diff --git a/qbo_query.js b/qbo_query.js
new file mode 100644
index 0000000..06c3fc3
--- /dev/null
+++ b/qbo_query.js
@@ -0,0 +1,49 @@
+#!/usr/bin/env node
+// qbo_query.js — Quick QBO Query Tool
+//
+// Usage:
+//   node qbo_query.js invoice 110444        # By DocNumber
+//   node qbo_query.js invoice-id 37973      # By QBO ID
+//   node qbo_query.js payment 38733         # By Payment ID
+//   node qbo_query.js query "SELECT * FROM Invoice WHERE Balance = '0' MAXRESULTS 3"
+
+require('dotenv').config();
+const { makeQboApiCall, getOAuthClient } = require('./qbo_helper');
+
+async function main() {
+    const [type, value] = process.argv.slice(2);
+    if (!type || !value) {
+        console.log('Usage:\n  node qbo_query.js invoice <DocNumber>\n  node qbo_query.js invoice-id <QBO_ID>\n  node qbo_query.js payment <Payment_ID>\n  node qbo_query.js query "<QUERY>"');
+        process.exit(1);
+    }
+
+    const oauthClient = getOAuthClient();
+    const companyId = oauthClient.getToken().realmId;
+    const base = process.env.QBO_ENVIRONMENT === 'production'
+        ? 'https://quickbooks.api.intuit.com'
+        : 'https://sandbox-quickbooks.api.intuit.com';
+
+    let url;
+    if (type === 'invoice') {
+        url = `${base}/v3/company/${companyId}/query?query=${encodeURI(`SELECT * FROM Invoice WHERE DocNumber = '${value}'`)}`;
+    } else if (type === 'invoice-id') {
+        url = `${base}/v3/company/${companyId}/invoice/${value}`;
+    } else if (type === 'payment') {
+        url = `${base}/v3/company/${companyId}/payment/${value}`;
+    } else if (type === 'query') {
+        url = `${base}/v3/company/${companyId}/query?query=${encodeURI(value)}`;
+    } else {
+        console.error('Unknown type:', type);
+        process.exit(1);
+    }
+
+    try {
+        const response = await makeQboApiCall({ url, method: 'GET' });
+        const data = response.getJson ? response.getJson() : response.json;
+        console.log(JSON.stringify(data, null, 2));
+    } catch (e) {
+        console.error('Error:', e.message);
+    }
+}
+
+main();
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