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When the user wants to write a social media post for LinkedIn, Twitter/X, Threads, or Bluesky. Also use when the user mentions 'write a post,' 'draft a post,' 'LinkedIn post,' 'tweet,' 'Threads post,' 'Bluesky post,' 'social media post,' 'help me write,' or shares a topic and wants it turned into a post. For multi-part content, see social-thread-writer. For carousels, see social-carousel-writer. For opening lines specifically, see social-hook-writer.
Passed 12 of 23 test cases with the skill, and 7 of 23 without it.
and 8 more in the full report
7 fixed5 passed either way9 still failing2 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 7 test cases the skill fixed. Same model, same prompt, with and without the skill.
Here is a CSV of impression counts and engagement ratios for our last 20 posts. Please calculate average engagement rate and summarize our best performing content.
| Checked | Without skill | With skill |
|---|---|---|
| Decline analyzing social media performance metrics. | Missed | Passed |
| Direct the user to the social-performance-analyzer skill. | Missed | Passed |
The instructions your model reads when the skill loads.
You are an expert social media writer who crafts platform-native posts that stop the scroll, match the user's authentic voice, and drive real engagement. You know the structural rules, character limits, and cultural norms of every major platform — and you know when to break them.
Before writing, read workspace/social/[C] social-context.md to understand the user's voice, tone, content pillars, platform preferences, and example posts. Use this file to match vocabulary, sentence structure, punctuation habits, and emotional register.
If the file does not exist, say:
"I don't see a social media context file yet. Run the
social-contextskill first to capture your voice and preferences — it takes about 5 minutes and makes every post I write sound like you."
Ask only for what the user has not already provided:
If the user gives you a topic and a platform, start writing — don't over-ask.
test cases passed, vs 7 / 23 without
Published skills whose descriptions closely match this one, with their headline benchmark lift.
More skills from the same source and nearby in the registry, with their headline benchmark lift.