mcp-sparql: Instructions file for Codex

AGENTS.md

mcp-sparql AGENTS.md is an instructions file for Codex, OpenCode from daedalus/mcp-sparql. It costs 442 tokens per session, scanned A, original, MIT.

Project instructions and development notes for an MCP server that lets agents query RDF data sources with SPARQL, a query language for linked data.

In plain words
What is it for?
Use it when developing or maintaining the server, including its query validation, graph listing, prefix discovery, formatting, tests, and static checks.
Why use it?
It gives contributors one place to find setup, testing, formatting, code-quality, security, and complexity-checking commands.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions AGENTS.md.

This is daedalus/mcp-sparql's own configuration. It tells Codex and OpenCode how to work on mcp-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-sparql configures →

Reuse

Borrowing it

Nothing to install: this file belongs to daedalus/mcp-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/daedalus/mcp-sparql/master/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/daedalus/mcp-sparql

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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Per session 442 This file is loaded in full into every session.
When invoked 442 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 $0.00442 $0.00442
Opus 5.5 $0.00177 $0.00177
Sonnet 5.5 $0.00088 $0.00088
Haiku 4.5 $0.00044 $0.00044

Measured 1mo ago against content hash 622af8c68fa7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mcp-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 1mo 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 · 76 lines

What it actually says

AGENTS.md — mcp-sparql

Overview

An MCP server that exposes SPARQL query functionalities, enabling LLMs to query RDF triple stores (Wikidata, DBpedia, custom endpoints) via the Model Context Protocol. Supports SELECT, ASK, CONSTRUCT, and DESCRIBE queries, query validation, named graph listing, and prefix discovery.

Commands

Command Description
pytest Run test suite
ruff format Format code
mdformat Format markdown
prospector --with-tool ruff --with-tool mypy --with-tool pylint src/ Lint + type check
opengrep --config=auto --severity=ERROR src/ Security scanning
vulture --min-confidence 90 src/ Dead code detection
lizard src/ --min-cyclomatic-complexity 10 Code complexity analysis

Development

# Setup
pip install -e ".[test]"

# Test
pytest

# Format
ruff format src/ tests/

# Lint
prospector --with-tool ruff --with-tool mypy --with-tool pylint src/

Testing

Uses pytest with pytest-cov for coverage. Tests cover:

  • Pydantic model validation (all edge cases)
  • SPARQL query syntax validation
  • Table/JSON formatting helpers
  • Error handling paths
  • Resource endpoints

Code Style

  • Format: ruff format
  • Lint + Type check: prospector (ruff check + mypy + pylint)
  • Docstrings: Google style

Release

./tools/release.sh          # bump patch (default)
./tools/release.sh minor
./tools/release.sh major

MCP Server

pip install mcp-sparql

Add to mcp.json:

{
  "mcpServers": {
    "mcp-sparql": {
      "command": "mcp-sparql"
    }
  }
}
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. 1mo ago First seen · 76 lines · 442 tokens per session scan A 622af8c68fa7

Subscribe to this mod's changes

mcp-sparql AGENTS.md is an instructions file published in the GitHub repository daedalus/mcp-sparql (0 stars, last pushed 4mo ago), licensed MIT. It adds 442 tokens to every session, about $0.0018 per session on Opus 5.5. 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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