Legal Skills (Open)

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.

Table of contents

• 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

What this repository is — an open-source legal AI skill library

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.

Quick start — connect via MCP in 30 seconds

Claude Desktop / Claude Code

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

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

Cursor

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

Any other Model Context Protocol client

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.

What a skill looks like (SKILL.md format)

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.

Coverage by jurisdiction

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

Coverage by practice area

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.

Contributing a new legal AI skill

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.

License

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.

FAQ

Can I use these skills with Claude, Cursor, ChatGPT, or other clients?

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.

Are these skills production-ready?

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.

Why not just write a prompt myself?

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.

What's the difference between this repo and Anthropic's claude-for-legal?

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.

How do I add a skill for my jurisdiction?

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.

Why Apache-2.0 only? Why are AGPL / GPL / CC-NC rejected?

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.

Is the orchestrator open-source too?

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.

Related projects

• 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.