Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/matematicsolutions/mcp-krs/agents-mdgit clone --depth 1 https://github.com/matematicsolutions/mcp-krsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/matematicsolutions/mcp-krs/agents-md)<a href="https://agentmods.dev/instructions/matematicsolutions/mcp-krs/agents-md"><img src="https://agentmods.dev/badge/instructions/matematicsolutions/mcp-krs/agents-md.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00952 | $0.00952 |
| Opus 5 | $0.00476 | $0.00476 |
| Sonnet 5 | $0.00190 | $0.00190 |
| Haiku 4.5 | $0.00095 | $0.00095 |
Grade A, and why
mcp-krs AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md - mcp-krs
An agents.md standard file (Linux Foundation / Agentic AI Foundation) - canonical instructions for AI agents working with this repository. Read natively by Cursor, Codex (OpenAI), Jules (Google), Devin / Windsurf, Aider, Amp, Factory, GitHub Copilot.
Project goal
An MCP (Model Context Protocol) server for the Krajowy Rejestr Sadowy / KRS (National Court Register) - via the official, free API of the Ministerstwo Sprawiedliwosci (Ministry of Justice) (api.krs.ms.gov.pl).
One of the 5 MateMatic Polish-law connectors (mcp-saos, mcp-nsa, mcp-isap, mcp-krs (this one), mcp-eu-sparql).
MateMatic context (HARD CONSTRAINTS)
The repo is maintained by MateMatic Solutions.
- KRS data is public but GDPR applies when combining it with other data (board = natural persons).
- Every tool call MUST return
structuredContent.citationswith: the KRS number, extract date, canonical URL (krs.ms.gov.pl). - Stateless - no cache.
- Current register or full historical only - every extract has a snapshot date that must be in the citation. An outdated KRS = risk of a factual error.
MCP tools (tools contract)
| Tool | Key parameters | Returns |
|---|---|---|
get_entity |
krs_number |
current extract: name, NIP, REGON, status, share capital + citations |
get_entity_full |
krs_number |
full historical extract (all changes since registration) |
get_board |
krs_number |
current board + supervisory bodies (note: PII of natural persons) |
Full description: src/index.ts + README.md.
Build and test
npm install # Node 20+
npm run build # tsc -> dist/
npm start # node dist/index.js
npm run dev # ts-node src/index.ts
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 4d ago First seen · 73 lines · 952 tokens per session scan A 00170f28f191
mcp-krs AGENTS.md is an instructions file published in the GitHub repository matematicsolutions/mcp-krs (1 stars, last pushed 1mo ago), licensed MIT. It adds 952 tokens to every session, about $0.0048 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other instructions, from other repositories
mcp-nsa AGENTS.md
AGENTS.md instructions for matematicsolutions/mcp-nsa, covering agents.md - mcp-nsa, project goal, matematic context (hard constraints), mcp tools (tools contract) and build and test.
mcp-legal-it CLAUDE.md
Instructions for capazme/mcp-legal-it, covering mcp-legal-it — project context, confini del progetto — leggere prima, stack, struttura and tool disponibili (33 moduli, 221 tool).
mcp-saos CLAUDE.md
Instructions for matematicsolutions/mcp-saos: This file exists for compatibility with Claude Code. The canonical instructions for AI agents working with this repo live in AGENTS.md - the agents.md standard (Linux Foundation / Agentic AI Foundation), supported by 20+ tools.
contract-ops-mcp AGENTS.md
AGENTS.md instructions for DrBaher/contract-ops-mcp, covering agents, discovery, output contract, safety boundaries (important) and typical loop.
mcp-saos AGENTS.md
Instructions for matematicsolutions/mcp-saos, covering agents.md - mcp-saos, project goal, matematic context (hard constraints), mcp tools (tools contract) and build and test.
mcp-nsa CLAUDE.md
Claude Code instructions for matematicsolutions/mcp-nsa: This file exists for compatibility with Claude Code. The canonical instructions for AI agents of this repo are in AGENTS.md - the agents.md standard (Linux Foundation / Agentic AI Foundation) supported by 20+ tools.