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Agent skill

Billing Money Rules

by coleam00 in coleam00/helpline

A skill your agent uses when creating or editing code under services/billing.

No licenceAuto-check passed

Install Billing Money Rules

skills CLI
$ npx skills add coleam00/helpline --skill billing-money-rules -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install coleam00/helpline billing-money-rules --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/coleam00/helpline.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/billing-money-rules .claude/skills/billing-money-rules && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
billing-money-rules
GitHub stars
113
Token cost
~281 tokens
SKILL.md length
119 words
Files
2 (incl. references)
Skills in repo
4
Repo updated
First seen
Licence
None found

At a glance

A skill your agent uses when creating or editing code under services/billing.

  • Works in 4 steps: Money is integer cents. Never a float,… → Plan economics live in one place —… → Every money/plan violation raises… → …
  • Editing code under services/billing
  • SKILL.md covers The rules (load these every… and When you need the detail
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Billing Money Rules is an agent skill from coleam00/helpline. Use when creating or editing code under services/billing. Enforces Helpline's money-handling rules — integer cents only, seat limits, and BillingError for every violation.

Its SKILL.md is about 280 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/money-conventions.md`).

The repository describes itself as: Demonstration codebase for building the AI Layer (CLAUDE.md hierarchy, hooks, skills, LSP, MCP, plugin) — companion repo for the 'How Claude Code works in large codebases' video.

When your agent uses it

  • Editing code under services/billing

Example prompts

  • “/billing-money-rules”

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. Money is integer cents. Never a float, never dollars. Variables and
  2. Plan economics live in one place — _SEAT_LIMITS and
  3. Every money/plan violation raises BillingError (HTTP 402). Never
  4. Inactive subscriptions cannot be invoiced.

What it can do on your machine

Read from SKILL.md and the folder at commit 456234a. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Billing Money Rules loads about 281 tokens when it runs, and up to ~592 if it reads all its reference files. Until then it costs about 48 tokens; SKILL.md has 119 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~48
When it runs · the whole SKILL.md, loaded when a task matches
~281
With references · SKILL.md plus every file in references/, read only if the agent opens them
~592

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 119 words (~281 tokens).

“This skill activates when work is happening in services/billing. It exists so money bugs never ship.”

— opening of SKILL.md by coleam00
name
billing-money-rules
paths
services/billing/**

Read the full SKILL.md on GitHub

Files

SKILL.md and 1 other file (references) in .claude/skills/billing-money-rules of coleam00/helpline.

  • SKILL.md
  • references/money-conventions.md

Open the folder on GitHubat commit 456234a

Compare with similar skills

Billing Money Rules next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Billing Money Rules compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Billing Money Rules this skillcoleam00/helpline113—~281Automated safety check: PassNone
Billing Automationwshobson/agents40k13 repos~473Automated safety check: PassMIT
Customer Billing Opsaffaan-m/ECC277k2 repos~1.1kAutomated safety check: PassMIT
Finance Billing Opsaffaan-m/ECC277k1 repos~958Automated safety check: PassMIT
cmux Billing Runbookmanaflow-ai/cmux28k—~2.8kAutomated safety check: PassCustom licence
Invoices Billingsickn33/agentic-awesome-skills47k1 repos~4.4kAutomated safety check: PassMIT

Similar skills

  • Billing Automation

    wshobson/agents

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    40k GitHub starsUsed in 13 repos~473 tokens
    Backend & APIsAuto-check passed

  • Customer Billing Ops

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    Operate customer billing workflows such as subscriptions, refunds, churn triage, billing-portal recovery, and plan analysis using connected billing tools like Stripe.

    277k GitHub starsUsed in 2 repos~1.1k tokens
    Backend & APIsAuto-check passed

  • Finance Billing Ops

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    Evidence-first revenue, pricing, refunds, team-billing, and billing-model truth workflow for ECC.

    277k GitHub starsUsed in 1 repo~958 tokens
    Auto-check passed

  • cmux Billing Runbook

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    Runbook for the cmux billing code: Stripe Checkout, customer portal, subscription changes, webhooks and how Pro plan entitlement is resolved from Stack metadata.

    28k GitHub stars~2.8k tokensUpdated today
    Backend & APIsAuto-check passed

  • Invoices Billing

    sickn33/agentic-awesome-skills

    Invoice and billing register: invoice number, client, project, issue and due dates, subtotal, discount, tax and withholding, total, payments, balance and aging.

    47k GitHub starsUsed in 1 repo~4.4k tokens
    Documents & OfficeAuto-check passed

  • Bill Gates

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    47k GitHub starsUsed in 2 repos~352 tokens
    Auto-check passed

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  • API Add Route

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    113 GitHub stars~262 tokensUpdated 4 mo ago
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  • Scoped Tests

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    Use after changing code, before claiming work is done — run the test command scoped to what you changed instead of the whole suite, to avoid the timeout and context waste of full-suite runs on a…

    113 GitHub stars~288 tokensUpdated 4 mo ago
    Auto-check passed

Questions about Billing Money Rules

What does Billing Money Rules do?

A skill your agent uses when creating or editing code under services/billing. Billing Money Rules is an agent skill from coleam00/helpline. Use when creating or editing code under services/billing.

When should I use Billing Money Rules?

Billing Money Rules fits situations like: editing code under services/billing.

How do I install Billing Money Rules in Claude Code?

Run `npx skills add coleam00/helpline --skill billing-money-rules -a claude-code`. Or copy the skill folder (.claude/skills/billing-money-rules in coleam00/helpline) into .claude/skills/billing-money-rules in your project. Claude Code loads it when a task matches its description.

How do I install Billing Money Rules in Codex?

Run `npx skills add coleam00/helpline --skill billing-money-rules -a codex`. Or copy the skill folder (.claude/skills/billing-money-rules in coleam00/helpline) into .agents/skills/billing-money-rules in your project. Codex loads it when a task matches its description.

Can I use Billing Money Rules in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add coleam00/helpline --skill billing-money-rules -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/billing-money-rules, .gemini/skills/billing-money-rules, .github/skills/billing-money-rules and .opencode/skills/billing-money-rules in your project.

What does Billing Money Rules need to run?

SKILL.md names no scripts, command-line tools or credentials: Billing Money Rules is instructions for the agent only.

Does Billing Money Rules access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Billing Money Rules safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Billing Money Rules use?

No licence was found for Billing Money Rules or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Billing Money Rules use?

About 281 tokens (SKILL.md is roughly 1.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 311 tokens, read only when the agent opens those files.

What are the alternatives to Billing Money Rules?

Skills that share tags, products or a category with Billing Money Rules: Billing Automation (wshobson/agents, 40k stars), Customer Billing Ops (affaan-m/ECC, 277k stars), Finance Billing Ops (affaan-m/ECC, 277k stars) and cmux Billing Runbook (manaflow-ai/cmux, 28k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Billing Money Rules?

coleam00 (a GitHub user) maintains it in coleam00/helpline, which has 113 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on May 20, 2026.

Source: coleam00/helpline on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.