# Vextorium EVM Operation Cost Estimator

> Vextorium EVM Operation Cost Estimator is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-29).

Returns the current USD cost of a specific EVM operation (native transfer, ERC-20 transfer, DEX swap, or NFT mint) across 12 EVM chains, identifying the cheapest network.

## Facts

- Endpoint: POST https://api.vextorium.com/coste-operacion-pago?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-evm-operation-cost-estimator-9371be06
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_t1ddqSx0XxVCW1907Pk_L

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 vextorium-evm-operation-cost-estimator-9371be06 -d '<json body>'
```

Example prompt: What does an ERC-20 transfer cost right now across all supported EVM chains — and which one is the cheapest?

## When to prefer this

Choose this endpoint when you need a real-time, multi-chain USD cost comparison for a specific on-chain operation (native transfer, ERC-20 transfer, DEX swap, NFT mint) across 12 popular EVM networks simultaneously. Prefer it over single-chain gas APIs when the goal is to find the cheapest chain for a given operation type, or when building cost-aware routing logic for multi-chain applications.

## Known failure modes

- Missing or invalid 'operacion' enum value causes schema validation error
- Upstream gas oracle unavailability may result in null cost values for some chains
- Network congestion may cause stale or delayed gas price data
- Unsupported operation type returns an error or empty response

## How this service works

What a typical operation costs right now in USD on 12 EVM chains (Ethereum, Base, Arbitrum, Optimism, Polygon, BNB, Avalanche, Gnosis, Linea, Scroll, Sonic, Unichain): native transfer, ERC-20 transfer, DEX swap or NFT mint, sorted cheapest first.

## Output

A JSON object containing a list of EVM networks each with: chain name, estimated gas units, gas price in gwei, native token price in USD, and total operation cost in USD. Also includes the name of the cheapest chain, the operation type queried, and the data source used.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "operacion": {
   "enum": [
    "transferencia_nativa",
    "transferencia_erc20",
    "swap_dex",
    "mint_nft"
   ],
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-evm-operation-cost-estimator-9371be06/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)