B2B Invoice Conversion API

{
        "email": "client@company.com",
        "password": "SecurePassword123"
      }

{
        "success": true,
        "message": "Login successful",
        "data": {
          "token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..."
        }
      }

const crypto = require('crypto');
        const axios  = require('axios');

        // token from login - used for Authorization and SHA-256 signing
        const token = 'eyJhbGciOiJIUz...';

        const payload = {
          sourceFormat: 'XML_SDI',
          targetFormat: 'FACTUREX',
          fileName:     'IT12345678901_00001.xml',
          data:         '<base64-encoded-xml>',
        };

        // 1 – Serialise (must match transmitted bytes exactly)
        const bodyStr = JSON.stringify(payload);

        // 2 - Compute SHA-256 over token + raw JSON body
        const sig = crypto
          .createHash('sha256')
          .update(token + bodyStr)
          .digest('hex')
          .toLowerCase();

        // 3 – Send
        const res = await axios.post(
          'https://api.xml-babel-converter.com/api/v1/converter/convert/invoice',
          bodyStr,
          {
            headers: {
              'Content-Type':  'application/json',
              'Authorization': `Bearer ${token}`,
              'X-SHA256': sig,
            },
          }
        );

{
        "success": true,
        "message": "File Converted Successfully",
        "data": {
          "resultData": {
            "FACTUREX":  "JVBERi0xLjcKJYGBgY...",  // Base64 PDF
            "PEPPOLBIS": "PD94bWwgdmVyc2lvbj...",  // Base64 XML
            "PDF":       "JVBERi0xLjQKJ..."         // Base64 PDF
          }
        }
      }

const { FACTUREX, PEPPOLBIS, PDF } = response.data.data.resultData;

        // Save Factur-X hybrid PDF
        fs.writeFileSync('invoice_facturex.pdf', Buffer.from(FACTUREX, 'base64'));

        // Save UBL XML
        fs.writeFileSync('invoice_ubl.xml', Buffer.from(PEPPOLBIS, 'base64').toString('utf8'));

        // Save plain PDF
        fs.writeFileSync('invoice_plain.pdf', Buffer.from(PDF, 'base64'));

{
        "sourceFormat": "XML_SDI",
        "targetFormat": "PEPPOLBIS",
        "fileName": "IT12345678901_00001.xml",
        "data": "PD94bWwgdmVyc2lvbj0iMS4wIi...",
        "customParams": {
          "buyerReference": "ORD-2026-0099",
          "paymentMeansCode": "30",
          "note": ["Automatic conversion via B2B API"]
        }
      }

const fs     = require('fs');
        const crypto = require('crypto');
        const axios  = require('axios');

        const BASE = 'https://api.xml-babel-converter.com/api/v1/converter';

        async function convertInvoice() {
          // 1. Login
          const { data: loginRes } = await axios.post(`${BASE}/login`, {
            email:    'client@company.com',
            password: 'SecurePass123',
          });
          // Use token for Authorization and SHA-256 signing
          const { token } = loginRes.data;

          // 2. Load and Base64-encode the source file
          const fileB64 = fs.readFileSync('IT12345678901_00001.xml').toString('base64');

          // 3. Build payload
          const payload = {
            sourceFormat: 'XML_SDI',
            targetFormat: 'FACTUREX,PEPPOLBIS,PDF',
            fileName:     'IT12345678901_00001.xml',
            data:          fileB64,
            customParams: { buyerReference: 'ORD-2026-0099' },
          };

          // 4. Serialize and sign using SHA-256(token + bodyStr)
          const bodyStr = JSON.stringify(payload);
          const sig = crypto
            .createHash('sha256')
            .update(token + bodyStr)
            .digest('hex')
            .toLowerCase();

          // 5. Send
          const { data: convRes } = await axios.post(
            `${BASE}/convert/invoice`,
            bodyStr,
            {
              headers: {
                'Content-Type':  'application/json',
                'Authorization': `Bearer ${token}`,
                'X-SHA256': sig,
              },
            }
          );

          // 6. Decode and save outputs
          const { FACTUREX, PEPPOLBIS, PDF } = convRes.data.resultData;
          fs.writeFileSync('invoice_facturex.pdf', Buffer.from(FACTUREX,  'base64'));
          fs.writeFileSync('invoice_ubl.xml',      Buffer.from(PEPPOLBIS, 'base64').toString('utf8'));
          fs.writeFileSync('invoice_plain.pdf',    Buffer.from(PDF,       'base64'));
          console.log('Conversion complete.');
        }

        convertInvoice().catch(console.error);

# Step 1: Login — obtain token
        curl -s -X POST https://api.xml-babel-converter.com/api/v1/converter/login \
          -H "Content-Type: application/json" \
          -d '{"email":"client@company.com","password":"SecurePass123"}' \
          | jq .data.token

        # Step 2: Convert
        # COMPUTED_SHA256 = sha256(TOKEN + exact JSON body below)
        curl -X POST https://api.xml-babel-converter.com/api/v1/converter/convert/invoice \
          -H "Content-Type: application/json" \
          -H "Authorization: Bearer TOKEN" \
          -H "X-SHA256: COMPUTED_SHA256" \
          -d '{
            "sourceFormat": "XML_SDI",
            "targetFormat": "PEPPOLBIS",
            "fileName":     "invoice.xml",
            "data":         "BASE64_XML"
          }'