MCP Server

MCP server for Polish court judgments via the SAOS API with verifiable citations.

Local serverstdioGo

What is the MCP MCP server?

If you already use MCP, the mcp mcp server is the piece that lets your assistant work with it directly. MCP server for Polish court judgments via the SAOS API with verifiable citations.

What the server does

Published on npm + the MCP Registry (io.github.matematicsolutions/mcp-saos). Run without cloning:

Installation

@matematicsolutions/mcp-saos on npm is all you need. Most clients run it directly, so configuration is a few lines and a restart.

Available tools

The toolset is worth reading before you wire it up, because it tells you what the integration is really for:

  • search — Full-text and filtered search (court, judge, legal basis, dates)
  • get_judgment — Full judgment by ID from SAOS
  • search_by_case — Shortcut: search by case number (e.g. "I ACa 772/13")
  • saos_cite_check — Citator: is the judgment still good law? Finds later citing judgments and scans them for overruling language near the signature

Credentials and setup notes

  • Node.js >= 18 - npm >= 9 - Internet access (live API saos.org.pl)

Worth knowing first

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Where it fits

Plenty of developer tooling servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. MCP's toolset — search, get_judgment, search_by_case and 1 more — is a fair guide to whether it matches your workflow. It is maintained by matematicsolutions; worth a glance at recent repository activity before you build anything load-bearing on it.

We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.

Available tools

ToolWhat it does
searchFull-text and filtered search (court, judge, legal basis, dates)
get_judgmentFull judgment by ID from SAOS
search_by_caseShortcut: search by case number (e.g. "I ACa 772/13")
saos_cite_checkCitator: is the judgment still good law? Finds later citing judgments and scans them for overruling language near the signature

How to install the MCP MCP server

MCP client configuration (stdio):

```json
{ "mcpServers": { "mcp-saos": { "command": "npx", "args": ["-y", "@matematicsolutions/mcp-saos"] } } }

Configuration as documented by the project. Restart the client after saving.

Configuration

  • Node.js >= 18 - npm >= 9 - Internet access (live API saos.org.pl)

Example prompts to try

  • Use MCP to search.
  • Use MCP to get judgment.
  • Use MCP to search by case.

Frequently asked questions

It connects MCP to MCP-compatible AI assistants such as Claude and Cursor, exposing 4 tools (search, get_judgment, search_by_case, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with MCP directly.