Overview
Citi's partner API provides access to Citigroup banking account and statement data, enabling developers to build financial apps that read account balances, transactions, and statements on behalf of authorized users. The API uses OAuth for secure user authentication, making it suitable for personal finance and fintech applications. This is a sophisticated API intended for developers building bank-integrated financial tools.
Beginner Tip
Citi's API requires a formal partner agreement and approval process before you can get production access, so plan ahead if you need it for a real product. Start with the sandbox environment to test your integration while your application is being reviewed.
Available Data
Example Response
{
"status": "success",
"data": {
"result": "Data from Citi",
"description": "All Citigroup account and statement data APIs",
"timestamp": "2025-01-15T10:00:00Z"
}
} Field Reference
accountId Unique identifier for the bank account, used in subsequent API calls. accountNickName The user-defined nickname for the account. currentBalance The current balance of the account in the account's currency. availableBalance The amount currently available to spend, excluding pending transactions. currencyCode ISO 4217 currency code for the account (e.g., "USD", "SGD"). Implementation Example
const url = "https://sandbox.developerhub.citi.com/api-catalog-list";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
headers: {
"X-API-Key": "YOUR_API_KEY"
}
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data); What Can You Build?
Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.
Common Errors & Troubleshooting
Matrix Score Breakdown
Partially tested on Apr 5, 2026
Technical Specifications
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