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npx agentmarket install skill/juliusbrussee-check
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About
Use cases: security
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What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.
- Tools
- No tools found
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Network hosts it talks to 1
codeload.github.com· found in install command
Files it touches
~/.claude/skills/check
What's inside
- Skill name
check- Description
- Read-only drift detector. Diffs SPEC.md against current code and reports violations grouped by severity. Writes nothing — suggests remedies via the spec or build skills but never invokes them. Triggers when the user asks to check drift, audit the spec, verify invariants, or ask whether code still matches the spec. Phrasings: "check drift", "audit the spec", "does the code still match §V", "check invariants", "spec vs code".
- License
- MIT
- Instructions
- 84 lines in SKILL.md · view on GitHub
Files (1)
- SKILL.md
SKILL.md (first lines)
# check — drift report
Pure diagnostic. Reports violations. Writes nothing. User decides remedy.
Spec drifting silently from code is the #1 SDD failure mode. check is the
detector. Run it after each `/build` and before each ship — drift caught here is
a diff; drift caught in prod is a §B.
## LOAD
1. Read `SPEC.md`. If missing → "no spec, nothing to check." Stop.
2. Parse invocation args:
- `§V` → check invariants only (default)
- `§I` → check interfaces
- `§T` → audit task status vs code
- `--all` → all three
## CHECK §V — invariants
For each V<n>:
1. Translate invariant into verifiable claim about code.
2. Grep / read relevant files.
3. Classify: **HOLD** / **VIOLATE** / **UNVERIFIABLE**.
4. Record address + file:line evidence.
## CHECK §I — interfaces
For each I item:
1. Locate implementation.
2. Classify:
- **MATCH** — shape in code = shape in spec.
- **DRIFT** — impl exists, shape differs.
- **MISSING** — impl absent.
- **EXTRA** — code exposes surface not in §I.
## CHECK §T — tasks
For each T<n>:
1. If `x`: verify claimed work present.
2. If `~`: note as in-progress.
3. If `.`: note as pending.
4. Flag `x` rows with no evidence as **STALE**.
## REPORT
Caveman. Grouped by severity.
```
## §V drift
V2 VIOLATE: auth/mw.go:47 uses `<` not `≤`. see §B.1.
V5 UNVERIFIABLE: no test covers ∀ req path.
## §I drift
I.api DRIFT: POST /x returns `{result}` not `{id}`. route.go:112.
I.cmd MISSING: `foo bar` absent from cli/*.go.
## §T drift
T3 STALE: status `x`, no middleware file exists.
## summary
2 violate. 1 missing. 1 stale. 1 unverifiable.
next: spec skill with `bug:` or fix code at cited lines.
```
## REMEDY HINTS (not actions)
End report with one-line hint per class:
- VIOLATE / DRIFT → invoke spec skill `bug: <V.n>` or fix code.
- MISSING → invoke build skill on `§T.n` if task exists; else spec skill `amend §T`.
- STALE → spec skill `amend §T` to uncheck.
- EXTRA → spec skill `amend §I` to document, or delete code.
Never invoke fixes. Report only.
## NON-GOALS
- Zero writes. No SPEC.md edits. No code edits.
- No sub-agents. Main thread reads.
- No scores, no grades. Binary per item: holds or drifts.From JuliusBrussee/cavekit, MIT.
More from JuliusBrussee/cavekit
- 0.719score
spec
JuliusBrussee
Create, amend, or backprop bugs into SPEC.md at repo root.
SkillCFreshness: C★ 1.2KClaude Code +9 - 0.719score
grill
JuliusBrussee
Calibrated interrogation of a fuzzy idea before it becomes a spec.
SkillCFreshness: C★ 1.2KClaude Code +9 - 0.719score
review
JuliusBrussee
Adversarial senior review of the spec before any code is written.
SkillCFreshness: C★ 1.2KClaude Code +9 - 0.719score
deepen
JuliusBrussee
Optional design-improvement pass for when you have spare usage to drain.
SkillCFreshness: C★ 1.2KClaude Code +9 - 0.719score
build
JuliusBrussee
Plan-then-execute implementation against SPEC.md.
SkillCFreshness: C★ 1.2KClaude Code +9 - 0.719score
research
JuliusBrussee
Gather external knowledge the spec needs and distill it into §R — the durable research log — so build grounds in facts instead of hallucinating library…
SkillCFreshness: C★ 1.2KClaude Code +9 - 0.644score
backprop
JuliusBrussee
Bug → spec protocol.
SkillDFreshness: D★ 1.2KClaude Code +9 - 0.644score
caveman
JuliusBrussee
Caveman encoding for SPEC.md and spec-adjacent writes.
SkillDFreshness: D★ 1.2KClaude Code +9
Signals
- Stars
- 1,157
- Forks
- 89
- Open issues
- 12
- Last commit (this folder)
- Jun 18, 2026 (4 months ago)
- Last release
- Apr 18, 2026 (6 months ago)
From GitHub (fetched Oct 24, 2026).
Details
- License
- MIT
- Repository
- github.com/JuliusBrussee/cavekit
- Website
- caveman.so/
- First seen
- Oct 24, 2026
- Last checked
- Oct 24, 2026
- Source
- GitHubgithub-graphql
Same skill elsewhere
Copies of this SKILL.md published by others; search shows only one of them.
More from JuliusBrussee
- 0.888score
caveman-compress
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Compress a memory file such as CLAUDE.md or a todo list into caveman format to save input tokens, keeping a readable backup.
SkillAFreshness: A★ 114.8KClaude Code +9 - 0.885score
caveman-evidence-review
JuliusBrussee
Read-only review of Caveman Cloud evidence: cost, Cave Score, workflows, traces, latency, errors, routing, savings.
SkillAFreshness: A★ 114.8KClaude Code +9 - 0.885score
caveman-optimize
JuliusBrussee
Turn a Caveman optimization observation into an operator-chosen candidate with a paired baseline evaluation.
SkillAFreshness: A★ 114.8KClaude Code +9 - 0.885score
caveman-manage
JuliusBrussee
Inspect Caveman Cloud's experiment lifecycle and block unsafe execution.
SkillAFreshness: A★ 114.8KClaude Code +9 - 0.885score
caveman-learn
JuliusBrussee
Act on a Caveman learn report - review the ranked token sinks, apply cost-lowering fixes with per-edit consent, and report what those fixes returned.
SkillAFreshness: A★ 114.8KClaude Code +9 - 0.882score
cavecrew
JuliusBrussee
When to delegate to `cavecrew-investigator` (locate code), `cavecrew-builder` (1-2 file edit) or `cavecrew-reviewer` (diff review) instead of working inline…
SkillAFreshness: A★ 114.8KClaude Code +9
Cite this page
check skill. Agent Mart. https://agentmart.dev/skills/juliusbrussee-check (last updated 2026-10-24)