> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fyatu.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Deposit Address
> Retrieve your USDT deposit addresses for TRC20 (TRON) and ERC20 (Ethereum). GET /deposit-address. Requires accounts:read scope.
## Overview
Returns the **USDT deposit addresses** for your program account. Send USDT to either address to fund your account balance — the platform detects the on-chain transfer and credits your balance automatically once confirmations are met.
* **TRC20 (TRON)** — faster and cheaper transfers, recommended for regular top-ups
* **ERC20 (Ethereum)** — standard Ethereum network, wider exchange support
On the **first call** the addresses are generated (unique per business) and persisted. Every subsequent call returns the same cached addresses — they never change.
**Confirmations required:** 3 for both TRC20 and ERC20. A `billing.deposit.confirmed` webhook is fired when your balance is credited.
Only USDT is accepted. Do not send other tokens — unsupported assets will not be credited and cannot be recovered.
## Example
```bash cURL theme={null}
curl https://api.fyatu.com/api/v3.20/deposit-address \
-H "Authorization: Bearer $FYATU_API_KEY"
```
```javascript Node.js theme={null}
const resp = await fetch('https://api.fyatu.com/api/v3.20/deposit-address', {
headers: { 'Authorization': `Bearer ${process.env.FYATU_API_KEY}` }
});
const { data } = await resp.json();
console.log('TRC20:', data.trc20);
console.log('ERC20:', data.erc20);
```
```python Python theme={null}
import os, requests
resp = requests.get(
'https://api.fyatu.com/api/v3.20/deposit-address',
headers={'Authorization': f'Bearer {os.environ["FYATU_API_KEY"]}'}
)
data = resp.json()['data']
print(f"TRC20 ({data['token']}):", data['trc20'])
print(f"ERC20 ({data['token']}):", data['erc20'])
```
## Success Response (200)
```json theme={null}
{
"success": true,
"status": 200,
"message": "Deposit addresses retrieved",
"data": {
"token": "USDT",
"trc20": "TMxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
"erc20": "0xaabbccddeeff00112233445566778899aabbccdd"
},
"meta": {
"requestId": "req_a1b2c3d4e5f6a7b8c9d0e1f2",
"platform": "Fyatu CaaS",
"timestamp": "2026-05-25T10:00:00Z"
}
}
```
## Field Reference
| Field | Type | Description |
| ------- | ------ | ---------------------------------------------------- |
| `token` | string | Token accepted at these addresses. Always `USDT` |
| `trc20` | string | USDT deposit address on the TRON network (TRC20) |
| `erc20` | string | USDT deposit address on the Ethereum network (ERC20) |
## Error Codes
| Code | HTTP | Cause |
| -------------------- | ---- | --------------------------------- |
| `AUTH_TOKEN_MISSING` | 401 | No API key provided |
| `AUTH_TOKEN_INVALID` | 401 | API key not recognised or revoked |
| `INSUFFICIENT_SCOPE` | 403 | Key lacks `accounts:read` scope |
| `INTERNAL_ERROR` | 500 | Address generation failed |
## OpenAPI
````yaml v3.20/openapi.json GET /deposit-address
openapi: 3.1.0
info:
title: FYATU CaaS API v3.20
description: >-
FYATU Cards-as-a-Service API — API key authentication, Cardholder
lifecycle, Card issuance, Transactions, Webhooks, and Programs.
version: 3.20.0
contact:
name: FYATU Support
url: https://fyatu.com
email: support@fyatu.com
servers:
- url: https://api.fyatu.com/api/v3.20
description: >-
FYATU CaaS API — the environment (LIVE or SANDBOX) is determined by the
API key, not the URL
security:
- BearerAuth: []
tags:
- name: Meta
description: Liveness, account info, and supported event types
- name: Account
description: Account-level balance and funding status
- name: Programs
description: Read card program configuration
- name: Cardholders
description: Create and manage cardholder profiles
- name: Cards
description: Issue, fund, freeze, and terminate virtual cards
- name: Transactions
description: Read-only card transaction history
- name: Webhooks
description: Manage webhook endpoints for real-time event delivery
- name: Products
description: Read card product configurations
paths:
/deposit-address:
get:
tags:
- Account
summary: Get deposit addresses
description: >-
Returns the USDT deposit addresses for your program account. On the
first call the addresses are generated (unique per business via
Cryptomus) and persisted; every subsequent call returns the same cached
addresses. Send USDT to either address to fund your account balance —
the platform detects the on-chain transfer and credits your balance
automatically once confirmations are met.
