tesouro-direto-mcp/dist/api/tesouroDireto.js

Model Context Protocol (MCP) server for Tesouro Direto API integration

import https from 'https';
import { logger } from '../utils/logger.js';
// Define API URL as a constant
const API_URL = 'https://www.tesourodireto.com.br/json/br/com/b3/tesourodireto/service/api/treasurybondsinfo.json';
/**
 * Fetches data from the Tesouro Direto API
 */
export async function fetchTesouroDiretoAPI() {
    try {
        return new Promise((resolve, reject) => {
            const req = https.get(API_URL, {
                rejectUnauthorized: false,
            }, (res) => {
                let data = '';
                res.on('data', (chunk) => {
                    data += chunk;
                });
                res.on('end', () => {
                    try {
                        const parsedData = JSON.parse(data);
                        if (parsedData.responseStatus !== 200) {
                            throw new Error(`API returned error status: ${parsedData.responseStatusText}`);
                        }
                        logger.info('Successfully fetched data from Tesouro Direto API');
                        resolve(parsedData.response);
                    }
                    catch (error) {
                        reject(error);
                    }
                });
            });
            req.on('error', (error) => {
                reject(error);
            });
            req.end();
        });
    }
    catch (error) {
        logger.error('Error fetching from Tesouro Direto API:', error);
        throw new Error('Failed to fetch data from Tesouro Direto API');
    }
}
/**
 * Fetches a specific treasury bond by its code
 */
export async function fetchBondByCode(code) {
    const data = await fetchTesouroDiretoAPI();
    return data.TrsrBdTradgList.find(item => item.TrsrBd.cd === code);
}
/**
 * Searches bonds by criteria
 */
export async function searchBonds(criteria) {
    const data = await fetchTesouroDiretoAPI();
    return data.TrsrBdTradgList.filter(item => {
        let match = true;
        if (criteria.bondType && !item.TrsrBdType.nm.includes(criteria.bondType)) {
            match = false;
        }
        if (criteria.maturityAfter) {
            const maturityDate = new Date(item.TrsrBd.mtrtyDt);
            const afterDate = new Date(criteria.maturityAfter);
            if (maturityDate < afterDate)
                match = false;
        }
        if (criteria.maturityBefore) {
            const maturityDate = new Date(item.TrsrBd.mtrtyDt);
            const beforeDate = new Date(criteria.maturityBefore);
            if (maturityDate > beforeDate)
                match = false;
        }
        return match;
    });
}