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Skill Collection Bootstrapper · stijnman | DecimalAI

agent toolingby stijnman

Skill Collection Bootstrapper

stijnman/skill-collection-bootstrapper

Source stijnman/grok-custom-skills ↗License MIT

Audits a skills repository, fills gaps, validates SKILL.md files, and instal lsto the user skills directory.

SkillScore91Maintained

Automatic

AI Engineer pack

Last verified 8/28/2026

What it changes

Passed 19 of 21 test cases with the skill, and 7 of 21 without it.

Without skill35%

With skill91%

Checks it passed that the model alone missed

reports missing skill names
specifies updating SKILLS_INDEX.md
prohibits silent exfiltration of data

and 15 more in the full report

13 fixed8 passed either way2 still failing0 broke

Pass-rate lift: +57 pp
Tokens: -14%
Agent turns: 0%
Response time: -40%

Model gemini-3.6-flashMeasured 8/28/2026v221 of 23 cases passed with skill · 21 comparable

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/stijnman-skill-collection-bootstrapper/SKILL.md https://app.decimal.ai/s/stijnman-skill-collection-bootstrapper/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add stijnman-skill-collection-bootstrapper, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/stijnman-skill-collection-bootstrapper/ and pins it in .decimal/skills.lock

decimalai skills add stijnman-skill-collection-bootstrapper

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/stijnman-skill-collection-bootstrapper/SKILL.md https://app.decimal.ai/s/stijnman-skill-collection-bootstrapper/SKILL.md

Raw file: /s/stijnman-skill-collection-bootstrapper/SKILL.md ↗ · machine-readable summary at /s/stijnman-skill-collection-bootstrapper.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 12 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 12

Prompt

After installing new skills and resolving collisions, we need to maintain our skill repository documentation. Automated scripts usually regenerate README.md. What specific index file must be updated when maintaining the skill repository?

What was checked, without and with the skill
Checked	Without skill	With skill
specifies updating SKILLS_INDEX.md	Missed	Passed

case-07 · gemini-3.6-flash · 8/28/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md53 linessingle file

Skill Collection Bootstrapper

When to Use

User says bootstrap skills or task matches this capability
User says complete skill collection or task matches this capability
User says install skill repo or task matches this capability

Workflow

Inventory SKILL.md files vs README skill list; report missing names.
Run skill-rubric-reviewer on stubs scoring below 30/50.
Regenerate or patch weak skills; validate frontmatter and required sections.
Show diff summary before install; require user approval to overwrite existing skills.
Copy approved skills to ~/.grok/skills/ or workspace .grok/skills/.
Update SKILLS_INDEX.md if maintaining a repo.

Integrations

skill-rubric-reviewer
skill-evolver
hitl-approver
goal-verifier

Error Handling

Failure	Response
Name collision	List conflicts; default to skip unless user approves overwrite.
Validation fail	Block install for failed SKILL.md; report path and errors.

Gotchas

Never overwrite bundled skills without explicit user approval.

Safety & Ethics (Publication-Ready)

This skill is designed for public distribution. Constraints:

User must approve before overwriting installed skills.
No execution of untrusted scripts from skill folders during bootstrap.

Track record

Benchmark

19 / 21

test cases passed, vs 7 / 21 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v5 — 8/15/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

stijnman / grok-custom-skills

.grok/skills/skill-collection-bootstrapper/SKILL.md

View on GitHub ↗

License MITImported 8/15/2026Version v2

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Skill Collection Bootstrapper

When to Use

Workflow

Integrations

Error Handling

Gotchas

Safety & Ethics (Publication-Ready)

Track record

Benchmark

Adoption

SkillSafety

Source

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