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.
/plugin marketplace add HetCreep/CoalMinenpx agentmods add plugins/hetcreep/coalmine/plugingit clone --depth 1 https://github.com/HetCreep/CoalMineGrade A, and why
coalmine 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 yesterday.
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.
This is a copy
100% identical to coalmine — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
{
"name": "coalmine",
"version": "3.18.1",
"description": "CoalMine — 9 quality-canary skills for coding agents: rot-canary (code-health audit + auto-cadence hooks), gold-standard (world-class completeness; fills & adopts rules), source-grounding (anti-hallucination sourcing), supply-chain-audit (deps/build/artifact trust), resilience-audit (failure-mode FMEA), telemetry-canary (observability/logging), testability-canary (decoupling/DI), scale-canary (perf scaling), drift-canary (contract/schema drift). Sub-agent + model-aware, cross-platform, report-not-fix.",
"author": {
"name": "HetCreep"
},
"homepage": "https://github.com/HetCreep/CoalMine",
"repository": "https://github.com/HetCreep/CoalMine",
"license": "Apache-2.0",
"keywords": [
"code-review",
"code-health",
"quality",
"audit",
"dead-code",
"supply-chain",
"resilience",
"hallucination",
"observability",
"testability",
"performance",
"drift",
"skills",
"hooks"
]
}
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.
- yesterday First seen · 28 lines scan A 855ffe730ae4
coalmine is a plugin published in the GitHub repository HetCreep/CoalMine (12 stars, last pushed 7d ago), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. It is 100% identical to coalmine, differing in 0 lines, and is treated as a copy.
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