The Hook System

The first three seconds decide whether the rest of the ad exists. Hooks are the highest-leverage unit of paid creative work — and hook diversity is what earns incremental learning: distinct hooks reach distinct pockets of the audience, while near-identical openings mostly re-test what you already know about the same one. This reference is a complete system for generating, diagnosing, and iterating hooks — not a list of one-liners.

Use it inside Mode 1/3 generation (hooks for new concepts), Mode 2 iteration (diagnosing why an ad underperforms), and the creative strategy loop in creative-roadmap.md.

A Hook Is Three Components, Not a Line

In video, the hook is the simultaneous combination of:

The no-duplication rule: the three components must complement, never repeat. If the VO says "I stopped paying $200/mo for my gym" while the caption reads "I stopped paying $200/mo" over a static talking head, two of the three slots are wasted. Strong hooks split the work — visual shows the cancellation email, VO says the line, caption names the alternative. When writing hooks, write all three columns explicitly; a hook spec with one column filled in is a third of a hook.

Static ads collapse this to two components (visual + headline) — the same rule applies: the headline must not caption the image.

The Generation Pipeline

Work top-down; hooks written without the upstream steps read like everyone else's ads.

Segment → Motivation → Format → Hook (three components)

1. Segment — which specific buyer this hook addresses. Not the whole ICP: a slice with a shared situation (from the Grounded Inputs corpus: reviews, comments, sales-call language). The narrower the segment, the sharper the hook.
2. Motivation — the single pain, desire, or objection that moves this segment, in their words. Pull verbatim phrases from reviews and comments; the corpus language always outperforms marketing paraphrase.
3. Format — the delivery vehicle: street interview, POV selfie, screen recording, unboxing, side-by-side demo, text-on-screen static, founder-to-camera, reaction stitch. Pick the format before writing the line — the same motivation reads completely differently as a street-interview answer vs. a confession-to-camera.
4. Hook — now write the three components for this segment × motivation × format cell.

Output as a hook matrix so coverage is visible:

| # | Segment | Motivation (verbatim source) | Format | Visual action | Spoken line | Caption |

Generate across the matrix, not down a single column — ten hooks for ten segment×motivation cells beat thirty rewordings of one cell. This is the same angle-diversity principle as the static template library: matrix diversity is audience diversity.

Hook Opening Moves

A menu of proven opening structures. Cycle through them like the static templates — don't cluster on favorites:

The last five are one family: contrast. People understand a thing by comparing it with something else, so a hook that sets up two states, two options, or two groups gives the viewer a question to stay for. That is also why AI copy leans on "it's not X, it's Y." The difference is that a good contrast hook compares two things the audience actually weighs, while the AI tell negates a claim nobody made (see the copywriting skill's AI-tells reference). Contrast hooks work best for educational content and decisions; for impulse products, lead with proof or POV instead.

The Diagnostic Funnel

Each metric in the delivery funnel isolates a different component. When an ad underperforms, read the funnel to find which part to fix instead of scrapping the whole ad:

Two rules this table enforces:

• A great thumbstop is not a great ad. A clickbait visual that attracts the wrong viewers shows up as high thumbstop + collapsed hold/CVR. Read the whole funnel before declaring a winning hook.
• One component per iteration. Change the visual OR the on-ramp OR the offer framing per test cycle — matching the one-variable rule in Common Mistakes.

The On-Ramp Rule

The on-ramp is seconds ~3–15: the bridge from hook to body. A good on-ramp logically extends the hook's premise; a bad one pivots to a product pitch that abandons it. If the hook promises "what actually causes this," the next beat must start explaining the cause — not introduce the brand story.

Corollary: every hook test is also an on-ramp test. Swapping a new hook onto an existing ad body usually breaks the premise-bridge; when testing hooks, re-write the on-ramp to match each one. Hold rate is the on-ramp's metric — diagnose it separately from thumbstop.

Fidelity Laddering

Match production cost to evidence strength (production tiers are defined in creative-roadmap.md):

• Hunches ship low-fidelity within a day or two: statics, text-on-screen video, voiceover-over-b-roll, remixes of existing footage. The goal is a cheap signal on the angle, not a polished ad.
• Validated angles earn high-fidelity: creator shoots, street interviews, staged demos. Only spend production budget on hooks whose low-fi version already showed a funnel signal (even a single-metric win — a hold-rate spike on an ugly static is evidence).

Testing a hunch with an expensive shoot and testing a proven angle with a throwaway static are both mistakes — the ladder runs in one direction.

Grounding Rules (inherited, non-negotiable)

Hooks inherit every grounding rule from SKILL.md: every hook cites the corpus source its motivation came from; no invented claims, stats, or testimonials; verbatim customer language over paraphrase. Additionally, mine organic content in the niche (top-performing TikToks/Reels/posts, via the scraping skill or the social listening tooling in social) for the audience's actual vocabulary — the words the niche uses ("GLP-1" vs. the clinical term, the slang for the pain) belong in the caption and spoken line. Organic mining is language research, not copying: take the vocabulary and the visual conventions, never a creator's specific creative.

Common Failure Modes

• Thirty rewordings of one cell — variation without matrix coverage; diversity of segment×motivation is the point
• Components duplicating each other — three slots saying one thing
• Hook tested, on-ramp inherited — premise-bridge broken, hold rate blamed on the hook
• Funnel read stops at thumbstop — clickbait winners scale into CVR craters
• Polished hunches — high-fidelity production spent on unvalidated angles
• Marketing-voice captions — the corpus and the niche's organic content define the vocabulary; "revolutionary formula" appears in neither