get_crypto_price
Retrieve real-time cryptocurrency prices from CoinCap's API to monitor market values and track specific coin performance.
Instructions
Get realtime crypto price on crypto
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| name | No | Name of the crypto coin |
Implementation Reference
- src/tools/GetCryptoPrice.ts:23-48 (handler)The `toolCall` method that executes the core logic: extracts crypto name from arguments, fetches price data from Coincap API endpoint, returns JSON data or error response.
async toolCall(request: z.infer<typeof CallToolRequestSchema>) { try { const cryptoName = request.params.arguments?.name; if (!cryptoName) { throw new Error("Missing crypto name"); } const url = CONSTANTS.CRYPTO_PRICE_URL + cryptoName; const response = await fetch(url); if (!response.ok) { throw new Error("Error fetching coincap data"); } const body = await response.json(); return { content: [{ type: "text", text: JSON.stringify(body.data) }], }; } catch (error) { return { content: [ { type: "error", text: JSON.stringify((error as any).message) }, ], }; } } - src/tools/GetCryptoPrice.ts:9-21 (schema)Tool definition including name, description, and input schema specifying a required 'name' string for the cryptocurrency.
toolDefinition: Tool = { name: this.name, description: "Get realtime crypto price on crypto", inputSchema: { type: "object", properties: { name: { type: "string", description: "Name of the crypto coin", }, }, }, }; - src/utils/toolLoader.ts:90-92 (registration)Creates a Map of tools keyed by their name (including 'get_crypto_price') for lookup during tool calls.
export function createToolsMap(tools: BaseTool[]): Map<string, BaseTool> { return new Map(tools.map((tool) => [tool.name, tool])); } - src/constants.ts:2-6 (helper)Defines CRYPTO_PRICE_URL constant used by the get_crypto_price handler to construct the API endpoint.
export const CONSTANTS = { CRYPTO_PRICE_URL: "https://api.coincap.io/v2/assets/", PROJECT_NAME: "coincap-mcp", PROJECT_VERSION: "0.9.2", }; - src/tools/GetCryptoPrice.ts:51-51 (registration)Exports the GetCryptoPrice class for dynamic loading and instantiation by the tool loader.
export default GetCryptoPrice;