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Hook Stack Evaluator · nicepkg | DecimalAI

marketingby nicepkg

Hook Stack Evaluator

nicepkg/hook-stack-evaluator

Source nicepkg/ai-workflow ↗License MIT

Evaluates and sharpens content hooks using The Hook Stack™ framework.

SkillScore86Maintained

Automatic

Marketing & Content pack

Last verified 8/24/2026

What it changes

Passed 19 of 22 test cases with the skill, and 8 of 22 without it.

Without skill36%

With skill86%

Checks it passed that the model alone missed

Outputs the exact header 'THE FINAL HOOK'.
Provides 3 to 5 newly generated hook options.
Assigns a score of 1 out of 3 for the Earn the Stop layer.

and 14 more in the full report

13 fixed6 passed either way1 still failing2 broke

Pass-rate lift: +50 pp
Tokens: +136%
Agent turns: 0%
Response time: -18%

Model gemini-3.6-flashMeasured 8/24/2026v119 of 22 cases passed with skill

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/nicepkg-hook-stack-evaluator/SKILL.md https://app.decimal.ai/s/nicepkg-hook-stack-evaluator/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add nicepkg-hook-stack-evaluator, 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/nicepkg-hook-stack-evaluator/ and pins it in .decimal/skills.lock

decimalai skills add nicepkg-hook-stack-evaluator

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

curl -fsSL --create-dirs -o .claude/skills/nicepkg-hook-stack-evaluator/SKILL.md https://app.decimal.ai/s/nicepkg-hook-stack-evaluator/SKILL.md

Raw file: /s/nicepkg-hook-stack-evaluator/SKILL.md ↗ · machine-readable summary at /s/nicepkg-hook-stack-evaluator.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 13 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 13

Prompt

Your scorecard gave my headline 'I analyzed 1,000 cold emails — here is the 4-word opening that got 40% reply rates' a 14/15. I choose to KEEP it.

What was checked, without and with the skill
Checked	Without skill	With skill
Asks if the user has another hook they would like evaluated.	Missed	Passed

case-19 · gemini-3.6-flash · 8/24/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md266 linessingle file

Hook Stack Evaluator

You are The Hook Evaluator, a sharp-eyed sparring partner who evaluates and sharpens content hooks using The Hook Stack™ framework.

What This Does

Evaluates any hook (headline, opening line, video intro, carousel opener) against a 5-layer framework and provides actionable scoring and refinement.

When to Use

"Evaluate this hook"
"Run this through the hook stack"
"Score my headline"
"Rate this opening"
"Help me sharpen this hook"
When the newsletter-writer agent needs headline/subhead evaluation

Mode Detection

This skill operates in two modes. Detect mode BEFORE evaluating:

Automatic Mode (no asking, just deliver)

Triggers:

User said "automatic", "automatically", "in the background", "without asking"
Called by another agent or skill in a pipeline
User said "just do it", "handle it", "take care of it"
Context suggests batch processing or workflow automation

In Automatic Mode:

Skip audience/platform questions (use context or reasonable defaults)
Deliver the scorecard
If score < 12/15: Automatically generate 3 improved alternatives and pick the best
If score >= 12/15: Confirm hook is ready
Output THE FINAL HOOK with the best result
Do NOT ask "Keep / Tweak / Trash?" - make the call

Interactive Mode (collaborative sparring)

Track record

Benchmark

19 / 22

test cases passed, vs 8 / 22 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 v4 — 8/3/2026

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

nicepkg / ai-workflow

workflows/content-creator-workflow/.claude/skills/hook-stack-evaluator/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1

Other skills for the same job

Published skills whose descriptions closely match this one, with their headline benchmark lift.

mohitagw15856/hook-writerGenerate scroll-stopping hooks — the first line of a post, thread, video, or email that decides whether anyone keeps reading. Use when asked to write a hook, an opener, a first line, a thread starter, a video cold-open, or to make something more clickable. Produces multiple distinct hook options across proven angles (curiosity, contrarian, result, story, stakes), each labelled with why it works and which platform it fits.Close match+18 pp pass-rate lift

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

Hook Stack Evaluator

What This Does

When to Use

Mode Detection

Automatic Mode (no asking, just deliver)

Interactive Mode (collaborative sparring)

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

Related skills