HealthMCP: Instructions file for Codex

AGENTS.md

HealthMCP AGENTS.md is an instructions file for Codex, OpenCode from justinmclean/HealthMCP. It costs 449 tokens per session, scanned A, original, MIT.

A project guide for coding agents working on an Apache health-report MCP server. MCP is a standard way for an AI tool to call functions provided by another program.

In plain words
What is it for?
Use it when changing report parsing, tool handlers, the JSON-RPC server, configuration, documentation, or tests.
Why use it?
It gives agents the project layout, defaults, supported report periods, and development workflow so they can work consistently.

Instructions file for CodexOpenCode

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

This is justinmclean/HealthMCP's own configuration. It tells Codex and OpenCode how to work on HealthMCP 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 HealthMCP configures →

Reuse

Borrowing it

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

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 449 This file is loaded in full into every session.
When invoked 449 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 $0.00449 $0.00449
Opus 5 $0.00225 $0.00225
Sonnet 5 $0.00090 $0.00090
Haiku 4.5 $0.00045 $0.00045

Measured 8d ago against content hash 239bd6ba6ff2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

HealthMCP 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 8d 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 · 60 lines

What it actually says

AGENTS

Purpose

This repository contains a small dependency-light MCP server for working with Apache Incubator health report Markdown files from tools/health/reports.

Project Layout

  • src/apache_health_mcp/parser.py
    • Markdown report loading, parsing, normalization, and query helpers
  • src/apache_health_mcp/tools.py
    • Tool handlers and shared reports-directory resolution
  • src/apache_health_mcp/protocol.py
    • JSON-RPC/MCP stdio protocol handling
  • server.py
    • Thin entrypoint
  • tests/
    • Unit and integration tests
  • tests/test_parser.py
    • Parser, tools, and protocol helper coverage
  • tests/test_mcp_integration.py
    • End-to-end MCP stdio coverage
  • docs/architecture.md
    • High-level module and runtime structure

Key Defaults And Concepts

  • --reports-dir controls the default reports directory in MCP client config.
  • If not set, the server defaults to reports.
  • Report parsing is centered on the ## Window Details section.
  • Supported windows include 3m, 6m, 12m, and to-date.
  • The server queries pre-generated report files; it does not run Apache’s upstream health data collection script.

Developer Workflow

Use these commands before finishing changes:

  • make check-format
  • make lint
  • make typecheck
  • make test

Coverage is available via:

  • make coverage

Contribution Guidelines

  • Keep report parsing logic in src/apache_health_mcp/parser.py.
  • Keep user-facing tool handlers in src/apache_health_mcp/tools.py.
  • Keep MCP/JSON-RPC protocol wiring in src/apache_health_mcp/protocol.py.
  • Keep server.py minimal.
  • Add tests for any new tool, query shape, or report parsing rule.
  • Update README.md and docs/architecture.md when changing public tools or runtime structure.

Testing Notes

  • Parsing and helper behavior belongs in tests/test_parser.py.
  • MCP stdio session coverage belongs in tests/test_mcp_integration.py.
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. 8d ago First seen · 60 lines · 449 tokens per session scan A 239bd6ba6ff2

Subscribe to this mod's changes

HealthMCP AGENTS.md is an instructions file published in the GitHub repository justinmclean/HealthMCP (0 stars, last pushed 4mo ago), licensed MIT. It adds 449 tokens to every session, about $0.0022 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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