tesouro-direto-mcp
Version:
Model Context Protocol (MCP) server for Tesouro Direto API integration
83 lines (82 loc) • 3.74 kB
JavaScript
import { z } from 'zod';
import { getApiDataWithCache } from '../cache/apiCache.js';
import { logger } from '../utils/logger.js';
// Zod schema for the tool input
const bondDataSchema = z.object({
code: z.number().int().positive().describe('The numeric code of the bond to retrieve')
});
export const bondDataTool = {
name: "bond_data",
description: "Retrieves detailed data for a specific bond from Tesouro Direto",
inputSchema: {
type: "object",
properties: {
code: {
type: "number",
description: "The numeric code of the bond to retrieve"
}
},
required: ["code"]
}
};
export async function handleBondDataTool(args) {
try {
// Validate the input using zod
const { code } = bondDataSchema.parse(args);
const responseData = await getApiDataWithCache(`bond data tool (code: ${code})`);
// Find the specific bond in the data
const bondItem = responseData.TrsrBdTradgList.find(item => item.TrsrBd.cd === code);
if (!bondItem) {
throw new Error(`Bond with code ${code} not found in the Tesouro Direto database. Please verify the bond code and try again.`);
}
const { TrsrBd, TrsrBdType } = bondItem;
// Format the bond data for the response
return {
content: [{
type: "text",
text: JSON.stringify({
code: TrsrBd.cd,
name: TrsrBd.nm,
features: TrsrBd.featrs,
maturity_date: TrsrBd.mtrtyDt,
minimum_investment_amount: TrsrBd.minInvstmtAmt,
unitary_investment_value: TrsrBd.untrInvstmtVal,
investment_stability: TrsrBd.invstmtStbl,
semiannual_interest_indicator: TrsrBd.semiAnulIntrstInd,
receiving_income: TrsrBd.rcvgIncm,
annual_investment_rate: TrsrBd.anulInvstmtRate,
annual_redemption_rate: TrsrBd.anulRedRate,
minimum_redemption_quantity: TrsrBd.minRedQty,
unitary_redemption_value: TrsrBd.untrRedVal,
minimum_redemption_value: TrsrBd.minRedVal,
isin_code: TrsrBd.isinCd,
financial_index: {
code: TrsrBd.FinIndxs.cd,
name: TrsrBd.FinIndxs.nm
},
withdrawal_date: TrsrBd.wdwlDt,
conversion_date: TrsrBd.convDt,
business_segment: TrsrBd.BusSegmt ? {
code: TrsrBd.BusSegmt.cd,
name: TrsrBd.BusSegmt.nm
} : null,
amortization_quota_quantity: TrsrBd.amortQuotQty,
treasury_bond_type: {
code: TrsrBdType.cd,
name: TrsrBdType.nm,
custody_rate: TrsrBdType.ctdyRate,
gross_price: TrsrBdType.grPr
}
}, null, 2)
}]
};
}
catch (error) {
if (error instanceof z.ZodError) {
logger.error('Invalid input for bond data tool:', error.errors);
throw new Error(`Invalid input for bond data tool: A valid positive numeric bond code is required. ${error.errors.map(e => e.message).join(', ')}`);
}
logger.error('Error in bond data tool:', error);
throw new Error('Failed to retrieve bond data');
}
}