RegAI Docs › MCP
What is RegAI MCP
MCP (Model Context Protocol) is how AI assistants connect to outside data. Once RegAI MCP is connected, the AI assistant you already use, such as Claude or ChatGPT, can look up RegAI's legal database while it answers: statutes, court decisions, the Council of Grand Justices Interpretations (釋字) and Constitutional Court judgments (憲判字).
For the full introduction, the server address and setup for each assistant, see the RegAI MCP page.
Who can use it
- You need a RegAI account; Free members get the free tier.
- RegAI Pro includes MCP Pro. If you only want it in your AI assistant, you can also subscribe to MCP Pro on its own.
- For each plan's allowance, see Pricing.
Note: MCP Pro covers MCP only, not RegAI's paid website features.
Ways to connect
| Way | For | How |
|---|---|---|
| Sign-in (OAuth, recommended) | Claude, ChatGPT, Goose and other assistants that support sign-in | Add RegAI in the assistant, sign in to RegAI and click Allow; no key needed |
| API key | Assistants without sign-in support | Create a key in Account settings and enter it in the assistant's MCP settings |
Once connected
Just ask your assistant, for example "What does Article 184 of the Civil Code say?". The assistant decides when to look things up in RegAI and cites the articles and decisions it found; if your assistant doesn't look things up in RegAI by itself, you can also tell it to in your question.
Tip: RegAI MCP only searches public laws and court decisions; it never reads or changes the chats and documents in your RegAI account. Answers come from the AI assistant you use, so check what it cites.