LinkedIn Hook Extractor#

Paste a viral LinkedIn post URL. Get back: which hook formula it uses, the exact structure, why it worked, and a blank template mapped to your topic.

When to use#

• User finds a viral post they want to study
• User wants to replicate a specific creator's pattern
• Before linkedin-post-writer to seed a draft with a proven structure

Input#

A LinkedIn post URL (any type: activity, share, ugcPost).

Output#

• Formula identified (F1-F16 from ../../references/hook-formulas.md) with confidence score
• Structural breakdown:
  • Hook lines (first 210 chars)
  • Body architecture (sections + what each does)
  • Close pattern
  • Reaction-triggering devices (numbers, named entities, vulnerabilities)
• Why it worked psychologically
• Blank template filled with slot markers matched to the original, ready for the user's voice
• Cautions: anything in the original post that would fail 2026 audit (em dashes, AI vocab, outdated tactics)

Steps#

1. Parse URL. lib.url_parser.parse_linkedin_url → post_urn.

2. Fetch post body. If APIFY_TOKEN is set, call lib.ApifyClient.fetch_post(url). Otherwise ask the user to paste the text.

3. Classify. Match against the 16 formulas using features:

   • First 2 lines: anaphoric? question? confession? number-led?
   • Body: numbered list? dated receipts? ledger? teardown?
   • Close: mirror question? identity reframe? commitment?
   • F11-F16 cues: in-medias-res emotional scene with no setup (F11 Emotional Cold-Open); "I don't know who needs to hear this" reassurance (F12 Permission Slip); fake-bad-news that resolves positive (F13 Bait-and-Switch); a roll-call of named people thanked (F14 Named Gratitude); "{jargon} explained to kids" glossary (F15 Explain-to-Kids); "outside I'm called X, at home none of it survives" (F16 Status-Strip).

4. Score confidence. If multiple formulas fit, return top 2 with fit scores.

5. Extract structure. Pull each logical section and label it by formula role.

6. Generate blank template. Replace specifics with {slot} markers that match the user's topic.

7. Audit the source. Flag any AI tells in the original so the user doesn't copy them.

Example#

See references/examples.md for worked examples.

Formulas reference#

See ../../references/hook-formulas.md for the 16 canonical formulas with full skeletons.

Files#

• SKILL.md — this file
• references/classification-rules.md — feature extraction + scoring heuristics

Related skills#

• linkedin-post-writer — use the extracted template to draft your own
• linkedin-humanizer --mode audit — audit your draft before shipping