Platforms: X (Twitter)

Guides X post copy creation and optimization. Use for generating publish-ready posts, threads, and content that performs on X. Suitable for copy agents, design agents (image specs), and video agents (video post specs).

When invoking: On first use, if helpful, open with 1-2 sentences on what this skill covers and why it matters, then provide the main output. On subsequent use or when the user asks to skip, go directly to the main output.

Output: Publish-Ready Copy

This skill enables agents to generate X post copy that can be published directly. Output includes character-counted text, thread structure, and platform-compliant formatting.

Character Limits

Type	Limit	Notes
Standard post	280 characters	Most users
Premium	25,000 characters	X Premium subscribers
URL	Counts as 23 chars	t.co shortens all links
Emoji	~2 chars each	Varies by emoji

Optimal Lengths (Engagement)

Use Case	Characters	Purpose
General	71-100	Sweet spot for engagement
Promotional	120-130	Product/offer posts
Question	60-80	Drive replies
Retweet-friendly	~116	Leaves room for "RT @user:"

Thread Format

• Structure: 3-5 connected posts; number as 1/5, 2/5, etc.
• First post: Strong hook; no "thread" in first line
• Last post: CTA, summary, or question
• Each post: ~80 chars; can stand alone

Post Structure (Hook + Value + CTA)

Part	Ratio	Guideline
Hook	10%	First 1-2 lines; question, fact, or emotion; ~50 chars
Value	70%	Practical info; use thread for depth
CTA	20%	Call for reply, question, or action

End with open question to drive replies. Thread structure can extend impressions ~10x.

Algorithm (Grok AI)

Signal Weights

Signal	Impact
Replies	Highest (~54-75x likes); quality > quantity
Author replies	Active reply chains ~75x visibility
Bookmark	2026 signal; saves boost recommendation
Media	Images/video ~2x; video 2-4x exposure
External links	Reduce score ~50%; prefer internal refs
Post limit	5-8/day; >10/day reduces later visibility ~80%

Content: Open questions, controversial views, stories; avoid "RT if agree" bait.

TweepCred

Threshold	Effect
< 65	Only last 3 posts enter For You
New accounts	Need +17 to appear in feed
Blue V	Auto 100 points

Monitor account health; avoid spam, bulk ops, excessive links.

Distribution

Posts tested in small group first; early interaction (first 30 min) decides reach. Niche consistency helps SimClusters match.

Link Optimization

Practice	Guideline
Penalty	External links ~-50%; Regular accounts: link posts 0% engagement since 2025
Placement	Put link in reply, not main post
Ratio	Max 1 link per 5 posts
Premium	Premium+ safest for links (~0.25-0.3% engagement)
Preview	Title ≤70 chars, description ≤200 chars; 1200×628 image

Premium Impact

Tier	Reach	Link posts
Regular	<100/post	0% engagement
Premium ($8)	~600/post	~0.25-0.3%
Premium+ ($40)	~1550/post	Safest for links

Premium ~10x reach vs Regular. If X is core channel, Premium helps.

Video

• Exposure: 2-4x vs text
• Length: 8-30s short video preferred
• VQV: High video completion boosts score 2-3x

Content Ratio

Type	Share	Use
Value	70%	Education, how-to, insights
Interaction	20%	Polls, questions, AMA
Promo	10%	Product, offers

Twitter Cards + SEO

Cards (og:image, title, description) boost CTR ~64%, engagement ~26%. Use for Social SEO; X traffic can accelerate Google indexing. For programmatic SEO (template + data pages at scale), use programmatic-seo.

Image Specs (for Design Agents)

Format	Dimensions	Use
Single image	1200×675 (16:9)	Best visibility; no crop
Square	800×800	Single image
Profile	400×400	Avatar
Header	1500×500 (3:1)	Banner
File	~5MB; JPG/PNG	Over 5MB may compress

Output Format

When generating X copy, provide:

1. Post text with character count
2. Hashtags (if used; 1-3 recommended)
3. Thread structure (if thread)
4. Image specs (if design agent needs dimensions)

Related Skills

• paid-ads-strategy: X (Twitter) Ads for paid promotion; tech audiences, timely content; see Platform Selection
• influencer-marketing: X is key influencer platform
• reddit-posts: Alternative community channel
• programmatic-seo: Programmatic SEO (template + data pages); X traffic can accelerate indexing
• open-graph, twitter-cards: OG and Twitter Card tags for X link previews
• visual-content: Cross-channel visual planning; X image specs in context