Bolt.new AI and Payoneer integration: Step-by-Step Guide 2025

To integrate Bolt.new with Payoneer, you don’t “connect Bolt to Payoneer” directly. Instead, you build a normal full‑stack app inside Bolt.new (Node.js backend, frontend, environment variables, HTTP clients) and that app talks to Payoneer’s real external API over HTTPS. Bolt.new is just the workspace where you write, run, test, and scaffold the integration — Payoneer is the external payment system. The connection is done through REST API calls with OAuth 2.0 Client Credentials, because that is the only real, supported Payoneer server-to-server integration method.

So the actual integration flow is:
Your backend inside Bolt.new → Payoneer OAuth token endpoint → Payoneer API endpoints.

 

How Payoneer API authentication really works

 

Payoneer provides a REST API. To call any endpoint, your server must first obtain an OAuth 2.0 access token using the Client Credentials flow. You do this by sending your client_id and client_secret to Payoneer’s token endpoint; they return a short‑lived access token. You attach that token in the Authorization: Bearer <token> header in every API call.

• client\_id → issued by Payoneer
• client\_secret → keep in Bolt.new environment variables
• OAuth2 token endpoint → where your backend exchanges credentials for a token

You get these credentials from Payoneer after your business account is approved for API access; they’re not auto‑generated.

 

What you do inside Bolt.new

 

In Bolt.new you create a Node.js backend (Express or Fastify), add environment variables, and write fetch/axios calls to Payoneer. This is a standard server-to-server REST integration.

Inside the Bolt.new environment panel, you set:

• PAYONEER_CLIENT_ID=xxxx
• PAYONEER_CLIENT_SECRET=xxxx
• PAYONEER_BASE_URL=https://api.payoneer.com/v4

 

Minimal working Node.js example you can run inside Bolt.new

 

// backend/payoneer.js
// Minimal Payoneer integration (Node + fetch)

import fetch from "node-fetch";

// helper to get a valid token
export async function getPayoneerToken() {
  const url = `${process.env.PAYONEER_BASE_URL}/oauth2/token`;

  const body = new URLSearchParams();
  body.append("grant_type", "client_credentials");
  body.append("client_id", process.env.PAYONEER_CLIENT_ID);
  body.append("client_secret", process.env.PAYONEER_CLIENT_SECRET);

  const res = await fetch(url, {
    method: "POST",
    headers: { "Content-Type": "application/x-www-form-urlencoded" },
    body
  });

  if (!res.ok) {
    const err = await res.text();
    throw new Error("Failed getting Payoneer token: " + err);
  }

  const data = await res.json();
  return data.access_token; // you attach this to future calls
}

// example: get account balance
export async function getBalance() {
  const token = await getPayoneerToken();

  const res = await fetch(`${process.env.PAYONEER_BASE_URL}/programs/accounts/balance`, {
    method: "GET",
    headers: {
      Authorization: `Bearer ${token}`
    }
  });

  if (!res.ok) {
    const err = await res.text();
    throw new Error("Failed getting balance: " + err);
  }

  return await res.json();
}

 

How to expose it in your Bolt.new backend

 

// backend/index.js
// Simple Express server inside Bolt.new

import express from "express";
import { getBalance } from "./payoneer.js";

const app = express();

app.get("/api/payoneer/balance", async (req, res) => {
  try {
    const data = await getBalance();
    res.json(data);
  } catch (err) {
    res.status(500).json({ error: err.message });
  }
});

app.listen(3000, () => {
  console.log("Server running on port 3000");
});

 

Frontend usage inside Bolt.new

 

// frontend/example.js
// Fetches your backend endpoint, not Payoneer directly

async function loadBalance() {
  const res = await fetch("/api/payoneer/balance");
  const data = await res.json();
  console.log("Payoneer balance:", data);
}

loadBalance();

 

Important constraints junior devs usually miss

 

• You cannot call Payoneer directly from the frontend. Their API requires secrets and OAuth2, so calls MUST go through a backend.
• Bolt.new does not “automatically” integrate. You write normal Node.js code + environment variables.
• Payoneer access must be enabled for your business account. Not every Payoneer user gets API access by default.
• Sandbox vs Production: Payoneer has a sandbox environment; usually you start there before switching to production.

 

What “integration” really means in practice

 

You use Bolt.new as a fast coding/testing sandbox. Inside it, you write:

• A backend route that obtains an OAuth token
• Functions that call Payoneer REST endpoints
• A frontend that talks only to your backend
• Environment variables to store credentials safely

When ready for production, you move the same Node.js code to your actual hosting (e.g., Vercel, AWS, Render) and keep the same pattern: backend → OAuth2 → Payoneer API.