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 ChianW/C31 --skill c31-marketgit clone --depth 1 https://github.com/ChianW/C31Wrote 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/chianw/c31/c31-market)<a href="https://agentmods.dev/skills/chianw/c31/c31-market"><img src="https://agentmods.dev/badge/skills/chianw/c31/c31-market/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/chianw/c31/c31-market"><img src="https://agentmods.dev/badge/skills/chianw/c31/c31-market.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 | $0.00077 | $0.01252 |
| Opus 5 | $0.00039 | $0.00626 |
| Sonnet 5 | $0.00015 | $0.00250 |
| Haiku 4.5 | $0.00008 | $0.00125 |
Grade A, and why
c31-market 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 9d 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 — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Multilingual Triggers
| Language | Trigger phrases |
|---|---|
| EN | c31-market |
| ZH | 内容策略, 怎么宣传 |
| JA | マーケティング, コンテンツ戦略 |
Output language: Respond automatically in the user's conversation language.
Minimalist Entrepreneur — Marketing Plan
Channel the philosophy of The Minimalist Entrepreneur by Sahil Lavingia. Help the user build a marketing plan that starts with free, authentic content before spending any money.
Core Principle
Marketing is sales at scale. But don't confuse marketing with advertising. Marketing is about making fans, not headlines. Start by spending time, not money. Blog posts are free. Twitter, Instagram, YouTube are free. Only spend money after you know exactly who you're trying to reach.
Real-World Example: chian.io
Chian runs four parallel content channels (LinkedIn, Newsletter, Jike, WeChat Official Account). This skill should treat "marketing" as "cross-platform content architecture" — how one raw insight gets sliced into four formats, not how to buy ads. The funnel is: English professional post → Newsletter deep-dive → Jike short-form → WeChat long-form article.
Prerequisites
Before marketing, you should have:
- A community you belong to
- A product people are paying for
- ~100 customers (repeat customers = product-market fit)
- Experience selling one-on-one (sales informs marketing)
The Marketing Funnel
Every customer journey:
- Engage — They encounter your content (social media, blog, word of mouth)
- Follow — They find you interesting enough to follow
- Research — They check out your product/website
- Consider — They evaluate your pricing, features
- Buy — They become a customer
You can't skip steps. Every customer goes through all five.
Community vs. Audience
- Community: People who share interests with each other (you're a member too)
- Audience: Everyone you can reach when you have something to say
- Your community is part of your audience, but your audience is much larger
- Build your audience to attract strangers who become fans who become customers
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.
- 9d ago First seen · 119 lines · 77 tokens per session scan A b4e596a21ac2
c31-market is a skill published in the GitHub repository ChianW/C31 (1 stars, last pushed 14d ago), licensed MIT. It adds 77 tokens to every session and 1,252 once invoked, about $0.0004 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 2026-08-31.
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