, and Natural Language Processing.

The vLex catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

vLex’s developer surface includes authentication, documentation, support, engineering blog, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

34.0/100 thin ▬ flat Agent 22/100 agent aware Front door AI 6/6 dominant Heartbeat 9/100 dormant Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessEnterpriseSelf serveFree trial⚡ Free to try

2 published contracts

Artificial Intelligence Classification Legal Research Legal Tech Natural Language Processing Privacy

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 34.0/100 · thin

Contract Quality 11.3 / 19

Developer Ergonomics 6.8 / 15

Access Clarity 1.6 / 15

Operational Transparency 0.9 / 10

Contract Governance 1.2 / 9

Discoverability 4.3 / 8

Regulatory Posture 2.2 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 22/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented) Ask about this →

8 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 10.6 — up to +17.9 composite points Ask about this →
Operational Transparency scores 9.5 — up to +11.8 composite points Ask about this →
Developer Ergonomics scores 45.2 — up to +11.0 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/vlex/apis.yml: open an issue on github.com/api-evangelist/vlex to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 6

Individual APIs this provider publishes, each with its own machine-readable definition.

vLex Remote Authentication API

Single sign-on authentication API for corporate vLex accounts. Generates redirect URLs using HMAC authentication for seamless user access to vLex.com from institutional portals.

vLex Anonymization API

Identify and anonymize personally identifiable information in text

vLex Citations API

Detect and resolve legal citations (vCite)

vLex Classification API

Classify legal documents and extract key phrases

vLex Documents API

Retrieve individual legal documents

vLex Search API

Search the vLex legal document corpus

Open Collections 7

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

vLex Iceberg Anonymization API

OPEN COLLECTION

vLex Iceberg Anonymization Citations API

OPEN COLLECTION

vLex Iceberg Anonymization Classification API

OPEN COLLECTION

vLex Iceberg Anonymization Documents API

OPEN COLLECTION

vLex Iceberg Anonymization API

OPEN COLLECTION

vLex Iceberg Legal Research API

OPEN COLLECTION

vLex Iceberg Anonymization Search API

OPEN COLLECTION

Scroll for all 7

vLex API pricing

Not yet checked against vLex's own pricing page. Compiled by API Evangelist on 2026-05-05 from vlex.com/products; confirm before you rely on a figure.

Plan	Price
Contact Sales enterprise	—

Plan details, limits and sources →

Rate limits

License-defined: governed by the API license / subscription agreement; not publicly published varies

Compiled by API Evangelist, not yet checked against vLex's documentation. Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

vLex Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

vLex Rate Limits

1 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

vLex Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Vlex Context

11 classes · 23 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

vLex — jsonschema rules

5 rules · 4 warn-severity 1 info-severity

SPECTRAL

vLex API Rules

8 rules · 3 error-severity 5 warn-severity

SPECTRAL

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

vLex Legal Document

10 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

vLex Legal Document Structure

0 properties

JSON STRUCTURE

Examples 1

Example request and response payloads for these APIs.

vLex Iceberg Anonymization Anonymize Text Example

5 fields

EXAMPLE

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

vLex Authentication

apiKey · 1 scheme

SECURITY

vLex Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

vLex Trust Center

SOC 2, HIPAA, GDPR

SECURITY

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

vLex Agentic Access

7 operations · 5 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Documentation 2

Reference material describing how the API behaves

Reference

Reference

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

TrustCenter

TrustCenter

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 3

Status, limits, changes, and where to get help

RateLimits

RateLimits

IssueTracker

IssueTracker

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Product

Product

Source (apis.yml)

