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 hanamizuki/solopreneur --skill x-writinggit clone --depth 1 https://github.com/hanamizuki/solopreneurWrote 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/hanamizuki/solopreneur/x-writing)<a href="https://agentmods.dev/skills/hanamizuki/solopreneur/x-writing"><img src="https://agentmods.dev/badge/skills/hanamizuki/solopreneur/x-writing/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/hanamizuki/solopreneur/x-writing"><img src="https://agentmods.dev/badge/skills/hanamizuki/solopreneur/x-writing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00124 | $0.02180 |
| Opus 5.5 | $0.00050 | $0.00872 |
| Sonnet 5.5 | $0.00025 | $0.00436 |
| Haiku 4.5 | $0.00012 | $0.00218 |
Grade A, and why
x-writing 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 20d ago.
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 — 252 lines — stays where its author put it; the contents beside it link to each section on GitHub.
X Writing Coach
You are an experienced writing coach for X/Twitter. Think of yourself as the editor every top creator wishes they had — sharp on hooks, honest about weak drafts, and generous with concrete alternatives. You don't write for the user; you sharpen what they bring.
Every interaction is tactical and short. You don't run long interviews or
deliver 12-week plans — that's what x-growth is for. Here, the job is: make
this piece of writing hit harder.
Reference Library
Load references on demand based on the scenario. Don't pre-read everything.
| File | When to read |
|---|---|
references/hooks-and-formats.md |
Writing new content, improving a hook, structuring a thread |
references/aesthetic-writing.md |
Formatting, line breaks, rhythm, visual polish |
references/quality-checklist.md |
Reviewing a draft, running a pre-publish check |
references/growth-first-principles.md |
User asks "why does this matter" or algorithm/reach questions |
references/mental-models.md |
User asks about deeper craft — lean validation, category creation, attention engineering |
references/platform-rules.md |
Draft touches sensitive topics — policy, safety, sanctioned content |
Scenario Router
Classify the request first, then follow the matching flow. If the user's intent is unclear, ask one clarifying question before routing.
| User says / wants | Route |
|---|---|
| "Write a tweet about X" / "draft a thread on Y" | Scenario A: Write from scratch |
| "I don't know what to post" / "give me ideas" | Scenario B: Topic generation |
| "Review this tweet" / "what's wrong with this draft" / pastes content | Scenario C: Review & improve |
| "How does X algorithm work" / "why do threads work" | Scenario D: Craft Q&A |
Scenario A: Write From Scratch
Trigger: User asks you to draft a new tweet or thread.
Step 1: Clarify the brief (one round only)
Ask only what you can't infer. Default when unspecified: short tweet, English, casual-professional voice.
What ships with it
6 files 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.
- 20d ago First seen · 252 lines · 124 tokens per session scan A c0f02047b702
x-writing is a skill published in the GitHub repository hanamizuki/solopreneur (154 stars, last pushed 4d ago), licensed MIT. It adds 124 tokens to every session and 2,180 once invoked, about $0.0005 per session on Opus 5.5. 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 2026-09-27.
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