operationId: getDepositAddress
responses:
'200':
description: Deposit addresses retrieved
content:
application/json:
schema:
type: object
properties:
success:
type: boolean
example: true
status:
type: integer
example: 200
message:
type: string
example: Deposit addresses retrieved
data:
type: object
properties:
token:
type: string
description: Token accepted at these addresses.
example: USDT
trc20:
type: string
description: >-
USDT deposit address on the TRON network (TRC20).
Requires 3 on-chain confirmations.
example: TMxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
erc20:
type: string
description: >-
USDT deposit address on the Ethereum network (ERC20).
Requires 3 on-chain confirmations.
example: '0xaabbccddeeff00112233445566778899aabbccdd'
meta:
$ref: '#/components/schemas/Meta'
example:
success: true
status: 200
message: Deposit addresses retrieved
data:
token: USDT
trc20: TMxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
erc20: '0xaabbccddeeff00112233445566778899aabbccdd'
meta:
requestId: req_a1b2c3d4e5f6a7b8c9d0e1f2
platform: Fyatu CaaS
timestamp: '2026-05-25T10:00:00Z'
'401':
$ref: '#/components/responses/Unauthorized'
'403':
$ref: '#/components/responses/Forbidden'
'429':
$ref: '#/components/responses/RateLimitExceeded'
'500':
$ref: '#/components/responses/InternalError'
components:
schemas:
Meta:
type: object
properties:
requestId:
type: string
example: req_a1b2c3d4e5f6a7b8c9d0e1f2
platform:
type: string
example: Fyatu CaaS
timestamp:
type: string
format: date-time
example: '2026-05-22T15:00:00Z'
Error:
type: object
properties:
success:
type: boolean
example: false
status:
type: integer
example: 422
message:
type: string
example: Human readable message
error:
$ref: '#/components/schemas/ErrorBody'
meta:
$ref: '#/components/schemas/Meta'
ErrorBody:
type: object
properties:
code:
type: string
example: VALIDATION_ERROR
detail:
type: string
example: dateOfBirth must be in YYYY-MM-DD format
responses:
Unauthorized:
description: Missing or invalid API key
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
examples:
missing:
summary: API key missing
value:
success: false
status: 401
message: API key is required
error:
code: AUTH_TOKEN_MISSING
detail: API key is required
meta:
requestId: req_a1b2c3d4e5f6a7b8c9d0e1f2
platform: Fyatu CaaS
timestamp: '2026-05-22T15:00:00Z'
invalid:
summary: API key invalid
value:
success: false
status: 401
message: Invalid API key
error:
code: AUTH_TOKEN_INVALID
detail: Invalid API key
meta:
requestId: req_a1b2c3d4e5f6a7b8c9d0e1f2
platform: Fyatu CaaS
timestamp: '2026-05-22T15:00:00Z'
Forbidden:
description: Scope denied or business suspended
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
example:
success: false
status: 403
message: Scope denied
error:
code: INSUFFICIENT_SCOPE
detail: This endpoint requires the cards:write scope
meta:
requestId: req_a1b2c3d4e5f6a7b8c9d0e1f2
platform: Fyatu CaaS
timestamp: '2026-05-22T15:00:00Z'
RateLimitExceeded:
description: Rate limit exceeded
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
example:
success: false
status: 429
message: Rate limit exceeded
error:
code: RATE_LIMIT_EXCEEDED
detail: Too many requests
meta:
requestId: req_a1b2c3d4e5f6a7b8c9d0e1f2
platform: Fyatu CaaS
timestamp: '2026-05-22T15:00:00Z'
InternalError:
description: Unexpected server error
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
example:
success: false
status: 500
message: Internal error
error:
code: INTERNAL_ERROR
detail: An unexpected error occurred
meta:
requestId: req_a1b2c3d4e5f6a7b8c9d0e1f2
platform: Fyatu CaaS
timestamp: '2026-05-22T15:00:00Z'
securitySchemes:
BearerAuth:
type: http
scheme: bearer
description: >-
API key from the FYATU CaaS portal. Pass as `Authorization: Bearer
`.
````