c31-community

c31-community is a skill for Claude Code, Codex from ChianW/C31. It costs 81 tokens per session (803 once invoked), scanned A, a copy of find-community, MIT.

A community-finding guide for choosing an audience before building a small business. It helps connect groups you already belong to with problems they may pay to solve.

In plain words
What is it for?
Use it to map your professional, hobby, online, or local communities, compare their business potential, and choose which audience to serve first.
Why use it?
It reduces the guesswork of deciding whom to serve and whether an existing audience could support a business idea.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to map your professional, hobby, online, or local communities, compare their business potential, and choose which audience to serve first.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/chianw/c31/c31-community
Install

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.

Any agent
npx skills add ChianW/C31 --skill c31-community
Clone the repo
git clone --depth 1 https://github.com/ChianW/C31

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for c31-community

README.md
[![agentmods](https://agentmods.dev/badge/skills/chianw/c31/c31-community.svg)](https://agentmods.dev/skills/chianw/c31/c31-community)
Your own site
<a href="https://agentmods.dev/skills/chianw/c31/c31-community"><img src="https://agentmods.dev/badge/skills/chianw/c31/c31-community.svg" alt="Measured on agentmods" height="20"></a>
Per session 81 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 803 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 84% copy Near-identical to another mod in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00081 $0.00803
Opus 5 $0.00041 $0.00402
Sonnet 5 $0.00016 $0.00161
Haiku 4.5 $0.00008 $0.00080

Measured 8d ago against content hash 9edd4cc68cad, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

c31-community 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 8d 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.

Origin

This is a copy

84% identical to find-community — 37 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/product/c31-community/SKILL.md · 68 lines

How it starts

The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Multilingual Triggers

Language Trigger phrases
EN c31-community
ZH 找社区, 选社区, 目标用户
JA コミュニティを見つける, ターゲット選定

Output language: Respond automatically in the user's conversation language.

Minimalist Entrepreneur — Community Finder

Channel the philosophy of The Minimalist Entrepreneur by Sahil Lavingia. Help the user find their community — the foundation of a minimalist business.

Core Principle

Start with community, not with a product idea. The best minimalist businesses are built by people who are already deeply embedded in a community and notice a problem worth solving. You don't "find" a community — you already belong to several.

Real-World Example: chian.io

Chian operates across four parallel identities (investor, podcaster, mastermind organizer, academic applicant). This skill should map those existing communities to potential minimalist business opportunities, not treat him as a blank slate.

Framework: Identify Your Communities

Walk the user through these questions:

  1. What communities are you already a part of? Think broadly: professional groups, hobby communities, online forums, local organizations, identity-based groups, alumni networks, etc.
  2. Where do you spend your time online? Reddit, Discord, Slack groups, Twitter/X, forums, Substack communities, etc.
  3. What problems do you hear people complain about repeatedly? The best business ideas come from persistent, recurring pain points within communities you understand deeply.
  4. Which of these communities would you be excited to serve for years? This isn't a weekend project — you'll be serving these people for a long time.

Evaluation Criteria

For each potential community, help evaluate:

  • Are you a genuine member? You should understand the community's language, values, and culture. You should be contributing, not just lurking.
  • Is the problem painful enough that people would pay for a solution? Not every problem is a business. The bar is: would people exchange money for this?
  • Can you reach these people? Do you know where they gather? Can you contact them directly?
  • Is the community large enough but not too large? You want a niche you can dominate, not a market so broad you'll never stand out.

Read the full file on GitHub · 68 lines

Changes

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.

  1. 8d ago First seen · 68 lines · 81 tokens per session scan A 9edd4cc68cad

Subscribe to this mod's changes

c31-community is a skill published in the GitHub repository ChianW/C31 (1 stars, last pushed 13d ago), licensed MIT. It adds 81 tokens to every session and 803 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 84% identical to find-community, differing in 37 lines, and is treated as a copy.

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