ad-x— agent skill

Overview

This skill defines exactly what to produce for an X (Twitter) ad. It is platform-spec only: the slots X exposes for Promoted Posts, Website Cards, App Cards, and Video Ads, the character limits, asset ratios, and the CTA button enum.

Instructions

Ad Formats Covered

Promoted Post — Slots and Limits

Website Card — Slots and Limits

App Card — Slots and Limits

Image / Video Specs

CTA Button Enum (Website Card / App Card — 2025+ Sales-Objective Link Preview)

X consolidated the CTA enum in 2025 alongside the new Sales-objective link preview format. Both Website Card and App Card now share this enum:

• Play
• Install
• Open
• Book
• Shop
• Connect
• Order

Legacy CTAs (Learn More, Sign Up, Buy Now, Visit Site, Subscribe, Get Quote, Shop Now) are deprecated in the new link preview but may still appear on older running campaigns. Do not use legacy values in new creative.

Copy Rules — Promoted Post Must Read Native

• 280 chars is the hard cap, but the sweet spot is 70–150. Walls of text scroll past in milliseconds.
• First line carries the post. The image or hook line must stop the thumb in ≤1 second.
• No hashtags unless they're real topic tags (X's topic system, not arbitrary #marketing).
• 1 link per post — if you append a Website Card, do NOT also put the URL in the text. Pick the card.
• Emojis: 0–2, and only if they replace a word or anchor an idea. Decorative emoji strings (✨🚀💯) flag as low-quality.
• Avoid "Click the link below" — readers know.
• Avoid "Hey [audience]," openers — algorithmic cold-start penalty.
• Brand-safety verdict: edgy is fine if defensible. Crude language drops MediumRisk → ads system pulls placements → reach collapses.

Algorithm Touchpoints (for ad-as-post)

X's ad surface ranks against the same For You ranker (Phoenix-era) as organic. Promoted Posts pass through:

• Banger Initial Screen — VLM scores quality + slop. Templated copy gets flagged. Make it look like a real artifact.
• Scroll-past as negative signal — failing to earn dwell costs score across the audience cluster.
• 7 PTOS safety classifiers — a single hit zeroes the post. Ad disapproval is the visible form; reach loss is the invisible form.

Takeover surfaces (Timeline, Trend, Spotlight) bypass the auction but still hit safety classifiers.

Audience Reach Caveat (Premium / Premium+)

• Premium+ users see NO ads in feeds
• Premium tier users see ~50% fewer ads in For You / Following
• Material consequence: organic-feeling creative compounds harder because the in-feed surface skews toward less-subscribed users
• Char-count gotcha: if a URL is embedded in post text (not card-attached), each URL consumes 23 chars of the 280 budget — usable copy drops to 257 chars

Policy Constraints

• Trademark / copyrighted material without authorisation — disapproval
• Misleading metrics ("10M users" without proof) — manual review
• Crypto (Feb 2026 update) — exchanges, wallets, kiosks/ATMs, debit/credit cards permitted in SA, KW, TR, IE, HK, KR, UK, FR, DE only. Singapore removed in 2026. Other crypto products still gated. All paid promotional crypto content (including influencer shilling) requires machine-readable disclosure or account suspension
• Gambling — restricted, country-specific certification required
• Adult content — banned in ads even though organic permits some under the Adult Content Creator (ACC) program
• Political / issue ads (2026) — reinstated under structured disclosure across 38 eligible countries. Required: certified advertiser status + machine-readable "Paid For By" disclosure. Targeting an ineligible country = auto-reject
• Personal attributes targeting in copy — disapproval risk
• Sensitive personal events (illness, bereavement) — restricted
• Adjacency exclusion — ads will not serve adjacent to 12 categories (adult, violence, political conflict, profanity, drugs, spam, misinfo, hate, terrorism, self-harm, gambling, obscenity). Affects reach in regulated verticals

Output Format

# X Ads — [Product] [Campaign Name]

## Format
[Promoted Post / Website Card / App Card / Video Ad / Carousel / Vertical Video]

## Destination URL
[Landing page URL]

## Promoted Post Text (≤280, ≤150 ideal)
> [Copy — first line is the hook]

Char count: [N]/280

## Website Card (if attached)
- Card title (≤70 char): [title] — [chars]
- CTA: [from enum]
- Image / video: see visual spec

## Visual Spec
- Asset type: [Image / Video / GIF / Carousel]
- Ratio: [16:9 / 1:1 / 9:16]
- Shot: [concrete scenario]
- Text overlay (video): "[per-scene captions]"
- First frame (video): [what's visible at 0s — must hook]

## Carousel (if used)
| # | Image (1:1) brief | URL | CTA |
|---|-------------------|-----|-----|
| 1 | [shot] | [URL] | [enum] |
| 2 | ... | ... | ... |

## Variant Set
| # | Angle | Post Text (≤280) | Card Title | CTA |
|---|-------|------------------|------------|-----|
| 1 | [angle] | [hook line + rest] | [≤70] | [enum] |
| 2 | ... | ... | ... | ... |

## Pre-Submit Checklist
- [ ] Post reads native — could pass as organic
- [ ] Post text ≤280 char (ideally ≤150)
- [ ] First line hooks in ≤1 second of read
- [ ] No "click the link below" or "Hey [audience]"
- [ ] One link OR one card — not both
- [ ] Emojis ≤2 and load-bearing, not decorative
- [ ] No hashtag spam
- [ ] CTA from correct enum (Website vs App card)
- [ ] Video captioned for silent autoplay
- [ ] Brand-safety: crude language out, defensible edgy in
- [ ] Visual ratio matches placement

When NOT to Use This Skill

• Audience targeting / tailored audiences → out of scope
• Conversion tracking / Pixel setup → out of scope