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 Belolipetsky/YooKassa-MCP --skill implementationgit clone --depth 1 https://github.com/Belolipetsky/YooKassa-MCPWrote 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/belolipetsky/yookassa-mcp/implementation)<a href="https://agentmods.dev/skills/belolipetsky/yookassa-mcp/implementation"><img src="https://agentmods.dev/badge/skills/belolipetsky/yookassa-mcp/implementation.svg" alt="Measured on agentmods" 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 | $0.00081 | $0.00769 |
| Opus 5 | $0.00041 | $0.00385 |
| Sonnet 5 | $0.00016 | $0.00154 |
| Haiku 4.5 | $0.00008 | $0.00077 |
Grade A, and why
implementation 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 6d 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.
How it starts
The opening of the file, as written. The whole thing — 51 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Реализация интеграции ЮKassa
Обязательный порядок
- Прочитай правила репозитория и выясни язык, фреймворк, package manager, тестовый стек, ORM и текущую платежную архитектуру.
- Найди существующие модели заказа/платежа, HTTP-клиент, secret management, webhook routes и фоновые задачи. Не создавай параллельный слой без причины.
- Получи актуальные операции через
yookassa_api_searchиyookassa_api_details; открой официальные документы изyookassa_search_documentation. - Сначала напиши тест на требуемое поведение и проверь, что он падает по ожидаемой причине.
- Реализуй минимальный вертикальный сценарий в стиле проекта.
- Перед сетевым тестом проверь будущий POST через
yookassa_validate_request. MCP не должен выполнять этот POST: его выполняет код приложения с тестовыми реквизитами. - Запусти unit/contract тесты. Живую диагностику начинай с
yookassa_diagnose_connectionи продолжай только послеtestMode: confirmed. - Покажи измененные файлы, проверки и оставшиеся допущения.
Инварианты реализации
- API вызывается только с доверенного сервера по HTTPS.
YOOKASSA_SECRET_KEYприходит из secret storage/environment и никогда не логируется.- Каждый POST получает стабильный
Idempotence-Keyдо первого запроса; ключ и результат сохраняются атомарно с бизнес-операцией. - Timeout и retry ограничены. Повтор POST для одной операции не создает новый ключ.
- Суммы хранятся в минимальных денежных единицах или точном decimal-типе; float запрещен.
- Внутренний заказ хранит
payment_id,refund_id, статусы и историю переходов. - Redirect пользователя не считается доказательством оплаты.
- Webhook может повторяться и приходить не по порядку. Обработчик повторно получает объект через API и применяет только допустимый идемпотентный переход.
- Пользовательские metadata не должны содержать секреты и лишние персональные данные.
- Валидация запроса и бизнес-правила выполняются до API-вызова.
Чеки
Если сценарий затрагивает фискализацию, дополнительно примени skill receipts-54fz. Не выбирай vat_code, payment_subject, payment_mode, систему налогообложения или требования маркировки без подтвержденных данных.
What ships with it
2 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.
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.
- 6d ago First seen · 51 lines · 81 tokens per session scan A 5d290e73f474
implementation is a skill published in the GitHub repository Belolipetsky/YooKassa-MCP (0 stars, last pushed 1mo ago), licensed MIT. It adds 81 tokens to every session and 769 once invoked, about $0.0004 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 2026-09-01.
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