CoinMarketCap Universal MCP Server

import { API_ENDPOINTS, CACHE_TTL, DEFAULT_PARAMS } from '../config/constants'; import { FearGreedResponse } from '../types/api'; import { FearGreedParams } from '../types/tools'; import { BaseApiService } from './base'; /** * Service for accessing Fear & Greed Index data from CoinMarketCap */ export class FearGreedService extends BaseApiService { /** * Gets historical Fear & Greed Index data * @param params Query parameters * @returns Fear & Greed Index data */ async getFearGreedIndex(params: FearGreedParams = {}): Promise<FearGreedResponse> { // Validate parameters this.validateFearGreedParams(params); const actualParams = { limit: params.limit || DEFAULT_PARAMS.LIMIT, start: params.start || 1 }; return this.get<FearGreedResponse>( API_ENDPOINTS.FEAR_GREED, actualParams, CACHE_TTL.MEDIUM ); } /** * Validates Fear & Greed parameters * @param params Parameters to validate */ private validateFearGreedParams(params: FearGreedParams): void { if (params.limit !== undefined) { if (!Number.isInteger(params.limit) || params.limit < 1 || params.limit > 100) { throw new Error('Limit must be an integer between 1 and 100'); } } if (params.start !== undefined) { if (!Number.isInteger(params.start) || params.start < 1) { throw new Error('Start must be a positive integer'); } } } }