Saos MCP Server

Published on npm + the MCP Registry (io.github.matematicsolutions/mcp-saos). It runs locally over stdio via the published package.

People connecting API integration tools to Claude, Cursor, VS Code, or another MCP client. The project is written in JavaScript.

VERIFIED ACTIVE

LAST COMMIT 2026-08-03 · ★ 2 · #110 OF 250 MAINTAINED API INTEGRATION · VERIFIED 2026-08-25

MIT · JavaScript servers · how we verify → /methodology

01 · Install Saos

Claude Code

claude mcp add matematicsolutions-mcp-saos -- npx -y @matematicsolutions/mcp-saos

Claude Desktop / Cursor / VS Code - add to config

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

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

npm package @matematicsolutions/mcp-saos - published under the repo owner's npm scope (@matematicsolutions)

registry namespace io.github.matematicsolutions is GitHub-verified and matches the repo owner

03 · What Saos can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Limitations (from the README)

- pageSize has a hard lower limit of 10 (SAOS returns HTTP 400 for less) - the server automatically enforces a minimum of 10. - courtType=ADMINISTRATIVE returns empty results - SAOS does not index WSA/NSA. - Dates in the database may contain OCR artifacts (e.g. "3013-12-04") - the case number is more reliable than the judgmentDate field. - Coverage is uneven by court type - the server states the relevant caveats in e

Latest releases

v1.1.0 · 2026-05-25

Retrofit do kanonu MCP MateMatic (pattern z dograh-hq/dograh v1.31.0, BSD-2 via mcp-eu-compliance v0.2.0). Backward-compatible. · Added · instructions w Server (procedural orchestration: kolejnosc wywolan, twarde…

v1.0.0 · 2026-05-20

Polish judgments connector via SAOS API. 3 tools: search, get_judgment, search_by_case. Each result emits structuredContent.citations with case_number, court, date, URL. · Node 18+, @modelcontextprotocol/sdk, stdio…

04 · Who maintains Saos

mcp-saos is maintained by matematicsolutions. We track 44 MCP servers from matematicsolutions - 44 actively maintained, 11 combined GitHub stars, oldest repo from May 2026.

05 · Facts

repository: github.com/matematicsolutions/mcp-saos
category: API integration - ranked #110 of 250 actively-maintained API integration servers as of 2026-08-25.
registry: io.github.matematicsolutions/mcp-saos (active, first published 2026-06-25 · 3 versions)
packages: npm:@matematicsolutions/mcp-saos

06 · Saos FAQ

What is Saos?

Published on npm + the MCP Registry (io.github.matematicsolutions/mcp-saos). It runs locally over stdio via the published package.

Is Saos still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-03. We re-verify nightly.

How do I install Saos?

Run `npx -y @matematicsolutions/mcp-saos`. You can also paste the ready-made client config above.

Does Saos run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Saos

Alternatives to Saos

Maintained API integration servers if Saos isn't the fit.

More API integration MCP servers · Apimesh · DataJud (CNJ) · Wayback Machine · Embedded / IoT Mentor

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