Yes, Regai Legal is free to use.

How do I install Regai Legal?

Regai Legal is a remote plugin. You do not need to install anything locally. Add the server URL to your AI app's MCP configuration and you are ready to go.

Is Regai Legal safe to use?

Yes. Regai Legal passed MCP Marketplace's automated security scan with a score of 10/10 (low risk). Every server on MCP Marketplace is security-scanned before it's listed; see the full security report on this page for the findings and permissions.

What AI apps work with Regai Legal?

Regai Legal uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

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Regai Legal MCP Server

by RegAI Tw

Developer ToolsLow Risk10.0MCP RegistryRemote

Free

Server data from the Official MCP Registry

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

About

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

Remote endpoints: streamable-http: https://mcp.regai.tw/mcp

Security Report

10.0

Low Risk10.0Low Risk

Valid MCP server (1 strong, 1 medium validity signals). No known CVEs in dependencies. Imported from the Official MCP Registry.

Endpoint verified · Requires authentication · 1 issue found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Found in Source Code

Found by scanning the linked source code. This listing connects to a hosted endpoint, so none of this runs on your machine: it describes what the server software does where it is hosted.

HTTP Network Access

Connects to external APIs or services over the internet.

How to Connect

Remote Plugin

No local installation needed. Your AI client connects to the remote endpoint directly.

Add this to your MCP configuration to connect:

{
  "mcpServers": {
    "tw-regai-legal": {
      "url": "https://mcp.regai.tw/mcp"
    }
  }
}

Documentation

View on GitHub

From the project's GitHub README.

RegAI Legal MCP

English · 繁體中文

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.

Endpoint: https://mcp.regai.tw/mcp (Streamable HTTP)
Website and setup guide: https://regai.tw/mcp
Security: https://regai.tw/mcp/security
Operated by: RegAI.tw

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.

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

Contact: https://regai.tw/contact · service@regai.tw
Problems with these docs: open an issue in this repository.

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.

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