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RegAI Legal MCP

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RegAI Legal MCP

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Taiwan law and court decisions for your AI assistant: statutes, articles and rulings, read-only.

RegAI Legal MCP is a hosted Model Context Protocol server that gives AI assistants such as Claude and ChatGPT grounded access to Taiwan's laws and court decisions. Your assistant can search statutes by concept or keyword, fetch an article by number (with the official English translation where one exists), browse a law's structure, search apex-court decisions and Grand Chamber (大法庭) rulings, and list every decision that contains an exact phrase.

This repository holds the public documentation, the registry metadata (server.json) and examples. The server itself is a hosted service; its source code is not published here.

Tools

Tool

What it does

search_law

Search law articles by legal concept, keyword or article reference

search_law_titles

Resolve a full or partial law name to the official name(s)

get_article_by_number

Exact text of one article by law name + number (optionally the official English)

get_law_hierarchy

Chapter / section / article outline of one law

get_law_details

Full text of an entire law, as Markdown

search_decisions

Search court decisions by concept, fact pattern or keyword, ranked by relevance

search_decisions_exact

List every decision containing literal phrase(s), with the exact total

get_decision_details

Full text of one decision by its id (jid)

search_grand_chamber_decisions

Search Grand Chamber (大法庭) rulings that resolve divergent interpretations

Full parameters and examples: docs/tools.md.

All tools are read-only (annotated readOnlyHint: true) and query only public legal data. Queries and law names are in Traditional Chinese; your assistant translates for you if you ask in English.

Related MCP server: mcp-taiwan-legal-db

Data

  • Laws and regulations: Taiwan's Ministry of Justice national law database (全國法規資料庫), including each law's effective status and pending amendments.

  • Court decisions: an apex-tier subset of Judicial Yuan decisions: the Supreme Court, Supreme Administrative Court, Constitutional Court, Disciplinary Court and Intellectual Property and Commercial Court, plus Grand Chamber rulings. District and high court decisions are not included.

The data is updated periodically from the official sources. RegAI is not affiliated with the Ministry of Justice or the Judicial Yuan. Results are for research and are not legal advice.

Get started

RegAI MCP supports OAuth (OAuth 2.1, the MCP authorization standard built on OAuth 2.0), so the recommended way to connect is to sign in with your RegAI account. No API key needed.

Sign in with OAuth (recommended). Add a custom connector in your AI assistant with just https://mcp.regai.tw/mcp. The assistant opens RegAI's sign-in page (OAuth); sign in with your RegAI account (free; email code or LINE) and click Allow. Confirmed with Claude (web, Desktop, Claude Code), ChatGPT and Goose.

In Claude Code, one command (you sign in on first use):

claude mcp add --transport http regai https://mcp.regai.tw/mcp

Or use an API key, for apps without sign-in support: copy your key from your account page and send it either

  • as a header: Authorization: Bearer YOUR_KEY, or

  • in the URL, for apps that only take a URL: https://mcp.regai.tw/mcp?key=YOUR_KEY

Step-by-step instructions for each app: examples/clients.md and https://regai.tw/mcp.

Then just ask, for example: 「民法第 184 條的內容是什麼？」 or "What does Taiwan's Civil Code say about tort liability? Cite the article." More in examples/prompts.md.

Plans and limits

Free

MCP Pro

Calls per month

500

3,000

Burst

20, refills 5 per hour

60, refills 1 per minute

Card required

No

Yes

Connecting and listing tools are free; each tool call counts as one call. Current prices: https://regai.tw/pricing

Security and privacy

Read-only tools over public data only. Sign-in follows the MCP authorization spec (OAuth 2.1 with PKCE); access tokens last 1 hour and refresh tokens rotate on every use, and you can disconnect any app under "Connected apps" on your account page. API keys are matched by their hash (and stored encrypted so you can view yours again); you can regenerate or revoke your key at any time. We don't log the content of your queries, only a keyed fingerprint for troubleshooting. Details: SECURITY.md and https://regai.tw/mcp/security. Privacy policy: https://regai.tw/privacy.

Support

License

Documentation and examples in this repository are licensed under CC BY 4.0. The RegAI service is provided under the RegAI Terms.

Claude is a trademark of Anthropic, ChatGPT of OpenAI; other product names belong to their owners. They are mentioned only to describe compatibility.

This server cannot be deployed

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Maintenance

ActivityMaintained
ResponsivenessNo issues

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