# MERX TRON x402 Transaction Cost Estimator

> MERX TRON x402 Transaction Cost Estimator is a paid API for AI agents from merx.exchange, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Estimates the TRON network energy and bandwidth cost for a USDT transaction before execution, enabling AI agents to plan payments on the TRON blockchain.

## Facts

- Endpoint: POST https://merx.exchange/x402/tron/estimate
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/merx-tron-x402-transaction-cost-estimator-ab326029
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_euY6NGhfdWdTl_kPdzOx3

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 merx-tron-x402-transaction-cost-estimator-ab326029 -d '<json body>'
```

Example prompt: Before I send 50 USDT on TRON from my wallet to TXyz123...abc, can you estimate the energy and bandwidth cost using MERX so I know if I have enough TRX to cover it?

## When to prefer this

Use this endpoint when an AI agent needs to pre-flight a TRON USDT payment and determine whether sufficient energy/bandwidth is available before committing to a transaction. Prefer over direct execution when cost validation or budget checks are required first. Ideal for x402-based payment workflows on the TRON network.

## Known failure modes

- Invalid TRON address format returns 400 error
- Unsupported token type (non-TRC20) returns error
- Network congestion may cause stale estimates
- Zero-amount transaction request may be rejected
- Missing required sender or recipient fields returns validation error

## How this service works

TRON payment infrastructure for AI agents. Send and receive USDT with automatic energy, monitor wallets with less than 3s detection, access real-time blockchain data. TRON x402 facilitator (first in coinbase/x402 ecosystem registry).

## Output

Returns an estimate of the TRON network resources (energy units, bandwidth bytes, and equivalent TRX cost) required to execute a USDT transfer, helping agents decide whether to proceed with the transaction or acquire additional energy.

## Example request

```json
{
 "operation": "trc20_transfer",
 "amount_usdt": "10.5",
 "description": "Test USDT transfer cost estimation",
 "pay_to_address": "TN3W4H6rK8aBa9QQF7mQK5XDGimMCHJ5we",
 "expires_in_seconds": 3600
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/merx-tron-x402-transaction-cost-estimator-ab326029/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from merx.exchange](https://www.zero.xyz/host/merx.exchange/llms.txt)