Token Price API
Real-time crypto prices via CoinGecko -- price, 24h change, market cap, volume. 10,000+ tokens supported. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.
Quickstart -- MCP
Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):
{
"mcpServers": {
"token-price": {
"url": "https://token-price.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl -X POST "https://token-price.api.klymax402.com/api/price" \
-H "Content-Type: application/json" \
-d '{"token":"..."}'
# -> 402 Payment Required, with an x402 payment challenge in the response body
Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.
Tools
| Tool | Method | Path | Price | Description |
|---|---|---|---|---|
finance_get_token_price | POST | /api/price | $0.003 | Get real-time crypto token price with 24h change, market cap, and volume |
finance_get_token_price
Use this when you need the current price of any cryptocurrency or token. Returns real-time market data in JSON.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
token | string | yes | Token name or CoinGecko ID (e.g. bitcoin, ethereum, solana) |
currency | string | no | Target currency for price (default: usd). Supports usd, eur, gbp, etc. |
Returns
price-- current price in the requested currencychange24h-- 24-hour price change percentagemarketCap-- total market capitalization in USDvolume24h-- 24-hour trading volume in USDtoken-- token identifier usedcurrency-- target currency for the price
Example response:
{"price":3128.60,"change24h":2.45,"marketCap":376000000000,"volume24h":15200000000,"token":"ethereum","currency":"usd"}
When to use: quick price lookups, portfolio valuation, and market monitoring. Supports 10,000+ tokens by CoinGecko ID (e.g. bitcoin, ethereum, solana, dogecoin).
Not for: stock prices (use finance_get_stock_price), token safety (use token_check_safety), historical candles (use token_get_ohlcv_history), currency conversion (use finance_convert_currency).
Example agent prompts
- "The current price of any cryptocurrency or token"
Payment
- Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
- Network: Base L2 (
eip155:8453) - Asset: USDC
- Facilitator: Coinbase CDP (primary), PayAI (fallback)
- Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)
Part of klymax402
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats
License
MIT