{
  "markdown": "# Currency Converter API\n\n[![MCP Server](https://img.shields.io/badge/MCP-server-blue)](https://currency-converter.api.klymax402.com/mcp)\n[![x402](https://img.shields.io/badge/payments-x402-6E56CF)](https://x402.org)\n[![License: MIT](https://img.shields.io/badge/license-MIT-green)](LICENSE)\n\nFiat and crypto currency converter -- ECB rates for fiat, CoinGecko for crypto. Instant cross-rate lookup. Pay-per-call via [x402](https://x402.org) (USDC on Base L2) -- no API key, no signup, no rate-limit wall.\n\nPart of the [klymax402](https://klymax402.com) marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.\n\n## Quickstart -- MCP\n\nAdd to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):\n\n```json\n{\n  \"mcpServers\": {\n    \"currency-converter\": {\n      \"url\": \"https://currency-converter.api.klymax402.com/mcp\"\n    }\n  }\n}\n```\n\n## Quickstart -- HTTP (x402)\n\n```bash\ncurl -X POST \"https://currency-converter.api.klymax402.com/api/convert\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"amount\":\"1\",\"from\":\"...\",\"to\":\"...\"}'\n# -> 402 Payment Required, with an x402 payment challenge in the response body\n```\n\nAny x402-aware client ([`@x402/fetch`](https://www.npmjs.com/package/@x402/fetch), [`x402-agent-tools`](https://www.npmjs.com/package/x402-agent-tools), ATXP) handles the 402 -> sign -> retry cycle automatically.\n\n## Tools\n\n| Tool | Method | Path | Price | Description |\n|---|---|---|---|---|\n| `finance_convert_currency` | POST | `/api/convert` | $0.003 | Convert between fiat currencies and cryptocurrencies |\n\n### `finance_convert_currency`\n\nUse this when you need to convert between any currencies -- both fiat (USD, EUR, GBP, JPY) and crypto (BTC, ETH, SOL). Returns conversion result in JSON.\n\n**Parameters**\n\n| Name | Type | Required | Description |\n|---|---|---|---|\n| `amount` | number | yes | Amount to convert |\n| `from` | string | yes | Source currency code (e.g., USD, EUR, BTC, ETH) |\n| `to` | string | yes | Target currency code (e.g., EUR, GBP, USD, BTC) |\n\n**Returns**\n\n- `convertedAmount` -- the resulting amount in target currency\n- `exchangeRate` -- the rate used for conversion\n- `from` -- source currency code\n- `to` -- target currency code\n- `amount` -- original amount provided\n- `rateSource` -- data source used (ECB for fiat, CoinGecko for crypto)\n- `timestamp` -- when the rate was fetched\n\nExample response:\n\n```json\n{\"convertedAmount\":2815.40,\"exchangeRate\":0.9218,\"from\":\"USD\",\"to\":\"EUR\",\"amount\":3054.00,\"rateSource\":\"ECB\",\"timestamp\":\"2026-04-13T12:00:00Z\"}\n```\n\n**When to use**: price conversions across fiat and crypto in a single call. Essential for international pricing, invoice generation, and portfolio valuation in local currency.\n\n**Not for**: market data or charts (use `finance_get_token_price`), DeFi swap quotes (use `dex_get_swap_quote`), wallet balances (use `wallet_get_portfolio`).\n\n## Example agent prompts\n\n- \"Convert between any currencies -- both fiat (USD, EUR, GBP, JPY) and crypto (BTC, ETH, SOL)\"\n\n## Payment\n\n- Protocol: [x402](https://x402.org) -- HTTP-native pay-per-call, no signup, no API key\n- Network: Base L2 (`eip155:8453`)\n- Asset: USDC\n- Facilitator: Coinbase CDP (primary), PayAI (fallback)\n\n## Part of klymax402\n\n100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.\n\n- Catalog: https://klymax402.com/llms.txt\n- Full API reference: https://klymax402.com/llms-full.txt\n- Live stats: https://klymax402.com/stats\n\n## License\n\nMIT\n",
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  "sha": "d5af9b80b7e2355632874951d9c304154d8050bc0fa5c348760b65af51d447f3",
  "repo_slug": "br0ski777/currency-converter-x402",
  "fonte": "repo",
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  "api": "https://agentalog.com/api/listings/mcp_io_github_br0ski777_currency_converter_43bfee1d/readme"
}