LawDiver

LawDiver is a free legal research platform offering a Westlaw and Lexis alternative. It provides access to over 10 million U.S. court opinions, more than 1,300 United States treaties, and over 8,000 pattern jury instructions. Users can search cases, check citations, and retrieve full-text PDFs without login. The service includes a public API (v1) for programmatic access to case search and citation resolution, licensed for any commercial purpose.

LawDiver is listed with 1 API on the APIs.io network. Tagged areas include Company, LegalTech, LegalResearch, API, and Free.

The LawDiver catalog on APIs.io includes 1 Spectral governance ruleset.

LawDiver’s developer surface includes authentication, documentation, API reference, getting-started guide, support, engineering blog, pricing, and 16 more developer resources.

🌐 Visit website📡 Profile data on GitHub
33.0/100 thin Agent 27/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →
1 API 1 MCP Servers
CompanyLegalTechLegalResearchAPIFree

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0
Composite quality — 33.0/100 · thin
Contract Quality 0.0 / 21
Developer Ergonomics 9.7 / 17
Access Clarity 7.6 / 17
Operational Transparency 1.2 / 11
Contract Governance 1.6 / 10
Discoverability 5.5 / 9
Regulatory Posture 5.1 / 15
Agent readiness — 27/100 · agent aware
Machine-Readable Contract 0 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 0 / 6
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 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 6 / 6
Protected Resource Metadata 5 / 5
Registration Without a Human 6 / 6
Agentic Commerce Well-Known Document 0 / 5
Pagination 5 / 5
Distinct Operations 3 / 3
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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Show this score on your site. Kin Score badge preview for LawDiver It updates itself when the score changes. Paste this where you link to your API docs: 
<a href="https://apis.io/providers/lawdiver-com/"><img src="https://apis.io/badge/lawdiver-com/card.svg" alt="LawDiver on APIs.io — Kin Score by API Evangelist"></a>
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Raise your score.
Agent readiness — checks not met, largest first (exact, from this profile):
  • Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
  • 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)
  • A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
  • Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
  • Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
  • Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
6 more unmet checks in the Agent Readiness table above.
Kin Score — facets with the most composite points still available (weight × headroom):
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.
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/lawdiver-com/apis.yml: open an issue on github.com/api-evangelist/lawdiver-com 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 →

APIs 1

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

LawDiver API

LawDiver API v1 provides case search, citation resolution, and other legal research endpoints.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

LawDiver MCP Server

Remote MCP server at lawdiver.com requiring an API key.

MCP SERVER

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

LawDiver API Rules

8 rules · 7 errors 1 info

SPECTRAL

Security Posture 2

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

Lawdiver Com Authentication

4 schemes

SECURITY

Lawdiver Com Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Lawdiver Com Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Lawdiver Com Agentic Access

12 operations · 6 acting

12 operations · 6 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

Login
Login
 DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 LLMsTxt
LLMsTxt
 MCPServer
MCPServer
 WellKnown
WellKnown

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Spectral
Spectral
 ErrorCatalog
ErrorCatalog
 Conformance
Conformance

Access & Security 3

Authentication, authorization, and security posture

Authentication
Authentication
 Security
Security
 DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support
Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Other 2

Properties that don't map to a standard resource type

Hosts
Hosts
 Vendors
Vendors

Source (apis.yml)

apis.yml Raw ↑ 
aid: lawdiver-com
name: LawDiver
description: LawDiver is a free legal research platform offering a Westlaw and Lexis alternative. It provides access to over
  10 million U.S. court opinions, more than 1,300 United States treaties, and over 8,000 pattern jury instructions. Users
  can search cases, check citations, and retrieve full-text PDFs without login. The service includes a public API (v1) for
  programmatic access to case search and citation resolution, licensed for any commercial purpose.
url: https://artifacts.apis.io/lawdiver-com/apis.yml
image: https://lawdiver.com/logo.png
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-29 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-29'
modified: '2026-10-29'
tags:
- Company
- LegalTech
- LegalResearch
- API
- Free
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/lawdiver-com-agentic-access.yml
- type: Spectral
  url: rules/lawdiver-com-rules.yml
- type: Authentication
  url: authentication/lawdiver-com-authentication.yml
- type: ErrorCatalog
  url: errors/lawdiver-com-problem-types.yml
- type: Conformance
  url: conformance/lawdiver-com-conformance.yml
- type: LLMsTxt
  url: llms/lawdiver-com-llms.txt
- type: MCPServer
  url: mcp/lawdiver-com-mcp.yml
- type: WellKnown
  url: well-known/lawdiver-com-well-known.yml
- type: Hosts
  url: hosts/lawdiver-com-hosts.yml
- type: Vendors
  url: vendors/lawdiver-com-vendors.yml
- type: Security
  url: https://lawdiver.com/security
- type: Login
  url: https://lawdiver.com/login
- type: DomainSecurity
  url: security/lawdiver-com-domain-security.yml
- type: Website
  url: https://lawdiver.com
- type: DeveloperPortal
  url: https://lawdiver.com/docs/api
- type: Documentation
  url: https://lawdiver.com/docs/api
- type: APIReference
  url: https://lawdiver.com/docs/api
- type: GettingStarted
  url: https://lawdiver.com/docs/api#getting-started
- type: Support
  url: https://lawdiver.com/support
- type: Blog
  url: https://lawdiver.com/blog
- type: Pricing
  url: https://lawdiver.com/pricing
- type: TermsOfService
  url: https://lawdiver.com/terms
- type: PrivacyPolicy
  url: https://lawdiver.com/privacy
apis:
- aid: lawdiver-com:lawdiver-api
  name: LawDiver API
  description: LawDiver API v1 provides case search, citation resolution, and other legal research endpoints.
  humanURL: https://lawdiver.com/docs/api
  baseURL: https://lawdiver.com/api/v1
  properties:
  - type: Documentation
    url: https://lawdiver.com/docs/api
  - type: APIReference
    url: https://lawdiver.com/docs/api
x-submission-notes: REST api/v1 (case search, jurisdictions, citations), key auth, MCP; docs /docs/api
x-coverage:
  state: gated
  reason: partner-login
  method: derived
  generated: '2026-10-29'
  generator: derive-coverage.py (pre-flight evidence)
  detail: the company serves an API surface but requires credentials before any description of it can be read
  evidence:
  - url: https://lawdiver.com/v1/openapi.json
    status: null
  - url: https://bazaar.lawdiver.com/v1/openapi.json
    status: null
  - url: https://enterprise.lawdiver.com/v1/openapi.json
    status: null
  - url: https://lawdiver.com/mcp
    status: 401
  - url: https://bazaar.lawdiver.com/mcp
    status: 401
  - url: https://enterprise.lawdiver.com/mcp
    status: 401
x-enrichment:
  date: '2026-10-29'
  status: enriched
  artifacts_added: 29
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

LawDiver API — frequently asked questions

Does LawDiver have an API?

Yes. APIs.io lists 1 API from LawDiver, including LawDiver API.

How do I authenticate with the LawDiver API?

LawDiver documents its authentication (4 schemes). The details are profiled on APIs.io as Lawdiver Com Authentication.

Does LawDiver have an MCP server?

Yes. APIs.io lists 1 MCP server for LawDiver: Remote MCP server at lawdiver.com requiring an API key.

Is the LawDiver API ready for AI agents?

LawDiver has a Kin Score of 33.0 out of 100 (thin) and an Agent Readiness score of 26.8 (agent-aware), scored by API Evangelist on 2026-10-31.

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  • get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
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