# Vextorium EVM Transaction Lookup

> Vextorium EVM Transaction Lookup is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-19).

Fetches detailed on-chain transaction data for a given EVM transaction hash across multiple networks including Base, Ethereum, Arbitrum, and more.

## Facts

- Endpoint: POST https://api.vextorium.com/v1/evm-transaction?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-evm-transaction-lookup-cec44c51
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MPMv6ZvVParC9P00g9tGy

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-transaction-lookup-cec44c51 -d '<json body>'
```

Example prompt: Can you look up the EVM transaction 0x9de0044cbae3b8df09402ca5a6ac348c307e68918216a0b2d35133811bef03b8 on Base and tell me who sent it, what function was called, and how much gas was used?

## When to prefer this

Use this endpoint when you need structured, decoded on-chain transaction data for EVM-compatible networks (Base, Ethereum, Arbitrum, Optimism, Polygon, BNB, Avalanche, Gnosis, Linea, Scroll, Sonic, Unichain) and want gas details, sender, block, and input data in a single call without running your own node. Pay-per-call at $0.003 USDC via x402 makes it ideal for agents that need occasional transaction lookups without a subscription.

## Known failure modes

- Invalid or malformed transaction hash returns an error
- Transaction hash not found on the specified network
- Unsupported network name causes validation error
- Network mismatch — hash exists on a different chain than specified
- RPC timeout or node unavailability for specific chain

## How this service works

558 pay-per-call data APIs for AI agents: Solana and EVM on-chain data, tokenized stocks, DeFi, Hyperliquid, economy and official statistics, FX, validation, web and developer tools. Pay in USDC via x402.

## Output

Returns a JSON object with full transaction details including the hash, sender address (from), recipient address (a), block number, transaction type, nonce, value transferred, native currency symbol, network name, chain ID, pending status, function selector, input data, gas limit, gas price in gwei, max fee in gwei, and max priority fee in gwei.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "hash_tx": {
   "type": "string"
  },
  "network": {
   "enum": [
    "base",
    "ethereum",
    "arbitrum",
    "optimism",
    "polygon",
    "bnb",
    "avalanche",
    "gnosis",
    "line",
    "scroll",
    "sonic",
    "unichain"
   ],
   "type": "string",
   "description": "Chain (default base)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "a": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
  "from": "0x772003a2e9c2ccc8af956870a37a66f64f8cec38",
  "hash": "0x9de0044cbae3b8df09402ca5a6ac348c307e68918216a0b2d35133811bef03b8",
  "type": 2,
  "block": 51998598,
  "input": "0xcf092995000000000000000000000000a8fc873625b2cd39e2bdda92a2abed165c66868f000000000000000000000000b9f06d2734b7e9d7b21b64c4d8b95bd774b71acf0000000000000000000000000000000000000000000000000000000000000bb800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000…",
  "nonce": 1569875,
  "value": 0,
  "native": "ETH",
  "network": "base",
  "pending": false,
  "chain_id": 8453,
  "selector": "0xcf092995",
  "gas_limit": 113791,
  "max_fee_gwei": 0.02625,
  "gas_price_gwei": 0.00625,
  "max_priority_gwei": 0.00125
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-evm-transaction-lookup-cec44c51/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)