mcp-eu-sparql: Instructions file for Codex

AGENTS.md

mcp-eu-sparql AGENTS.md is an instructions file for Codex, OpenCode from matematicsolutions/mcp-eu-sparql. It costs 1,466 tokens per session, scanned A, original, MIT.

Repository instructions for an MCP server that retrieves European Union law, Court of Justice case law, and national data-protection decisions from official data services. MCP, or Model Context Protocol, is a standard way for AI tools to call external services.

In plain words
What is it for?
Building, testing, or changing the EU-law MCP server and its tools, including their structured citation output.
Why use it?
They explain the project's legal-data goals and strict citation requirements, helping an agent return traceable legal information in the expected format.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions CLAUDE.md; mentions Claude Code; mentions AGENTS.md.

This is matematicsolutions/mcp-eu-sparql's own configuration. It tells Codex and OpenCode how to work on mcp-eu-sparql itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything mcp-eu-sparql configures →

Reuse

Borrowing it

Nothing to install: this file belongs to matematicsolutions/mcp-eu-sparql. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/matematicsolutions/mcp-eu-sparql/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/matematicsolutions/mcp-eu-sparql

Made for: Codex, OpenCode.

Wrote 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.

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README.md
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Per session 1,466 This file is loaded in full into every session.
When invoked 1,466 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.01466 $0.01466
Opus 5 $0.00733 $0.00733
Sonnet 5 $0.00293 $0.00293
Haiku 4.5 $0.00147 $0.00147

Measured 7d ago against content hash d8ab80a2de25, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

mcp-eu-sparql 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 7d 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.

AGENTS.md · 81 lines

How it starts

The opening of the file, as written. The whole thing — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md - mcp-eu-sparql

A file following the agents.md standard (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 European Union law and CJEU case law - via the official Publications Office SPARQL endpoint (publications.europa.eu/webapi/rdf/sparql) and the Cellar knowledge graph (CDM ontology) - plus national data-protection authority decisions via the official GDPRhub MediaWiki API (gdprhub.eu/api.php, content CC BY-NC-SA 4.0).

One of the 5 Polish-law MateMatic connectors (mcp-saos, mcp-nsa, mcp-isap, mcp-krs, mcp-eu-sparql (this one)).

MateMatic context (HARD CONSTRAINTS)

The repo is run by MateMatic Solutions.

  • Every tool call MUST return structuredContent.citations with: the CELEX identifier, the act title, the canonical URL (EUR-Lex), the publication date, and the access format (document format + language).
  • CELEX is critical - e.g. the AI Act = 32024R1689. Without CELEX there is no citability.
  • Stateless.
  • Multilingual - EU acts are published in 24 languages, default = pl, but the language? parameter falls back to English/French for CJEU where no Polish version exists.

MCP tools (tools contract)

Tool Key parameters Returns
search_by_celex celex (e.g. 32024R1689, 62018CJ0311), lang? act/judgment metadata + ECLI (case-law) + citations
search_by_date_range date_from, date_to, document_type? (REG/DIR/DEC/RECO/OPIN), lang?, limit? list of acts + citations
search_cjeu query? (keyword in title), date_from?, date_to?, document_type? (JUDG/ORDER/OPIN_AG), lang?, limit? CJEU judgments (CELEX + ECLI) + citations
search_cjeu_by_ecli ecli (e.g. ECLI:EU:C:2020:559), lang? CJEU judgment (CELEX + date + title) + citations
search_gdprhub query, limit? DPA decisions / GDPR commentary (title + url + snippet + license: CC BY-NC-SA 4.0)

Read the full file on GitHub · 81 lines

Changes

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.

  1. 7d ago First seen · 81 lines · 1,466 tokens per session scan A d8ab80a2de25

Subscribe to this mod's changes

mcp-eu-sparql AGENTS.md is an instructions file published in the GitHub repository matematicsolutions/mcp-eu-sparql (1 stars, last pushed 1mo ago), licensed MIT. It adds 1,466 tokens to every session, about $0.0073 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.

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