uk-case-law-mcp-server

Provides an MCP (Model Context Protocol) server exposing tools to search and retrieve UK case law from The National Archives (TNA) Find Case Law API, including support for pagination and fetching full judgments with optional paragraph ranges and metadata.

Evaluated Mar 30, 2026 (21d ago)

Homepage ↗ Repo ↗ Search mcp model-context-protocol legal-ai case-law uk-law national-archives research

⚙ Agent Friendliness

/ 100

Can an agent use this?

🔒 Security

/ 100

Is it safe for agents?

⚡ Reliability

/ 100

Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality

Documentation

Error Messages

Auth Simplicity

Rate Limits

🔒 Security

TLS Enforcement

Auth Strength

Scope Granularity

Dep. Hygiene

Secret Handling

No authentication is documented for TNA (and none for the MCP server). If the MCP server is reachable over a network, lack of auth can be a risk. TLS usage for the MCP transport is not described. Dependencies are limited as shown in manifest (no CVE/status provided).

⚡ Reliability

Uptime/SLA

Version Stability

Breaking Changes

Error Recovery

Best When

You want LLM tool access to authoritative UK case law text (2003+) with structured search + retrieval, and you can run the MCP server alongside your agent workflow.

Avoid When

You need authenticated/enterprise-controlled access to a private dataset, or you require strong guarantees about error handling/retry semantics that are not evidenced in the provided materials.

Use Cases

• Ask an LLM to search UK case law by keywords, court, legal area, and year range
• Retrieve full text judgments for a given neutral citation or document URI
• Extract relevant paragraphs by citation and paragraph range
• Generate citations/quotations from official case text retrieved via TNA

Not For

• Use as a standalone legal authority/verdict generator without verification
• Bulk ingestion at very high rates without coordinating with TNA usage limits
• Environments requiring paid/commercial licensing of the tool as provided

Interface

REST API

GraphQL

gRPC

MCP Server

Yes

SDK

Webhooks

Authentication

OAuth: No Scopes: No

README states the underlying TNA Find Case Law API requires no authentication. MCP server itself is described as locally run via Bun/Claude Desktop config (no auth mechanism documented).

Pricing

Free tier: No

Requires CC: No

No pricing for the MCP server is provided; licensing is PolyForm Noncommercial 1.0.0 as stated in README.

Agent Metadata

Pagination

page/limit

Idempotent

False

Retry Guidance

Not documented

Known Gotchas

⚠ No MCP server deployment/auth details are provided; if exposed remotely, access control is not described.
⚠ TNA rate limiting is mentioned, but retry/backoff behavior is not documented in the provided materials.
⚠ Results are limited (limit 1-50) and pagination requires using page parameters correctly.

Alternatives

Directly call the TNA Find Case Law API from your own code Build a lightweight MCP wrapper around the TNA API Use other legal research APIs or datasets that provide authenticated access and tighter SLAs

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Scores are editorial opinions as of 2026-03-30.