recurrent-payment

recurrent-payment is a skill for Claude Code from theYahia/WWmcp. It costs 26 tokens per session (697 once invoked), scanned A, original, MIT.

A recurring-payment workflow for T-Kassa, a payment service. It links a customer's card during an initial payment and later charges that saved payment authorisation for a subscription.

In plain words
What is it for?
Use it to register a customer, start a card-linking payment, save the returned recurring-payment identifier, make later subscription charges, manage saved cards, and issue closing receipts.
Why use it?
It removes the need for the customer to enter payment details for every subscription charge. It also verifies payment status and sends a receipt after the service is provided.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Good fit Use it to register a customer, start a card-linking payment, save the returned recurring-payment identifier, make later subscription charges, manage saved cards, and issue closing receipts.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/theyahia/wwmcp/recurrent-payment
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 theYahia/WWmcp --skill recurrent-payment
Clone the repo
git clone --depth 1 https://github.com/theYahia/WWmcp

Made for: Claude Code.

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 recurrent-payment

README.md
[![agentmods](https://agentmods.dev/badge/skills/theyahia/wwmcp/recurrent-payment/github.svg)](https://agentmods.dev/skills/theyahia/wwmcp/recurrent-payment)
Your own site
<a href="https://agentmods.dev/skills/theyahia/wwmcp/recurrent-payment"><img src="https://agentmods.dev/badge/skills/theyahia/wwmcp/recurrent-payment/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 recurrent-payment

Your own site · 80×15
<a href="https://agentmods.dev/skills/theyahia/wwmcp/recurrent-payment"><img src="https://agentmods.dev/badge/skills/theyahia/wwmcp/recurrent-payment.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 697 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00026 $0.00697
Opus 5 $0.00013 $0.00349
Sonnet 5 $0.00005 $0.00139
Haiku 4.5 $0.00003 $0.00070

Measured 4d ago against content hash 1bb7d8843834, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

recurrent-payment 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 4d 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.

servers/tkassa/.claude/skills/recurrent-payment/SKILL.md · 55 lines

How it starts

The opening of the file, as written. The whole thing — 55 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/recurrent-payment — Автоплатежи и карты

Алгоритм — первичная привязка карты

  1. add_customer (customer_key — ваш уникальный ID покупателя, email, phone) — зарегистрируй покупателя.
  2. init_payment (amount в рублях, order_id, description, customer_key, recurrent: "Y", success_url, fail_url, notification_url) — первый платёж обязан идти с признаком recurrent, иначе карта не привяжется и автосписаний не будет.
  3. Отдай покупателю PaymentURL из ответа, дождись оплаты, проверь get_payment_state (payment_id).
  4. RebillId приходит в уведомлении на notification_url. Это ключ карты для последующих списаний — сохрани его на своей стороне.

Алгоритм — списание по подписке

  1. get_card_list (customer_key) — привязанные карты покупателя, маскированные номера и CardId.
  2. charge_payment (payment_id — исходный платёж с recurrent, rebill_id — карта, amount) — автосписание. Форма оплаты покупателю не показывается.
  3. get_payment_state (payment_id) — подтверди успех, не считай платёж прошедшим по факту вызова.
  4. Чек по факту оказания услуги — send_closing_receipt (payment_id, email, phone, taxation, items).

Отвязка и удаление

  • remove_card (customer_key, card_id) — снять одну карту, CardId берётся из get_card_list.
  • remove_customer (customer_key) — удалить покупателя вместе со всеми его картами. Действие необратимое, подтверждай отдельно.
  • Проверить, заведён ли покупатель, — get_customer (customer_key).

Важно

  • Списание без согласия держателя карты — прямой путь к чарджбэку. Автосписание запускать только по правилу, которое пользователь подтвердил (сумма, периодичность, за что).
  • Забыли recurrent: "Y" в первом платеже — RebillId не появится; лечится только новым первичным платежом, задним числом карту не привязать.
  • customer_key — ваш идентификатор, а не выданный банком; он же связывает карты с покупателем.

Формат ответа

## Автоплатёж T-Kassa

**Покупатель**: cust-1042 ([email protected])
**Карты**: 430000******0777 (CardId 55120)
**Списание**: 1 490 ₽ по RebillId 9912834
**Статус**: CONFIRMED

Чек отправлен на [email protected].

Read the full file on GitHub · 55 lines

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. 4d ago First seen · 55 lines · 26 tokens per session scan A 1bb7d8843834

Subscribe to this mod's changes

recurrent-payment is a skill published in the GitHub repository theYahia/WWmcp (29 stars, last pushed 2d ago), licensed MIT. It adds 26 tokens to every session and 697 once invoked, about $0.0001 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 2026-09-06.

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