Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add sergebulaev/x-skills --skill x-post-writergit clone --depth 1 https://github.com/sergebulaev/x-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/sergebulaev/x-skills/x-post-writer)<a href="https://agentmods.dev/skills/sergebulaev/x-skills/x-post-writer"><img src="https://agentmods.dev/badge/skills/sergebulaev/x-skills/x-post-writer/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/sergebulaev/x-skills/x-post-writer"><img src="https://agentmods.dev/badge/skills/sergebulaev/x-skills/x-post-writer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00120 | $0.01735 |
| Opus 5 | $0.00060 | $0.00868 |
| Sonnet 5 | $0.00024 | $0.00347 |
| Haiku 4.5 | $0.00012 | $0.00173 |
Grade A, and why
x-post-writer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 123 lines — stays where its author put it; the contents beside it link to each section on GitHub.
X Post Writer
Ship a single tweet, or a tight 2-3 tweet micro-thread, using hook shapes that actually travel on X in 2026. Single-tweet formulas land a complete punch in the first line, because X has no "see more" fold.
When to use
- User says "write me a tweet about X"
- User has a topic or a rough one-liner and wants a sharper hook
- User wants to pick a proven single-tweet shape and fill in their voice
- User wants a quick draft that auto-publishes on approval
Formulas this skill uses (single-tweet shapes)
| Code | Formula | Primary goal | Best for |
|---|---|---|---|
| X1 | One-Liner Contrarian | reposts | a sharp, defensible against-the-grain take |
| X2 | Data-Point Hook | bookmarks | one odd-precision number that reframes a thing |
| X3 | Build-in-Public Confession | replies | a real metric from your own work, ugly ones included |
| X4 | Quote-Tweet Dunk-with-Value | reposts | adding a layer to someone else's take (quote tweet) |
| X5 | Mini-List Tweet | bookmarks | a scannable list that fits in one tweet |
| X6 | Relatable Cold-Open | likes | a specific shared moment, no setup |
| X11 | Third-Person Case-Study Flex | reposts | someone else's absurd, specific result as anyone-could-copy bait |
Full skeletons in ../../references/hook-formulas.md. For long-form tweetstorms
(X7-X10), use x-thread-builder. X11 was validated as the top-recurring winning
shape in a ~450-tweet corpus (July 2026); prefer it over a first-person "How I"
when the result you are citing is someone else's.
Pick by goal first
| Goal | Reach for |
|---|---|
| Replies | X3, X1 |
| Reposts | X1, X4, X11 |
| Likes | X6 |
| Bookmarks | X2, X5, X11 |
Steps
Voice profile first (all drafts). If ../../references/voice-profile.md has filled: yes, load it and match the user's voice fingerprint, hard rules, and CTA/link style throughout. If it is not filled, mention once that x-humanizer --mode profile can learn their voice from a few posts, then proceed with the generic voice rules.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- today Changed cd8479b254a4
- 3d ago Changed · +6 lines 9600227c4aa7
- 10d ago First seen · 117 lines · 120 tokens per session scan A 4ce4c73c97f6
x-post-writer is a skill published in the GitHub repository sergebulaev/x-skills (66 stars, last pushed yesterday), licensed MIT. It adds 120 tokens to every session and 1,735 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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tt-humanizer
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tiktok-marketing
Plan, script, caption, and publish short-form video for TikTok. Use when the user wants to write the first 1-3 second hook (spoken line plus on-screen text), draft a caption under 2,200 chars with TikTok settings and hashtags, ride a trending sound without being cringe, strip AI tells from a spoken script to sound…