fitness-functions SKILL.md skillA
fitness-functions from habitat-thinking/ai-literacy-superpowers is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add habitat-thinking/ai-literacy-superpowers/fitness-functions@git:20260407.30b182cPins git:20260407.30b182c in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- habitat-thinking/ai-literacy-superpowers
- Path
ai-literacy-superpowers/skills/fitness-functions/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260407.30b182c, committed Apr 7, 2026
- Size
- 11,355 bytes
- Repository stars
- 121
- License
- a license file GitHub does not identify
Use when designing architectural fitness functions as GC rules — periodic checks that verify system-wide properties like layer boundaries, coupling trends, and complexity hotspots, complementing per-change constraints with weekly architectural health monitoring.
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
# Architectural Fitness Functions ## Overview Architectural fitness functions are periodic automated checks that verify system-wide architectural properties. The concept comes from Ford, Parsons, Kua & Sadalage's *Building Evolutionary Architectures* (O'Reilly, 2017/2022). Their key insight: architecture degrades not through single bad changes but through accumulated small violations. Each individual change looks reasonable in isolation. The damage is cumulative and invisible until it becomes painful. Fitness functions catch the accumulation that per-change constraints miss. They answer questions like: - Has coupling between modules A and B increased over the last month? - Are any files becoming complexity hotspots — high churn correlated with growing cognitive complexity? - Do all modules still respect declared layer boundaries? - Is test coverage declining in the most architecturally significant layers? These checks are too slow or expensive for every PR (full dependency graph analysis, coupling metric computation, churn-complexity correlation). But they are too important to skip entirely. The GC system's weekly cadence is a natural fit. --- …
Read the whole file at its exact version.
How to install
mdr add habitat-thinking/ai-literacy-superpowers/fitness-functions@sha256:ac5843bc4da42d1aThe line at the top of this page pins the label git:20260407.30b182c, 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.
[](https://markdownregistry.com/a/art_jha4ypcsruv4ildi)
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Versions
The registry has recorded 1 version of this file, committed on Apr 7, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (11355 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
habitat-thinking/ai-literacy-superpowers · 121 stars · license a license file GitHub does not identify · pushed 2026-10-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_jha4ypcsruv4ildi GET https://markdownregistry.com/api/v1/resolve?ref=habitat-thinking/ai-literacy-superpowers/fitness-functions GET https://markdownregistry.com/api/v1/blob/ac5843bc4da42d1adafe7dbe84d8c0d1655fa2b57492f4c1b3607c6927a04ec6
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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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