What is payment-integration?

A guide to adding payments using SePay for Vietnamese payments and Polar for global software subscriptions and billing. It covers checkout, webhooks, subscriptions, usage-based billing, and customer portals.

Use it to build checkout flows, VietQR or bank-transfer payments, subscription upgrades, usage metering, payment webhooks, product pricing, and automated customer benefits.

It helps connect payment events and customer access correctly, including local bank transfers, recurring charges, and changes to a subscription.

payment-integration — Skill for Kiro by ihatesea69

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 ihatesea69/kiro-kit --skill payment-integration

Clone the repo

git clone --depth 1 https://github.com/ihatesea69/kiro-kit

Made for: Kiro.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/ihatesea69/kiro-kit/payment-integration.svg)](https://agentmods.dev/skills/ihatesea69/kiro-kit/payment-integration)

Your own site

<a href="https://agentmods.dev/skills/ihatesea69/kiro-kit/payment-integration"><img src="https://agentmods.dev/badge/skills/ihatesea69/kiro-kit/payment-integration.svg" alt="Measured on agentmods" height="20"></a>

Per session 120 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,271 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.

Model	Per session	Once invoked
Fable 5.1	$0.00120	$0.01271
Opus 5	$0.00060	$0.00635
Sonnet 5	$0.00024	$0.00254
Haiku 4.5	$0.00012	$0.00127

Measured 3d ago against content hash a029c8f77e58, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

payment-integration 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 3d ago.

The scan reads SKILL.md. This mod also ships 4 executable files (scripts/checkout-helper.js, scripts/polar-webhook-verify.js, scripts/sepay-webhook-verify.js, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

.kiro/skills/payment-integration/SKILL.md · 128 lines

How it starts

The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Payment Integration

Implement payment processing with SePay (Vietnamese payments) and Polar (global SaaS monetization).

When to Use

Use when implementing:

Payment gateway integration (checkout, processing)
Subscription management (trials, upgrades, billing)
Webhook handling (payment notifications)
QR code payments (VietQR, NAPAS)
Usage-based billing (metering, credits)
Automated benefit delivery (licenses, GitHub access, Discord roles)
Customer portals (self-service management)
Bank transfer automation (Vietnamese banks)
Product catalogs with pricing

Platform Selection

Choose SePay for:

Vietnamese market (VND currency)
Bank transfer automation
VietQR/NAPAS payments
Local payment methods
Direct bank account monitoring

Choose Polar for:

Global SaaS products
Subscription management
Usage-based billing
Automated benefits (GitHub, Discord, licenses)
Merchant of Record (tax compliance)
Digital product sales

Quick Reference

SePay Integration

Overview & Auth: references/sepay/overview.md - Platform capabilities, API/OAuth2 auth, supported banks
API Reference: references/sepay/api.md - Endpoints, transactions, bank accounts, virtual accounts
Webhooks: references/sepay/webhooks.md - Setup, payload structure, verification, retry logic
SDK Usage: references/sepay/sdk.md - Node.js, PHP, Laravel implementations
QR Codes: references/sepay/qr-codes.md - VietQR generation, templates, integration
Best Practices: references/sepay/best-practices.md - Security, patterns, monitoring

Polar Integration

Overview & Auth: references/polar/overview.md - Platform capabilities, authentication methods, MoR concept
Products & Pricing: references/polar/products.md - Product types, pricing models, usage-based billing
Checkouts: references/polar/checkouts.md - Checkout flows, embedded checkout, links
Subscriptions: references/polar/subscriptions.md - Lifecycle, upgrades, downgrades, trials
Webhooks: references/polar/webhooks.md - Event types, signature verification, monitoring
Benefits: references/polar/benefits.md - Automated delivery (GitHub, Discord, licenses, files)
SDK Usage: references/polar/sdk.md - TypeScript, Python, PHP, Go, framework adapters
Best Practices: references/polar/best-practices.md - Security, patterns, monitoring

Read the full file on GitHub · 128 lines

Files

What ships with it

21 files 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.

3d ago First seen · 128 lines · 120 tokens per session scan A a029c8f77e58

Subscribe to this mod's changes

payment-integration is a skill published in the GitHub repository ihatesea69/kiro-kit (18 stars, last pushed 18d ago), licensed MIT. It adds 120 tokens to every session and 1,271 once invoked, about $0.0006 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 2026-09-03.

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