cmc100IndexLatest
Obtain the current CoinMarketCap 100 Index value, constituents, and their weights.
Instructions
Returns the lastest CoinMarketCap 100 Index value, constituents, and constituent weights.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
Implementation Reference
- index.js:519-529 (registration)The tool 'cmc100IndexLatest' is registered via server.tool() with the description 'Returns the lastest CoinMarketCap 100 Index value, constituents, and constituent weights.' and an empty schema object (no parameters).
// /index/quotes/latest server.tool("cmc100IndexLatest", "Returns the lastest CoinMarketCap 100 Index value, constituents, and constituent weights.", {}, async () => { return handleEndpoint(async () => { const data = await makeApiRequest(apiKey, '/v3/index/cmc100-latest') return formatResponse(data) }) } ) - index.js:523-528 (handler)The handler function calls handleEndpoint which wraps an API request to '/v3/index/cmc100-latest' via makeApiRequest, then formats the response with formatResponse.
async () => { return handleEndpoint(async () => { const data = await makeApiRequest(apiKey, '/v3/index/cmc100-latest') return formatResponse(data) }) } - index.js:82-88 (helper)handleEndpoint is a wrapper that executes the provided async API call and returns the result, catching errors and returning a formatted error response.
async function handleEndpoint(apiCall) { try { return await apiCall() } catch (error) { return formatErrorResponse(error.message, error.status || 403) } } - index.js:50-73 (helper)makeApiRequest is the helper that sends GET requests to the CoinMarketCap API using the provided endpoint and parameters, using the API key for authentication.
async function makeApiRequest(apiKey, endpoint, params = {}) { const queryParams = new URLSearchParams() Object.entries(params).forEach(([key, value]) => { if (value !== undefined) { queryParams.append(key, value.toString()) } }) const url = `https://pro-api.coinmarketcap.com${endpoint}${queryParams.toString() ? `?${queryParams.toString()}` : ''}` const response = await fetch(url, { method: 'GET', headers: { 'Accept': 'application/json', 'X-CMC_PRO_API_KEY': apiKey, } }) if (!response.ok) { throw new Error(`Error fetching data from CoinMarketCap: ${response.statusText}`) } return await response.json() } - index.js:30-37 (helper)formatResponse wraps the API data into the standard MCP text content format.
function formatResponse(data) { return { content: [{ type: "text", text: JSON.stringify(data) }] } }