scale-canary SKILL.md skillA

scale-canary from hetcreep/coalmine is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add hetcreep/coalmine/scale-canary@git:20261105.0e547fe

Pins git:20261105.0e547fe in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
hetcreep/coalmine
Path
plugin/skills/scale-canary/SKILL.md
Versions recorded
12
Latest version
git:20261105.0e547fe, committed Nov 5, 2026
First version recorded
Aug 8, 2026
Size
8,919 bytes
Repository stars
14
License
Apache-2.0

Performance complexity and resource allocation canary — checks for O(N^2) loops, database N+1 query patterns, memory leaks (unbounded collections), and blocking calls in main event loop. Triggers on keywords: "/scale-canary", "scale-canary", "performance audit", "scale audit". Use when writing loops over growing data, DB queries, caches, or async/event-loop code.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Scale Canary (Performance & Resource Allocation Audit)

**Language:** Generate EVERYTHING at runtime in the user's language — questions, answer options, menu labels, recommendations, report narrative. Detect from their messages; never default to English just because this file is English. English is allowed only for technical terms: commands, paths, code identifiers, severity labels (CRITICAL/HIGH/MEDIUM/LOW), and tier names (Light/Standard/Heavy).

**Config reads — every config key, always the CASCADE, never the bare project file:** `~/.claude/.coalmine.json` first, then the project config (own agent dir → other known agent dirs → legacy `<gitroot>/.claude/.coalmine.json`, then `<gitroot>/.coalmine.json`); project wins per key **EXCEPT** the conductor's own safety clamps — `scanEverything`/`updateMode`/`enableConductor`/`rotCanaryMode` are clamped safer-value-wins (a project can only quieten, never escalate, among the clamp's own known values; an absent global reads as the schema default and is clamped the same way — an unrecognized project value is not validated here), and `scanExcludePaths`/`disabledCanaries` union-merge (a project adds, never drops). A bare project read is…
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add hetcreep/coalmine/scale-canary@sha256:048999ca19c3e92b

The line at the top of this page pins the label git:20261105.0e547fe, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_emays65uzedbakwx.svg)](https://markdownregistry.com/a/art_emays65uzedbakwx)

5 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 12 versions of this file, between Aug 8, 2026 and Nov 5, 2026, about one every 8 days.

versioncommittedcommitsizeaudit
git:20261105.0e547fe latest2026-11-05 0e547fe 8,919 BA view · diff
git:20261009.525cd922026-10-09 525cd92 8,866 BA view · diff
git:20260922.d210e8a2026-09-22 d210e8a 8,839 BA view · diff
git:20260922.b3be1e72026-09-22 b3be1e7 8,747 BA view · diff
git:20260922.948eedb2026-09-22 948eedb 8,600 BA view · diff
git:20260922.eb07a052026-09-22 eb07a05 8,308 BA view · diff
git:20260921.e8bc57e2026-09-21 e8bc57e 8,225 BA view · diff
git:20260903.0a4f5d32026-09-03 0a4f5d3 8,184 BA view · diff
git:20260903.62a3b912026-09-03 62a3b91 8,128 BA view · diff
git:20260821.c38e7342026-08-21 c38e734 7,832 BA view · diff
git:20260821.583c32b2026-08-21 583c32b 7,682 BA view · diff
git:20260808.de45ab02026-08-08 de45ab0 6,598 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (8919 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

hetcreep/coalmine · 14 stars · license Apache-2.0 · pushed 2026-11-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_emays65uzedbakwx
GET https://markdownregistry.com/api/v1/resolve?ref=hetcreep/coalmine/scale-canary
GET https://markdownregistry.com/api/v1/blob/048999ca19c3e92bedb5060510e673ccd8eb363b8dda009e47b782b99db3d445

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in hetcreep/coalmine

Other files named scale-canary

scale-canary SKILL.md skill
hetcreep/coalmine · skills/scale-canary/SKILL.md · Performance complexity and resource allocation canary — checks for O(N^2) loops, database N+1 query patterns, memory…
git:20260922.b3be1e7 · audit A · 14 stars
scale-canary SKILL.md skill
thecolliery/coalmine · skills/scale-canary/SKILL.md · Performance complexity and resource allocation canary — checks for O(N^2) loops, database N+1 query patterns, memory…
git:20260922.b3be1e7 · audit A · 14 stars
scale-canary SKILL.md skill
thecolliery/coalmine · plugin/skills/scale-canary/SKILL.md · Performance complexity and resource allocation canary — checks for O(N^2) loops, database N+1 query patterns, memory…
git:20261009.525cd92 · audit A · 14 stars

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