# Tron USDT Transfer Watch

> Tron USDT Transfer Watch is a paid API for AI agents from agentsvc.io, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-20).

Polls a Tron address for incoming/outgoing USDT and USDC (TRC-20) transfers since the last call, returning transfer details and TRX balance with cursor-based pagination.

## Facts

- Endpoint: POST https://agentsvc.io/api/v1/proxy/tron-watch?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tron-usdt-transfer-watch-1251235c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vMZiSrMMZ2CbwQBZOcSF0

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability tron-usdt-transfer-watch-1251235c -d '<json body>'
```

Example prompt: Keep watching my Tron address TXyz123...abc for any incoming USDT or USDC transfers — check the last 2 hours on the first call and use the cursor I give you on subsequent calls so we don't miss anything.

## When to prefer this

Choose this endpoint when you need lightweight, cursor-driven polling for TRC-20 USDT/USDC transfers on the Tron network — especially for deposit detection and payment confirmation workflows where you want only new transfers since your last check, without replaying history. Prefer it over generic blockchain explorers when you need a simple looping pattern with built-in cursor state, direction metadata, and TRX balance in one call.

## Known failure modes

- Invalid Tron address format (must start with T) returns a validation error
- Cursor from a different address or expired session may return an error or restart from scratch
- lookback_hours outside 1–6 range may be clamped or rejected
- No transfers found returns an empty list (not an error)
- Network or Tron node latency may cause occasional timeouts
- Passing no cursor on the second call restarts the window from the last hour

## How this service works

Watch a Tron address for USDT and USDC (TRC-20) transfers in a loop: each call returns only transfers since your last call with amount, direction, counterparty, time and link, plus the TRX balance. First call covers the last hour (lookback_hours up to 6) and returns a cursor; pass it back next time. For deposit detection and payment confirmation on Tron.

## Output

Returns a list of USDT and USDC (TRC-20) transfers since the last call, each with amount, direction (in/out), counterparty address, timestamp, and a block explorer link, plus the current TRX balance of the address and a cursor to pass into the next call.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "cursor": {
   "type": "string",
   "description": "Cursor from the previous call"
  },
  "address": {
   "type": "string",
   "description": "Tron address starting with T"
  },
  "lookback_hours": {
   "type": "number",
   "default": 1,
   "description": "First call only, 1 to 6"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {},
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tron-usdt-transfer-watch-1251235c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentsvc.io](https://www.zero.xyz/host/agentsvc.io/llms.txt)