aid: vlex
name: vLex
description: vLex (part of Clio) is a global legal intelligence platform that applies AI to ingest, enrich, classify, and
  deliver insights from over 100 million legal documents across 2,000+ multilingual sources. The vLex Iceberg platform provides
  REST APIs for legal document anonymization, classification, key phrase extraction, citation detection, and AI-powered legal
  research. vLex also offers the Fastcase Legal Data API for raw legal data feeds.
type: Index
deliveryModel:
  model: unknown
  license_evidence:
    not_product:
    - vlex/remote_auth
  open_source: unknown
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  - repository-not-product
  generated: '2026-09-25'
  method: derived
accessModel:
  pricing: enterprise
  onboarding: self-serve
  trial: true
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Enterprise (free trial) · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
position: Consuming
access: 3rd-Party
image: https://vlex.com/hubfs/vlex-logo.svg
tags:
- Artificial Intelligence
- Classification
- Legal Research
- Legal Tech
- Natural Language Processing
- Privacy
tags_raw:
- AI
- Classification
- Legal Research
- Legal Tech
- Natural Language Processing
- Privacy
created: '2025-03-01'
modified: '2026-05-19'
url: https://raw.githubusercontent.com/api-evangelist/vlex/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: vlex:remote-auth-api
  name: vLex Remote Authentication API
  description: Single sign-on authentication API for corporate vLex accounts. Generates redirect URLs using HMAC authentication
    for seamless user access to vLex.com from institutional portals.
  humanURL: https://github.com/vlex/remote_auth
  tags:
  - Authentication
  - SSO
  tags_raw:
  - Authentication
  - Single Sign-On
  - SSO
  properties:
  - type: GitHubRepository
    url: https://github.com/vlex/remote_auth
- aid: vlex:vlex-anonymization-api
  name: vLex Anonymization API
  description: Identify and anonymize personally identifiable information in text
  humanURL: https://developer.vlex.com/apis
  tags:
  - Anonymization
  properties:
  - type: OpenAPI
    url: openapi/vlex-anonymization-api-openapi.yml
  - type: Documentation
    url: https://developer.vlex.com/apis
- aid: vlex:vlex-citations-api
  name: vLex Citations API
  description: Detect and resolve legal citations (vCite)
  humanURL: https://developer.vlex.com/apis
  tags:
  - Citations
  properties:
  - type: OpenAPI
    url: openapi/vlex-citations-api-openapi.yml
  - type: Documentation
    url: https://developer.vlex.com/apis
- aid: vlex:vlex-classification-api
  name: vLex Classification API
  description: Classify legal documents and extract key phrases
  humanURL: https://developer.vlex.com/apis
  tags:
  - Classification
  properties:
  - type: OpenAPI
    url: openapi/vlex-classification-api-openapi.yml
  - type: Documentation
    url: https://developer.vlex.com/apis
- aid: vlex:vlex-documents-api
  name: vLex Documents API
  description: Retrieve individual legal documents
  humanURL: https://developer.vlex.com/apis
  tags:
  - Documents
  properties:
  - type: OpenAPI
    url: openapi/vlex-documents-api-openapi.yml
  - type: Documentation
    url: https://developer.vlex.com/apis
- aid: vlex:vlex-search-api
  name: vLex Search API
  description: Search the vLex legal document corpus
  humanURL: https://developer.vlex.com/apis
  tags:
  - Search
  properties:
  - type: OpenAPI
    url: openapi/vlex-search-api-openapi.yml
  - type: Documentation
    url: https://developer.vlex.com/apis
common:
- type: Plans
  url: plans/vlex-plans-pricing.yml
- type: RateLimits
  url: rate-limits/vlex-rate-limits.yml
- type: FinOps
  url: finops/vlex-finops.yml
- type: IssueTracker
  url: https://github.com/vlex/remote_auth/issues
- type: AgenticAccess
  url: agentic-access/vlex-agentic-access.yml
- type: TrustCenter
  url: security/vlex-trust-center.yml
- type: DomainSecurity
  url: security/vlex-domain-security.yml
- type: Authentication
  url: authentication/vlex-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/vlex
- url: https://vlex.com/
  type: Website
- url: https://developer.vlex.com/
  type: DeveloperPortal
- url: https://developer.vlex.com/apis
  type: Reference
- url: https://vlex.com/iceberg-ai
  type: Documentation
- url: https://developer.vlex.com/use-cases
  type: UseCases
- url: https://vlex.com/integrations
  type: Integrations
- url: https://github.com/vlex
  type: GitHubOrganization
- url: https://vlex.com/products/fastcase
  type: Product
- url: https://support.vlex.com/
  type: Support
- url: https://vlex.com/news
  type: Blog
integrations:
- name: vLex
- name: vLex Custom AI Solutions
- name: BakerHostetler
- name: Ferrari
- name: Stradley Ronon
- name: Fisher Phillips
- name: Grammarly
- name: University of Oxford
- name: ABA
- name: The Florida Bar (Member Benefit)
- name: Ryanair
- name: Cuatrecasas
- name: vLex (part of Clio)
- name: LinkedIn
- name: Facebook
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

vLex API — frequently asked questions

Does vLex have an API?

Yes. APIs.io lists 6 APIs from vLex, including vLex Remote Authentication API, vLex Anonymization API and vLex Citations API, and 3 more.

Is there an OpenAPI specification for the vLex API?

Yes. APIs.io indexes 5 OpenAPI specifications for vLex, each linked for download from this page.

How do I authenticate with the vLex API?

vLex uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as vLex Authentication.

How much does the vLex API cost?

APIs.io lists 1 pricing plan for vLex, with each plan's price, limits and inclusions under Pricing on this page.

Is the vLex API ready for AI agents?

vLex has a Kin Score of 34.0 out of 100 (thin) and an Agent Readiness score of 22.1 (agent-aware), scored by API Evangelist on 2026-11-13.

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