post-create
Skill17 starsChanged 7 months agoMITView on GitHub
Write individual platform-native posts for X, LinkedIn, Instagram, and TikTok — with proper hooks, value-dense bodies, and CTAs optimized to each platform's format, audience, and algorithm.
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The file
We split this skill into the rules it gives an agent
2 rules. About 0 are common, 2 are distinctive, and 0 are very specific to this project.
≈0
Common · estimate
Many files like this have a rule of this kind.
≈2
Distinctive · estimate
This author's own choices. Worth a look.
0
Very specific
Tied to their project's names, files or tools. Probably skip.
- Common
- Distinctive
- Very specific
- Distinctive: line 21
Write a single platform-native post that earns attention, delivers value, and drives action.
- Distinctive: line 118
Read the post out loud. Does it sound human?
≈ “Common” is an estimate: at least 1 in 5 of the 350,495 skill files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
Files
Post Create
Write a single platform-native post that earns attention, delivers value, and drives action. Each platform demands different structure, length, and energy. A post written for X does not belong on LinkedIn, and vice versa. This skill produces posts that feel native, not cross-posted.
Purpose
The single biggest mistake brands make is writing one post and copying it to every platform. That doesn't save time — it wastes reach. This skill writes for the platform first, preserving the core message but expressing it in the format the audience expects to see there.
When to Use
- Content calendar says "post needed for [platform]"
- Founder sends a half-formed idea
- Quick-win opportunity (trending topic, timely take)
- Reply to a competitor post that deserves a standalone response
- Filling a flex slot in the weekly calendar
Inputs Required
- Topic or angle (from content calendar or founder input)
- Brand voice guide
- Target platform
- Any link, CTA, or hashtag requirements
- Optional: hook draft (can delegate to
hook-write)
Quick Reference
| Platform | Char Limit | Hook Style | Link Rules | Hashtag Rules | Best Format |
| X | 280 (premium: 25K) | First 3 words are everything | Avoid in first tweet; use reply or final tweet | 0-1 per post | Short takes, hot takes, observations |
| 3,000 (ideal: 900-1,200) | First 2 lines before "see more" | Anywhere, ideally after hook | 3-5 at end | Stories, lessons, frameworks | |
| 2,200 (ideal: 125-150) | Visual + first line of caption | Bio link only (no clickable links in caption) | 5-10 relevant + 2-3 branded | Visual-led, micro-blogging in captions | |
| TikTok | 4,000 caption (video leads) | First 1.5s of video + text overlay | Bio link only | 3-5 trending | Video-first, captions secondary |
Procedure
- Load inputs. Topic, brand voice guide, platform rules, CTA requirements.
- Write the hook. The hook is the single most important sentence. Delegate to
hook-writefor 5-10 variations, or write one directly:- X: First 3-5 words must stop the scroll. Lead with the strongest word.
- LinkedIn: First line before "see more." Tease without clickbait.
- IG: Visual does 70% of the hook work. Caption hook reinforces it.
- TikTok: First 1.5 seconds of video + text overlay hook. Caption supports.
- Write the body:
- X: One clear idea. No fluff. Line breaks for visual whitespace.
- LinkedIn: Story → lesson → applicability. Single-sentence paragraphs.
- IG: Value-dense. First line delivers immediately.
- TikTok: Video does the work. Caption adds context or CTA.
- Write the CTA. Delegate to
cta-craftif needed:- X: "Follow for more" or "Reply with your take" or link in reply
- LinkedIn: "Agree? Disagree?" or "Save this" or link
- IG: "Save," "Share to stories," "Comment your [X]"
- TikTok: "Follow for part 2," "Link in bio"
- Apply platform formatting:
- X: No markdown. Line breaks only. 0-1 hashtag.
- LinkedIn: No raw markdown. 3-5 hashtags at end.
- IG: No clickable links. Hashtags in first comment or end.
- TikTok: Caption short. 3-5 trending hashtags.
- Run brand voice check. Does the post sound like the brand or like a generic AI output? Would the founder actually say this?
Output Format
## Post: [Platform]
[Full post text, formatted exactly as it should appear on the platform]
---
**Platform:** [X / LinkedIn / IG / TikTok]
**Pillar:** [Education / POV / Proof / BTS / CTA]
**Hook type:** [Question / Contrarian / Statistic / Story / Observation]
**CTA:** [Follow / Reply / Save / Link / DM / Share]
**Best posting time:** [Day + time window]
**Visual suggestion:** [Image/video idea if applicable]
**Voice check:** [Passes brand voice? Y/N + brief note]Done Criteria
The skill is complete when:
- Post text is formatted exactly as it should appear on the target platform
- Character count is within platform limits
- Hook earns its place (it's specific, not generic)
- CTA is matched to post goal and value delivered
- Brand voice check passes (the founder would say this)
Pitfalls
- Writing one post and copying it to other platforms with minor tweaks
- Overwriting: 280 characters is a constraint, not a suggestion
- Underwriting: LinkedIn posts under 200 characters feel like tweets
- Hashtag vomit on Instagram (30 hashtags looks desperate)
- Forgetting that TikTok is video-first — no caption can save a bad video
Verification
Read the post out loud. Does it sound human? Count filler words ("really," "very," "actually," "just") — remove them. Check character count against platform limits. Does the hook make you want to read the next line?
Example
Input: Topic: "Most cold outreach fails because it's not personal enough." Platform: X. Goal: engagement + new followers.
Output:
cold outreach isn't dead.
it's just lazy.
"hey saw you're a founder, check out my tool" = deleted in 0.5s
here's what actually works from 10,000+ cold emails analyzed:
1/ personalize the FIRST sentence
not the last one. first.
if you open with a template line, they never read past it.
start with something only THEY would say.
2/ lead with VALUE, not your product
"i can help you grow" = spam
"your pricing page has a pricing error that costs you 15%" = meeting booked
3/ make the ask TINY
not "hop on a call"
"reply with your top metric — i'll tell you if we can improve it"
follow for more cold outreach frameworks. next post goes deep on subject lines.Platform: X | Pillar: Education | Hook type: Contrarian | CTA: Follow
Does it work?
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