MCP Nsa

Name: MCP Nsa
Author: matematicsolutions

by matematicsolutionsversion 1.4.0i★ –iRuns on your computer

Registry nameio.github.matematicsolutions/mcp-nsa

Install

Overview

Description from the maker (original English)

MCP server for Polish administrative court rulings (NSA/WSA) via CBOSA with citations.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Other

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
The registry lists no key to fill in.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

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

Run this in your terminal

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

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

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

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "nsa": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@matematicsolutions/mcp-nsa"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account matematicsolutions, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 32684 servers in this category
Published to the registry more recently than 61% of the other 32684 servers in this category
Basic checks equal to or better than 100% of the other 32684 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is MCP Nsa safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.4.0) reached the registry 24 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Master CSS

Alternatives

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

mcp-nsa

Installation (one command)

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

npx -y @matematicsolutions/mcp-nsa

MCP client configuration (stdio):

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

(Building from source - below.)

MCP server for the case law of the Polish administrative courts - Naczelny Sad Administracyjny / NSA (Supreme Administrative Court) + 16 Wojewodzkie Sady Administracyjne / WSA (regional administrative courts) - via CBOSA (Centralna Baza Orzeczen Sadow Administracyjnych - the administrative courts' central case-law database) (orzeczenia.nsa.gov.pl).

Why

SAOS (the common-courts case-law analysis system) does not index the administrative courts. Yet that is exactly where the substantive case law lives:

GDPR / data protection - decisions of the President of UODO appealed to the WSA, cassation appeals to the NSA
Taxes - individual tax rulings, decisions of tax authorities
Customs and excise
Administrative permits, concessions
Review of public-administration activity

mcp-nsa closes this gap. Coverage: 2,390,000+ rulings (verified live 2026-07-08 across the full date range), from 1981 to today.

Tools

`search(query, caseNumber?, court?, dateFrom?, dateTo?, pageNumber?)`
search by keyword, case number, court, date. Fetches the top 5 full rulings (case number, court, date, panel, keywords, legal basis, excerpt).
`get_judgment(doc_id)` - full ruling by 10-character hex doc_id (from the CBOSA URL, e.g. 7E50984BB7).
`search_by_case(caseNumber)` - shortcut: search by case number (e.g. III OSK 1377/23, I SA/Gl 659/22).

Every response contains structuredContent.citations with the fields: title, url (CBOSA), case_number, court, judgment_date, decision_type, snippet, doc_id. Patron reads this field automatically and surfaces it in the UI panel as the section "Rulings from CBOSA (NSA / WSA - administrative courts)".

Stack

Node 18+
@modelcontextprotocol/sdk
Stdio transport
https + regex HTML parser (zero external deps beyond the SDK)
500 ms throttle between requests (2 req/s)
SSL: rejectUnauthorized: false - the CBOSA chain is sometimes incomplete on some machines; public rulings, no PII, MITM risk negligible against the benefit. See: LDH issue #167.

Build + run

npm install

npm run build node dist/index.js # starts the server on stdio

Wiring into Patron

In patron/backend/mcp-servers.json (alongside mcp-saos and mcp-eu-sparql):

"name": "nsa", "transport": "stdio", "command": "node", "args": ["C:/Users/ /mcp-nsa/dist/index.js"], "enabled": true }

Smoke test

echo '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2024-11-05","capabilities":{},"clientInfo":{"name":"s","version":"0"}}}

{"jsonrpc":"2.0","method":"notifications/initialized"} {"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"search","arguments":{"query":"RODO art 6"}}}' \ | node dist/index.js

Should return ~1500 hits + the top 5 with Polish NSA/WSA case numbers + CBOSA URLs

structuredContent.citations.

Lineage

Implementation rewritten in TypeScript on the basis of the HTTP/HTML contract from legal-data-hunter/sources/PL/NSA (Python + BeautifulSoup, MIT). It does not import the source code - it reproduces the query pattern and HTML parsing.

License

MIT.

Part of MateMatic

This connector queries its source live. It is one of the Polish and EU source connectors bundled in PATRON and works with any MCP client.

Poland, one server for all sources: prawo-pl-mcp · each source on its own: mcp-saos · mcp-nsa (this repo) · mcp-isap · mcp-krs · mcp-eureka · kio-orzeczenia-mcp
European Union: mcp-eu-sparql (live) · mcp-eu-compliance (offline corpus)
A prepared corpus of Polish and EU law with a citation graph: Repertorium

mcp-saos, mcp-nsa, mcp-isap, mcp-krs and mcp-eu-sparql share one structuredContent.citations contract: each tool returns an array of {title, url, snippet?, ...metadata} that legal agents can render directly in their citation panel.

See matematicsolutions/.github for the full org profile.

MCP Nsa

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Master CSS

README from the maker

mcp-nsa

Installation (one command)

Why

Tools

Stack

Build + run

Wiring into Patron

Smoke test

Lineage

License

Part of MateMatic