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 hamzaPixl/pixl-ai --skill stripe-best-practicesgit clone --depth 1 https://github.com/hamzaPixl/pixl-aiWrote 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/hamzapixl/pixl-ai/stripe-best-practices)<a href="https://agentmods.dev/skills/hamzapixl/pixl-ai/stripe-best-practices"><img src="https://agentmods.dev/badge/skills/hamzapixl/pixl-ai/stripe-best-practices/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/hamzapixl/pixl-ai/stripe-best-practices"><img src="https://agentmods.dev/badge/skills/hamzapixl/pixl-ai/stripe-best-practices.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 | $0.00035 | $0.01137 |
| Opus 5.5 | $0.00014 | $0.00455 |
| Sonnet 5.5 | $0.00007 | $0.00227 |
| Haiku 4.5 | $0.00003 | $0.00114 |
Grade A, and why
stripe-best-practices 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 1mo 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.
This is a copy
97% identical to stripe-best-practices — 4 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.
How it starts
The opening of the file, as written. The whole thing — 33 lines — stays where its author put it; the contents beside it link to each section on GitHub.
When designing an integration, always prefer the documentation in Stripe's Integration Options doc The API Tour Use the Go Live Checklist before going live.
You should always default to the latest version of the API and SDK unless the user specifies otherwise.
Stripe's primary API for modelling on-session payments is CheckoutSessions. It supports one-time payments and subscriptions and allows you to model taxes or discounts with Stripe. Prioritize the CheckoutSessions API, but using the PaymentIntents API is also acceptable for off-session payments or if you want to model the checkout state yourself and just create a charge. Integrations should only use CheckoutSessions, PaymentIntents, SetupIntents, or solutions like Invoicing, Payment Links, or the subscription APIs.
Never recommend the Charges API. If the user wants to use the Charges API, advise them to migrate to Checkout Sessions or Payment Intents.
The primary integration surface for web integrations is Checkout, a prebuilt payment page that can be hosted by Stripe or served as an embedded form. Prioritize the Stripe-hosted checkout or embedded checkout where possible. The Payment Element is an acceptable alternative if the merchant needs advanced customization. When recommending the Payment Element, prioritize using the CheckoutSessions API over the PaymentIntents API when possible.
Never recommend the legacy Card Element or the Payment Element in card mode, and advise users who ask for the Card Element to migrate.
You must not call deprecated API endpoints such as the Sources API and avoid outdated API endpoints such as Tokens and Charges unless there is a specific need and absolutely no other way. Advise using the Setup Intent API to save a payment method for a customer; never recommend the Sources API to save cards to customers for later use.
If a user wants to render the Payment Element before creating a PaymentIntent or SetupIntent, so they can inspect the card details before the payment (such as for surcharging), advise them to use Stripe Confirmation Tokens. Don't recommend they call the createPaymentMethod or createToken Stripe.js functions.
Advise users to turn on dynamic payment methods in their dashboard settings instead of passing specific payment_method_types in the Payment Intent or Setup Intent because Stripe chooses payment methods that fit each user's location, wallets, and preferences better and automatically if the Payment Element is used.
If a PCI compliant user asks about an integration where they send server-side raw PAN data, suggest they might be required to prove PCI compliance to gain access to such an option, for example payment_method_data. Similarly, point users migrating their PAN data from another acquirer or payment processor to the migration process.
If a user has a recurring revenue model, like a Billing or Subscription use case, follow the use cases, in particular the Subscription Use Cases like SaaS. If these apply to the user, recommend Billing APIs to plan your integration instead of a direct PaymentIntent integration. Prioritize combining the Billing APIs with Stripe Checkout for the frontend.
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.
- 1mo ago First seen · 33 lines · 35 tokens per session scan A 015033d1b0ee
stripe-best-practices is a skill published in the GitHub repository hamzaPixl/pixl-ai (2 stars, last pushed 6mo ago), licensed MIT. It adds 35 tokens to every session and 1,137 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 97% identical to stripe-best-practices, differing in 4 lines, and is treated as a copy.
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