Ris

RIS MCP Server

[CI] [npm version] [License: MIT] [Node.js] [MCP] [MCP Registry]

An MCP (Model Context Protocol) server that gives AI assistants access to Austria's official legal database — the Rechtsinformationssystem (RIS).

Ask your AI assistant about Austrian law, and it will search and retrieve legal documents directly from the official government API. No API key required.

What You Can Do

Once connected, you can ask your AI assistant things like:

"What does Austrian law say about tenancy rights?"

"Find Constitutional Court decisions on freedom of expression."

"Show me §1295 of the ABGB (Austrian Civil Code)."

"What laws about climate protection were published in 2024?"

"Look up the building code for the province of Salzburg."

"Get the full text of document NOR40052761."

The server translates these natural language requests into structured API calls against the RIS Open Government Data API.

Features

• 13 specialized tools covering all major RIS collections
• Federal law (ABGB, StGB, UGB, ...) and state law for all 9 provinces
• Court decisions from 16 court types (Supreme Court, Constitutional Court, Administrative Court, ...)
• Law gazettes — Federal (BGBl) and state (LGBl)
• Government bills, ministerial decrees, cabinet protocols
• Full document retrieval with smart prefix-based routing
• Change history tracking across 36 application types
• Interactive result list (MCP Apps) in hosts that support it — with a full text answer everywhere else
• Markdown and JSON output formats
• Free and open — uses Austria's Open Government Data API, no API key needed

Quick Start

Run directly without installation:

pnpm dlx ris-mcp-ts

Or install globally:

pnpm add -g ris-mcp-ts

Configuration

Claude Desktop

Add to your Claude Desktop config (Settings > Developer > Edit Config):

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json

{  "mcpServers": {    "ris": {      "command": "npx",      "args": ["-y", "ris-mcp-ts"]    }  }}

Note: The "Add custom connector" UI in Claude Desktop only supports remote MCP servers (HTTP/SSE). Local stdio servers like this one must be configured via the JSON file.

Tip: You can also use pnpm dlx instead of npx in all configuration examples if you prefer pnpm.

Claude Code

Add to your project or user settings:

claude mcp add ris -- npx -y ris-mcp-ts

VS Code (GitHub Copilot)

Add to .vscode/mcp.json in your project:

{  "servers": {    "ris": {      "type": "stdio",      "command": "npx",      "args": ["-y", "ris-mcp-ts"]    }  }}

Cursor

Add to .cursor/mcp.json in your project (or ~/.cursor/mcp.json for global access):

{  "mcpServers": {    "ris": {      "command": "npx",      "args": ["-y", "ris-mcp-ts"]    }  }}

Windsurf

Add to your Windsurf MCP config at ~/.codeium/windsurf/mcp_config.json:

{  "mcpServers": {    "ris": {      "command": "npx",      "args": ["-y", "ris-mcp-ts"]    }  }}

Other MCP Clients

Any MCP-compatible client can connect via stdio transport:

npx -y ris-mcp-ts# or: pnpm dlx ris-mcp-ts

Available Tools

Interactive Result List

One widget, all eleven search tools. There is a single interactive result list, and every search tool renders into it: federal law, state law, case law, the federal and state law gazettes, government bills, district authority announcements, municipal law, the miscellaneous collections, change history and the ordinance gazettes. The screenshots below are the same widget in two different hosts, not two different features.

ris_dokument opens a reader instead. A single document can run to a quarter of a million characters, far past what one answer may carry, so the viewer loads it section by section as you scroll, offers an outline to jump by where the document has one, and links back into RIS. The full text still reaches the chat either way — the widget is never the only copy.

Hosts that support the MCP Apps extension render the hits as an interactive list — page through results without retyping the search, open a document in the browser, or request its full text with one click. The widget follows the host's light or dark theme; the shots below show both.

[Case law search for 'Verjährung' in the light theme: 7,466 hits, with court, decision date and case number on the expanded result, the actions 'Im RIS öffnen', 'PDF' and 'Volltext in den Chat', and pagination controls at the bottom.]
The expanded detail view, light theme — metadata, the three actions, and pagination

Example Prompts

RIS is a German-language database, so these work best in German. Each of these lands on a different tool:

"Zeig mir das Verbrauchergewährleistungsgesetz" — ris_bundesrecht

"Finde aktuelle OGH-Rechtsprechung zu Verjährung" — ris_judikatur

"Was steht im Tiroler Landesrecht zum Naturschutz?" — ris_landesrecht

"Zeig mir BGBl. I Nr. 175/2021" — ris_bundesgesetzblatt

In a host without MCP Apps support the same prompts return the full text answer instead — see the table below.

The chat answer is always complete. The widgets are an addition to it, never a replacement — a host that does not render them loses nothing.

Tool Reference

Result size

The text block of every tool is capped at 25,000 characters. The search tools' structuredContent has its own budget of 45,000 characters (serialized); a page that would exceed it is delivered at the next smaller RIS page size (100 → 50 → 20 → 10) with page, page_size, has_more and the query echo rewritten to that size and a German notice in both the text and the payload. Page with query.limit and query.seite as echoed. Prefer limit: 20; 50 suits a broad survey; 100 is only ever delivered when the hits are small. The default is calibrated to Claude Code, which rejects a result whose structured payload exceeds 25,000 tokens (measured: rejected at 58,659 characters, accepted at 46,311; the margin below that covers content that tokenizes worse); claude.ai renders far larger payloads and needs no budget. Self-hosters whose client accepts larger results can raise the budget with the RIS_STRUCTURED_CONTENT_BUDGET environment variable (a positive integer).

Development

Prerequisites

• Node.js >= 20.19.0 (required by the Vite 7 widget build)

Setup

git clone https://github.com/Honeyfield-Org/ris-mcp-ts.gitcd ris-mcp-tspnpm installpnpm run build

Scripts

Project Structure

src/├── index.ts           # Entry point (stdio transport)├── server.ts          # MCP server setup, delegates to tools/├── client.ts          # HTTP client for RIS API├── types.ts           # Zod schemas + TypeScript types├── parser.ts          # JSON parsing and response normalization├── formatting.ts      # Output formatting (markdown/json)├── helpers.ts         # Shared helper functions├── constants.ts       # Static mappings and configuration├── widgets.ts         # MCP Apps widget resource + tool metadata├── tools/             # One file per tool handler│   ├── index.ts│   ├── bundesrecht.ts│   ├── landesrecht.ts│   ├── judikatur.ts│   └── ...└── __tests__/         # Unit and integration tests
ui/                    # Widget sources (browser code, built by Vite)├── trefferliste/      # The result-list widget└── shared/            # Host bridge, shared states and theme

Contributing

See CONTRIBUTING.md for guidelines.

License

MIT

Built on the Open Government Data API provided by the Austrian Federal Chancellery (Bundeskanzleramt).