Open-source library of legal AI skills in the Anthropic Skills (SKILL.md) format, runnable by any MCP-compatible client — Claude Code, Claude Cowork, Cursor, ChatGPT, the ThomasMore desktop app. 3,500+ skills across 39 jurisdictions and 200+ practice plugins — from filing-fee calculators and case-law analysis to GDPR DPA review and US securities disclosure. Apache-2.0, contribution-friendly, no lock-in.

• What this repository is
• Quick start — connect via MCP in 30 seconds
• What a skill looks like (SKILL.md format)
• Coverage by jurisdiction
• Coverage by practice area
• Contributing a new legal AI skill
• License
• FAQ
• Related projects

A legal AI skill is a single Markdown file (SKILL.md) that describes one applied legal task — «calculate the Russian commercial-court filing fee», «analyse this case under FRCP Rule 12(b)(6)», «check this DPA against GDPR Article 28» — in a structured format an AI agent can execute deterministically.

Skills follow the Anthropic Skills convention: YAML frontmatter (machine-readable contract) + Markdown body (the algorithm). Every skill in this repository is grouped into a plugin by jurisdiction and practice area:

{country}/{practice}/skills/{slug}/SKILL.md

Allowed {country} values: any ISO 3166-1 alpha-2 code, plus general (jurisdiction-agnostic) and cross-jurisdiction (multi-country comparative).

You don't install skills locally. You connect any MCP-compatible client to the MCP server mcp.thomasmoreai.com; the orchestrator finds and runs the right skill via its discover and invoke tools.

Add to claude_desktop_config.json (or your mcp.json):

{
  "mcpServers": {
    "thomasmore-legal": {
      "url": "https://mcp.thomasmoreai.com/mcp",
      "transport": "http"
    }
  }
}

Settings → MCP → Add server → URL: https://mcp.thomasmoreai.com/mcp.

Point it at https://mcp.thomasmoreai.com/mcp (Streamable HTTP transport). Once connected, ask your agent something jurisdiction-specific, for example:

Apply the Russian commercial-court filing fee skill to a claim of 1,500,000 RUB. Review this DPA against GDPR Article 28 and EDPB Guidelines 07/2020. Check whether this US contract clause is enforceable in Delaware.

The orchestrator picks the right skill automatically.

Real example from ru/arbitration/skills/poshlina-calc/:

---
name: poshlina-calc
title: Расчёт госпошлины в арбитражный суд РФ
description: Computes the Russian commercial-court filing fee under Tax Code arts. 333.21–333.22 / 333.37.
author: ThomasMore
license: Apache-2.0
version: 0.1.0
execution_mode: open
jurisdiction: ru
practice: arbitration
language: ru
tags: [госпошлина, арбитраж, расчёт]
---

# Skill title

## When to apply
Triggers, example user prompts, what is out of scope.

## Algorithm
Step-by-step instructions for the orchestrator.

## Output contract
What the answer must contain — citations, disclaimer, structured fields.

The canonical schema is in schemas/skill-frontmatter.schema.json. See CONTRIBUTING.md for the full walkthrough.

39 jurisdictions, sorted by plugin count. Click any code to browse plugins and skills for that jurisdiction.

25 practice areas covered across the 39 jurisdictions. Top areas by plugin count:

Other covered areas: insurance, family, antitrust, healthcare, finance, environmental, construction, bankruptcy, securities, immigration.

Skills are short Markdown files — you don't need to write any code.

1. Fork the repository.
2. Add a folder {country}/{practice}/skills/{slug}/ with a SKILL.md inside.
3. If the plugin {country}/{practice}/ doesn't exist yet, also add plugin.json, CLAUDE.md, and README.md (copy from ru/arbitration/ as a reference).
4. Open a pull request. CI validates frontmatter, license, and version bump.

CI rules (enforced automatically):

• License whitelist. Apache-2.0, MIT, BSD-3-Clause, BSD-2-Clause, CC0-1.0, CC-BY-4.0. AGPL / GPL / CC-NC / CC-ND are rejected.
• execution_mode: open — required in this repository.
• Path consistency. name must match the folder name; jurisdiction and practice must match the path segments.
• Semver. Bump version on every change to SKILL.md.

Full walkthrough: CONTRIBUTING.md. Canonical schema: schemas/skill-frontmatter.schema.json.

You keep all rights to your skill and can publish it elsewhere — on Lawvable, your own repository, a private deployment — without notifying us.

Apache License 2.0. The repository, every skill in it, and every contribution to it are Apache-2.0 by default. You can use, modify, distribute, and run these skills commercially — only attribution is required.

Yes. The skills are delivered over the Model Context Protocol (MCP), which is supported by Claude Code, Claude Desktop, Cursor, ChatGPT (via MCP plugins), the ThomasMore desktop app, and any other MCP-compatible client. Point your client at https://mcp.thomasmoreai.com/mcp and the orchestrator handles discovery and routing.

The repository is community-curated. Every skill carries an explicit version, author, and license, and is reviewed against the schema before merge. Output of every skill includes a built-in disclaimer that the answer is informational and does not replace qualified legal advice. Treat the library as a second pair of eyes, not as a substitute for a lawyer admitted in the relevant jurisdiction.

Skills are versioned, testable, and citation-disciplined: each SKILL.md specifies which statutes, regulations, or cases it relies on (and which edition / date). Ad-hoc prompts drift, hallucinate citations, and aren't reproducible across team members. Skills make legal AI workflows auditable — important for compliance, conflicts checks, and post-mortems.

claude-for-legal is Anthropic's official suite of 12 legal plugins. This repository is a community-driven, jurisdictionally-tagged, much larger catalogue under the same Anthropic Skills format — the two are complementary, and a skill from either can be invoked through MCP.

If your country code (ISO 3166-1 alpha-2) is missing, just create the folder — e.g. pt/contracts/skills/... — and open a PR. See CONTRIBUTING.md.

To stay friendly to commercial deployments (in-house legal tools, paid SaaS, regulated industries). AGPL/GPL/CC-NC clauses create license friction that effectively blocks adoption in those settings, defeating the purpose of an open skill library.

The orchestrator that serves these skills (mcp.thomasmoreai.com) is a ThomasMore-operated service; the skills themselves in this repository are fully open-source (Apache-2.0). You can run any skill against your own orchestrator implementation — SKILL.md is just a Markdown file.

• Anthropic Skills — the underlying SKILL.md format.
• Model Context Protocol — the open protocol every MCP-compatible client speaks.
• anthropics/claude-for-legal — Anthropic's official suite of legal plugins.
• travisvn/awesome-claude-skills — curated list of Claude Skills resources.
• Vaquill-AI/awesome-legaltech — open-source legal-tech catalogue.
• wong2/awesome-mcp-servers — curated list of MCP servers.

Maintained by ThomasMoreAI. Issues and pull requests welcome.