crypto_daily
Retrieve daily time series data for cryptocurrencies by specifying the symbol, market, and data format. Integrates with MCP Avantage for accurate and comprehensive financial insights.
Instructions
Fetches daily time series data for a cryptocurrency.
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| datatype | No | Data format for the response. | json |
| market | Yes | The exchange market (e.g., "USD", "EUR"). | |
| symbol | Yes | The cryptocurrency symbol (e.g., "BTC"). |
Input Schema (JSON Schema)
{
"additionalProperties": false,
"description": "Parameters for fetching daily/weekly/monthly crypto time series data.",
"properties": {
"datatype": {
"default": "json",
"description": "Data format for the response.",
"enum": [
"json",
"csv"
],
"type": "string"
},
"market": {
"description": "The exchange market (e.g., \"USD\", \"EUR\").",
"type": "string"
},
"symbol": {
"description": "The cryptocurrency symbol (e.g., \"BTC\").",
"type": "string"
}
},
"required": [
"symbol",
"market"
],
"type": "object"
}
Implementation Reference
- src/index.ts:511-522 (registration)Registration of the 'crypto_daily' MCP tool, including its name, description, input schema reference, and thin handler that invokes the shared executeAvantageTool helper with the specific Alpha Vantage crypto.daily method.server.addTool({ name: "crypto_daily", description: "Fetches daily time series data for a cryptocurrency.", parameters: schemas.CryptoTimeSeriesParamsSchema, execute: ( args, context // Let type be inferred ) => executeAvantageTool("crypto_daily", args, context, (av, params) => av.crypto.daily(params) ), });
- src/index.ts:511-522 (handler)The execute function handler for 'crypto_daily', which receives args and context, then calls executeAvantageTool to perform the actual API interaction via av.crypto.daily(params).server.addTool({ name: "crypto_daily", description: "Fetches daily time series data for a cryptocurrency.", parameters: schemas.CryptoTimeSeriesParamsSchema, execute: ( args, context // Let type be inferred ) => executeAvantageTool("crypto_daily", args, context, (av, params) => av.crypto.daily(params) ), });
- src/schemas.ts:112-117 (schema)Zod schema defining input parameters for the crypto_daily tool: required symbol (e.g. BTC) and market (e.g. USD), optional datatype.export const CryptoTimeSeriesParamsSchema = z.object({ symbol: z.string().describe('The cryptocurrency symbol (e.g., "BTC").'), market: z.string().describe('The exchange market (e.g., "USD", "EUR").'), datatype: DatatypeSchema.default('json').optional(), }).describe('Parameters for fetching daily/weekly/monthly crypto time series data.')
- src/index.ts:38-115 (helper)Shared helper function used by all tools, including crypto_daily, that resolves API key, manages AVantage client lifecycle via resourceManager, executes the provided library method, handles errors, and returns JSON stringified data.async function executeAvantageTool<TArgs, TResult>( toolName: string, args: TArgs, context: Context<Record<string, unknown> | undefined>, // Use the imported Context type directly avantageMethod: ( av: AVantage, args: TArgs ) => Promise<{ error?: boolean; reason?: string; data?: TResult }> ): Promise<string> { logger.info(`Executing '${toolName}' tool for request ID: ${context}`); logger.debug(`Args for ${toolName}: ${JSON.stringify(args)}`); // --- Authentication & Resource Management --- // Access extraArgs safely - it might be null or undefined const extraArgsApiKey = context.extraArgs?.apiKey as string | undefined; const apiKey = extraArgsApiKey || config.apiKey; if (!apiKey) { logger.error(`'${toolName}' failed: Alpha Vantage API key missing.`); throw new UserError(apiKeyErrorMessage); } logger.debug( `Using AV API key (source: ${extraArgsApiKey ? "extraArgs" : "environment"}) for ${toolName}` ); try { // Get or create AVantage instance managed by ResourceManager const av = await resourceManager.getResource<AVantage>( apiKey, // Cache key is the resolved API key "avantage_client", // Type identifier for logging async (key) => { // Factory Function logger.info( `Creating new AVantage instance for key ending ...${key.slice(-4)}` ); // AVantage library reads AV_PREMIUM from process.env internally return new AVantage(key); }, async (avInstance) => { // Cleanup Function (no-op needed for AVantage) logger.debug(`Destroying AVantage instance (no-op)`); } ); // --- Library Call --- const result = await avantageMethod(av, args); // --- Response Handling --- if (result.error) { logger.warn( `'${toolName}' failed. Reason from avantage: ${result.reason}` ); throw new UserError(result.reason || `Tool '${toolName}' failed.`); } if (result.data === undefined || result.data === null) { logger.warn(`'${toolName}' completed successfully but returned no data.`); return "null"; // Return string "null" for empty data } logger.info(`'${toolName}' completed successfully.`); // Stringify the data part of the response return JSON.stringify(result.data); } catch (error: any) { logger.error( `Error during execution of '${toolName}': ${error.message}`, error ); // If it's already a UserError, rethrow it if (error instanceof UserError) { throw error; } // Otherwise, wrap it in a UserError throw new UserError( `An unexpected error occurred while executing tool '${toolName}': ${error.message}` ); } }