airwallex-billing-checkout

airwallex-billing-checkout is a skill for Claude Code from airwallex/airwallex-marketplace. It costs 130 tokens per session (5,040 once invoked), scanned B, original, Apache-2.0.

Integration guidance for Airwallex Billing Hosted Checkout, a hosted payment page for subscriptions, one-time payments, or saving a card. It covers creating products and prices, trials, coupons, success pages, webhooks, authentication, and API-version settings.

In plain words
What is it for?
Use it to add subscription checkout, one-off invoice payments, or card-saving setup to an application. It also helps configure billing resources, discounts, trials, webhooks, and troubleshooting.
Why use it?
It gives developers one documented path for connecting an application to Airwallex's billing checkout instead of assembling separate payment flows. It also explains how recurring billing differs from a one-time payment page.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the airwallex-dev plugin — 6 skills shipped together

Good fit Use it to add subscription checkout, one-off invoice payments, or card-saving setup to an application. It also helps configure billing resources, discounts, trials, webhooks, and troubleshooting.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/airwallex/airwallex-marketplace/airwallex-billing-checkout
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 airwallex/airwallex-marketplace --skill airwallex-billing-checkout
Clone the repo
git clone --depth 1 https://github.com/airwallex/airwallex-marketplace

Made for: Claude Code.

Or install airwallex-dev, the plugin that ships this one along with the rest of its 6 skills.

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 airwallex-billing-checkout

README.md
[![agentmods](https://agentmods.dev/badge/skills/airwallex/airwallex-marketplace/airwallex-billing-checkout/github.svg)](https://agentmods.dev/skills/airwallex/airwallex-marketplace/airwallex-billing-checkout)
Your own site
<a href="https://agentmods.dev/skills/airwallex/airwallex-marketplace/airwallex-billing-checkout"><img src="https://agentmods.dev/badge/skills/airwallex/airwallex-marketplace/airwallex-billing-checkout/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 airwallex-billing-checkout

Your own site · 80×15
<a href="https://agentmods.dev/skills/airwallex/airwallex-marketplace/airwallex-billing-checkout"><img src="https://agentmods.dev/badge/skills/airwallex/airwallex-marketplace/airwallex-billing-checkout.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 130 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,040 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 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 $0.00130 $0.05040
Opus 5 $0.00065 $0.02520
Sonnet 5 $0.00026 $0.01008
Haiku 4.5 $0.00013 $0.00504

Measured 13d ago against content hash e4bcced72b37, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade B, and why

airwallex-billing-checkout scanned grade B with 2 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 13d 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.

Sends data to an external URLmediumData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

const resp = await fetch( 'https://api-demo.airwallex.com/api/v1/billing_checkouts/create', { method: 'POST',

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

> These `curl` snippets use `AIRWALLEX_X_API_VERSION` (same as `.env`). Export it before running (`export AIRWALLEX_X_API_VERSION=...`) or load `.env` with your tooling; the value must satisfy [api-reference.md §2](refer
plugins/airwallex-dev/skills/airwallex-billing-checkout/SKILL.md · 373 lines

How it starts

The opening of the file, as written. The whole thing — 373 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Airwallex Billing Hosted Checkout

1. Description

This skill guides end-to-end integration of Airwallex Billing Hosted Checkout.

Canonical source: the API steps below distill Hosted Billing Checkout and the related Billing docs. Full mapping in references/api-reference.md. Those pages are authoritative. Prefer them if anything here drifts.

How it differs from HPP (Hosted Payment Page):

Dimension HPP (Online Payments) Billing Hosted Checkout
Core API PaymentIntent + redirectToCheckout() billing_checkouts/create → returns url
Typical use case One-off payments Subscriptions / recurring billing / one-off invoices / card-only setup
Auto-created resources None Customer, Payment Source, Subscription

Checkout Modes: SUBSCRIPTION · PAYMENT (one-off) · SETUP (card-saving only, requires x-api-version >= 2025-08-29)

2. Trigger

  • Mentions "subscription", "recurring billing", "subscription integration"
  • Mentions billing_checkouts, "hosted billing checkout", "billing checkout"
  • Asks about Product/Price creation, pricing models, free trial, Coupon/discount
  • Asks about subscription.active, subscription.cancelled, or other Billing Webhooks

3. Core Principles

  • Language: Detect the user's language. Code, API fields, and enum values stay in English; explanations and comments localized.

  • Interaction first: When intent is unclear, ask questions per §4 before outputting content; never dump all sections at once

  • Output strategy: Only output sections relevant to the user's needs; use "conclusion → steps" structure

  • Security: Use <PLACEHOLDER> for sensitive values in code examples

  • Environments: Demo = api-demo.airwallex.com, Production = api.airwallex.com

  • API versioning: Minimum x-api-version per capability and the current latest are in api-reference.md §2. Set AIRWALLEX_X_API_VERSION in .env (template api-reference.md §1.1); examples below read that value and do not hardcode a date, so nobody assumes one fixed version is mandatory. If you rely on the account default and omit the header, confirm the default meets the §2 minimums for what you use.

Read the full file on GitHub · 373 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. 13d ago First seen · 373 lines · 130 tokens per session scan B e4bcced72b37

Subscribe to this mod's changes

airwallex-billing-checkout is a skill published in the GitHub repository airwallex/airwallex-marketplace (5 stars, last pushed yesterday), licensed Apache-2.0. It adds 130 tokens to every session and 5,040 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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