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Stripe Expert

Stripe Expert is a skill for Claude Code, Codex from yuchenbigpen1/normies. It costs 39 tokens per session (5,840 once invoked), scanned A, original, Apache-2.0.

A set of operating guidelines for managing business revenue in Stripe, a service for payments, subscriptions, invoices, and related financial tasks. It is intended for business operators rather than developers building integrations.

In plain words
What is it for?
Use it for revenue metrics, subscriptions, invoices, refunds, payment disputes, payment links, coupons, reports, and data exports.
Why use it?
It helps interpret Stripe's dashboard and workflows while avoiding costly mistakes, such as confusing test transactions with real payments.

Skill for Claude CodeCodex

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

not rated 4repo 8mo ago A scan 39 tokens original Apache-2.0

Good fit Use it for revenue metrics, subscriptions, invoices, refunds, payment disputes, payment links, coupons, reports, and data exports.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/yuchenbigpen1/normies/stripe-expert
View source ↗ yuchenbigpen1/normies landing.normies.work
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 yuchenbigpen1/normies --skill stripe-expert
Clone the repo
git clone --depth 1 https://github.com/yuchenbigpen1/normies

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 Stripe Expert

README.md
[![agentmods](https://agentmods.dev/badge/skills/yuchenbigpen1/normies/stripe-expert/github.svg)](https://agentmods.dev/skills/yuchenbigpen1/normies/stripe-expert)
Your own site
<a href="https://agentmods.dev/skills/yuchenbigpen1/normies/stripe-expert"><img src="https://agentmods.dev/badge/skills/yuchenbigpen1/normies/stripe-expert/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.

agentmods 80×15 button for Stripe Expert

Your own site · 80×15
<a href="https://agentmods.dev/skills/yuchenbigpen1/normies/stripe-expert"><img src="https://agentmods.dev/badge/skills/yuchenbigpen1/normies/stripe-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,840 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 original No closer match found 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 $0.00039 $0.05840
Opus 5.5 $0.00016 $0.02336
Sonnet 5.5 $0.00008 $0.01168
Haiku 4.5 $0.00004 $0.00584

Measured 2mo ago against content hash eaa344201aeb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Stripe Expert 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 2mo 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.

packages/shared/assets/workspace-template/skills/stripe-expert/SKILL.md · 579 lines

How it starts

The opening of the file, as written. The whole thing — 579 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Stripe Expert

You are an expert at helping non-technical business operators manage their revenue operations in Stripe. You understand Stripe's products, dashboard, and business workflows deeply, and can translate business needs into the right Stripe actions.

This skill is NOT about connecting to Stripe — Normies handles that via the Stripe MCP source or API source. This skill gives you the domain knowledge to do great work once connected.

When to Use This Skill

  • User asks about revenue metrics (MRR, ARR, churn, etc.)
  • User needs to manage subscriptions, invoices, or refunds
  • User wants to understand their Stripe dashboard data
  • User asks about payment operations (disputes, payment links, coupons)
  • User needs help with Stripe reporting or data export
  • User mentions payment processing, billing, or revenue questions

Critical Safety Rules

Before doing ANYTHING in Stripe, follow these rules:

Test Mode vs. Live Mode

This is the most important concept in Stripe. Getting it wrong costs real money.

Mode What It Does API Keys Start With Dashboard URL
Test mode Fake transactions, no real money moves sk_test_ / pk_test_ Shows "TEST DATA" banner
Live mode Real transactions, real money sk_live_ / pk_live_ No banner — this is production

Rules:

  1. Always confirm which mode you're in before making any changes
  2. If the user's API key starts with sk_live_ — warn them before every write operation
  3. Never create test data in live mode — always switch to test mode first
  4. When practicing or exploring — always use test mode
  5. Test card numbers only work in test mode — 4242 4242 4242 4242 is the standard test card

What Operators Should NEVER Do

  • Never share or log API secret keys (sk_live_* or sk_test_*) — these give full account access
  • Never store raw card numbers — that violates PCI compliance (Stripe handles this for you)
  • Never delete customers with active subscriptions — cancel subscriptions first
  • Never modify live webhooks without understanding the downstream impact
  • Never ignore disputes — you have limited time to respond (usually 7-21 days)

Read the full file on GitHub · 579 lines

Files

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.

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. 2mo ago First seen · 579 lines · 39 tokens per session scan A eaa344201aeb

Subscribe to this mod's changes

Stripe Expert is a skill published in the GitHub repository yuchenbigpen1/normies (4 stars, last pushed 8mo ago), licensed Apache-2.0. It adds 39 tokens to every session and 5,840 once invoked, about $0.0002 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 2026-08-31.

Claude CodeFinance and fintechai-agentscodex-clicontext-engineeringelectronmcp
Related

Stripe Expert compared with skills from other repositories

Stripe Expert next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
Stripe Expertyuchenbigpen1/normiesSkill48mo agoApache-2.0A39Claude Code, Codex
bmad-founder-agent-advisorbmad-code-org/BMAD-METHODSkill55k2d agononeA108Claude Code, Codex
finance-1099-prepFerroxLabs/waylandSkill6182d agoAGPL-3.0A63Claude Code, Codex
t-investnyxandro/t-invest-skillSkill489d agoMITB147Claude Code, Codex
wayland-build-investor-deckFerroxLabs/waylandSkill6182d agoAGPL-3.0A131Claude Code, Codex
wayland-morning-reportFerroxLabs/waylandSkill6182d agoAGPL-3.0A127Claude Code, Codex
biofuels-biodiesel-technology-managerwonsukchoi/domain-expertsSkill273d agoMITA115Claude Code, Codex