@bujaayjaay/mcp-coincap-jj/dist/services/coincap.js

A Model Context Protocol (MCP) server that provides real-time cryptocurrency data and analysis through CoinCap's API v3. Features include price tracking, market analysis, and historical trends. This is a fork of the original repo by truss44, with updates

import { COINCAP_API_BASE, CACHE_TTL } from '../config/index.js';
const cache = new Map();
// Expose cache clear function for testing
export function clearCache() {
    cache.clear();
}
function getCachedData(key) {
    const entry = cache.get(key);
    if (!entry)
        return null;
    const now = Date.now();
    if (now - entry.timestamp > CACHE_TTL) {
        cache.delete(key);
        return null;
    }
    return entry.data;
}
function setCacheData(key, data) {
    cache.set(key, {
        data,
        timestamp: Date.now()
    });
}
async function makeCoinCapRequest(endpoint) {
    // Check cache first
    const cachedData = getCachedData(endpoint);
    if (cachedData) {
        return cachedData;
    }
    const headers = {};
    const apiKey = process.env.COINCAP_API_KEY;
    if (apiKey) {
        headers['Authorization'] = `Bearer ${apiKey}`;
    }
    try {
        const response = await fetch(`${COINCAP_API_BASE}${endpoint}`, {
            headers
        });
        if (!response.ok) {
            throw new Error(`HTTP error! status: ${response.status}`);
        }
        const data = await response.json();
        // Cache the successful response
        setCacheData(endpoint, data);
        return data;
    }
    catch (error) {
        console.error("Error making CoinCap request:", error);
        return null;
    }
}
export async function getAssets() {
    return makeCoinCapRequest('/assets');
}
export async function getMarkets(assetId) {
    return makeCoinCapRequest(`/assets/${assetId}/markets`);
}
export async function getHistoricalData(assetId, interval, start, end) {
    return makeCoinCapRequest(`/assets/${assetId}/history?interval=${interval}&start=${start}&end=${end}`);
}