Acquis MCP Server

Acquis — Verified EU Law for AI assistants

Acquis gives Claude, ChatGPT and any MCP-enabled assistant exact, verifiable access to EU digital regulation. Instead of paraphrasing from training data, your assistant quotes the verbatim provision of the current consolidation — with the full citation (act, article, paragraph, point), its in-force status, the consolidation date and a deep link to EUR-Lex, so you can check every claim yourself.

The verbatim legal text is rendered from a signed corpus — it is not written by the model. Every fragment is content-hashed and ed25519-signed at ingestion, and any citation can be cryptographically verified.

• 🌐 Web app + connector, one subscription: https://acquislaw.com
• 🔌 Remote MCP endpoint: https://api.acquislaw.com/mcp
• 📚 Docs: https://acquislaw.com/docs

This repository documents the public MCP endpoint. The hosted service, its source code and its data products are proprietary and governed by the terms at acquislaw.com — only the contents of this repository are MIT-licensed (see LICENSE).

Corpus

The EU digital rulebook, all consolidated and updated by daily sweeps of the official EUR-Lex/CELLAR catalog (new consolidations, corrigenda, status changes):

EDPB guidelines are next. Need a corpus that isn't here? New corpora are a matter of hours — ask at capy@acquislaw.com.

Tools

Five read-only tools:

Install

Acquis is a remote server. Authentication is OAuth 2.1 (an account is created in-flow, with a 7-day Pro trial, no card).

Claude (Desktop / claude.ai / Code)

Add a custom connector pointing at the remote URL:

https://api.acquislaw.com/mcp

In claude.ai → Settings → Connectors → Add custom connector, paste the URL and complete the sign-in screen.

Cursor, Cline, VS Code and other MCP clients (stdio via the shim)

Clients that speak stdio can reach the remote server through the mcp-remote adapter, which also carries the OAuth flow:

{
  "mcpServers": {
    "acquis": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://api.acquislaw.com/mcp"]
    }
  }
}

Inspecting the tools without an account

/mcp is OAuth-protected, so an unauthenticated probe gets a 401 (that challenge is what starts the sign-in flow). To let any client or directory read the tool catalog without an account, there is a public introspection endpoint:

https://api.acquislaw.com/mcp/public

It advertises the same five tool definitions and returns no legal content — every call points you back at the real endpoint. Use it to inspect the server; use /mcp for answers.

Example

Prompt: "What does Article 6 of the AI Act say about high-risk classification? Then verify that citation."

get_provision(act: "AI Act", article: "6") returns the eight paragraphs of Article 6 verbatim, each with its EUR-Lex link; verify_fragment then recomputes the content hash and confirms the ed25519 signing provenance.

More in examples/.

Not legal advice

Acquis returns official sources verbatim with citations. It is a retrieval layer with provenance — not legal advice. Built by Capybara Labs on HIVE, our verifiable knowledge engine.