Borrowing it
Nothing to install: this file belongs to theYahia/cbr-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/theYahia/cbr-mcp/main/.claude/skills/currency-check/SKILL.mdgit clone --depth 1 https://github.com/theYahia/cbr-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/theyahia/cbr-mcp/currency-check)<a href="https://agentmods.dev/skills/theyahia/cbr-mcp/currency-check"><img src="https://agentmods.dev/badge/skills/theyahia/cbr-mcp/currency-check/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/theyahia/cbr-mcp/currency-check"><img src="https://agentmods.dev/badge/skills/theyahia/cbr-mcp/currency-check.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 | $0.00029 | $0.00300 |
| Opus 5 | $0.00015 | $0.00150 |
| Sonnet 5 | $0.00006 | $0.00060 |
| Haiku 4.5 | $0.00003 | $0.00030 |
Grade A, and why
currency-check 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 12d 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.
What it actually says
/currency-check — Проверка курса валюты
Показывает текущий курс валюты ЦБ РФ с изменением за день.
Используемые инструменты
| Инструмент | Что делает |
|---|---|
get_currency_rate |
Курс конкретной валюты с изменением |
get_daily_rates |
Все курсы для сравнения |
Алгоритм
- Получи код валюты от пользователя (USD, EUR, CNY и т.д.)
- Вызови
get_currency_rateс этим кодом - Покажи курс, изменение за день, процент изменения
- Если пользователь спросил несколько валют — вызови для каждой
Формат ответа
## Курс USD/RUB (ЦБ РФ)
**Курс**: 92.5714 ₽ за 1 USD
**Изменение**: +0.3214 (+0.35%)
**Дата**: 2026-03-30
Примеры
/currency-check USD
/currency-check EUR
/currency-check CNY
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.
- 12d ago First seen · 45 lines · 29 tokens per session scan A 95376a68159a
currency-check is a skill published in the GitHub repository theYahia/cbr-mcp (1 stars, last pushed 6d ago), licensed MIT. It adds 29 tokens to every session and 300 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 2026-08-31.
Other skills, from other repositories
prediction-markets
Use when the user asks about event probabilities, prediction market odds, what people are betting on, Polymarket/Kalshi prices, sports markets — or about the things you CANNOT get from a public API: historical price/volume/orderbook time series, smart-money positioning, whale leaderboards, wallet P&L, wallet identity…
crypto-data
Use for any crypto data question — token/coin prices, FX, commodities, stocks, OHLC history, DEX pairs and liquidity, DeFi TVL, yield/APY pools, or raw JSON-RPC against a chain; also when the user asks for on-chain SQL, wallet labels/net worth, social mindshare or crypto news, so they are told plainly what BlockRun…
polymarket-trading
Use when the user wants to actually PLACE, manage, or redeem bets on Polymarket (not just read odds — that's blockrunmarkets). Covers setup (deposit wallet, funding, approvals), buy/sell with confirm gating, positions, redeeming winnings, geoblock handling, and the end-to-end demo flow.
signal-to-trade-demo
Prepare or run a polished BlockRun trading demo that discovers a current Polymarket market, combines live price, probability history, smart-money, and liquidity evidence into a balanced signal, produces a real order dry-run, and verifies orders or positions. Use for live demos, signal-to-trade workflows, current…
surf
Surf (asksurf.ai) is RETIRED on BlockRun and the blockrunsurf tool was REMOVED in 0.49.0 — the gateway has answered every /v1/surf/ path with HTTP 410 endpointretired since 2026-09-06. Use this skill to route a former Surf question (on-chain SQL, wallet labels and net worth, CEX order books, social mindshare, news) to…
polymarket-tennis
Build observe-only Polymarket and Kalshi tennis market tooling on the polymarket-tennis Python package (MIT) plus the Live Tennis API free tier. Use when asked for a Polymarket tennis bot or market watcher, a Kalshi tennis trading bot, tennis prediction-market data, Gamma API tennis markets, matching a market to a…