Official Agent Skills for exchangerate.dev — a foreign-exchange rates API for developers. 465 currency pairs across 31 currencies, live intraday repricing (~60 s) on trading days, honest freshness metadata (source, market_session) on every response, historical series back to 1999.
No API key needed to start — the API answers anonymous calls at the free tier's rate limit, and the free tier (10,000 calls/month) needs no credit card.
All skills:
npx skills add nusantara-ventures/exchangerate-skillsOne skill:
npx skills add nusantara-ventures/exchangerate-skills --skill fx-rates-correctnessClaude Code plugin:
/plugin marketplace add nusantara-ventures/exchangerate-skills
/plugin install exchangerate-skills@exchangerate-skills
| Skill | What it teaches |
|---|---|
exchangerate-dev |
The API itself — every endpoint with real requests and responses, auth, rate limits, freshness fields, MCP server setup |
fx-rates-correctness |
The pitfalls that make FX code silently wrong — weekend gaps, forward-fill, timezone-of-record, per-pair precision, derived crosses, stale-rate detection |
portfolio-currency-translation |
Valuing multi-market portfolios in one home currency — close-time conventions, return decomposition, dividend conversion, broker-statement mismatches |
multi-currency-pricing |
Adding localized prices to an app — display vs charge currency, caching, psychological rounding, minor units, honest estimate labeling |
fx-accounting-rates |
Rate-of-record for invoicing and bookkeeping — date conventions, realized/unrealized FX gains, month-end revaluation, audit trails |
fx-dashboard-widgets |
Live rate tickers, tables, and charts — session-aware polling, truthful staleness labels, daily-change math, sparklines over business-day series |
- MCP server —
npx exchangerate-dev-mcp, five tools, works on every plan - OpenAPI spec
- Docs · llms.txt · Pricing
MIT. Rates served by the API are indicative — not for settlement, regulated trading, or use as a source of record.