# EVM Gas Price Lookup — UnyKorn / Genesis402

> EVM Gas Price Lookup — UnyKorn / Genesis402 is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Returns the current gas price for any of ten supported EVM-compatible blockchain networks

## Facts

- Endpoint: POST https://twin.unykorn.org/evm-gas-price?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/evm-gas-price-lookup-unykorn-genesis402-d6acc0a3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wyXafwLefc0xhjUcuFM6F

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 evm-gas-price-lookup-unykorn-genesis402-d6acc0a3 -d '<json body>'
```

Example prompt: What's the current gas price on Arbitrum right now?

## When to prefer this

Choose this endpoint when you need real-time gas price data for any of the ten supported EVM chains (Ethereum, Base, Polygon, Arbitrum, Optimism, BSC, Avalanche, Gnosis, Linea, Scroll) in a single low-latency call. It is ideal for pre-transaction cost estimation, DeFi bot timing logic, or cross-chain fee comparisons. Prefer this over scraping block explorers or maintaining your own RPC connections when you need a pay-per-call, infrastructure-free solution with x402 micropayment billing.

## Known failure modes

- Unsupported chain name passed — only the ten enum values are accepted
- Network connectivity issues to the target chain's RPC
- Payment failure via x402 protocol results in 402 response
- Malformed request body or missing chain parameter
- Transient upstream RPC unavailability for the requested chain

## How this service works

Current gas price on any of ten EVM chains — Genesis402 / UnyKorn Operator Network

## Output

A JSON object with a boolean ok field, a type field identifying the response as evm-gas-price, and a receipt object containing the transaction hash, amount in USD, and a receipt ID, plus a generated_at ISO 8601 timestamp. The gas price data for the requested chain is included in the response payload.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "params": {
   "type": "object",
   "properties": {
    "chain": {
     "enum": [
      "ethereum",
      "base",
      "polygon",
      "arbitrum",
      "optimism",
      "bsc",
      "avalanche",
      "gnosis",
      "linea",
      "scroll"
     ],
     "type": "string"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "type": "evm-gas-price",
  "receipt": {
   "tx_hash": "0x<64hex>",
   "amount_usd": 0.002,
   "receipt_id": "g402-<16hex>"
  },
  "generated_at": "<iso8601>"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/evm-gas-price-lookup-unykorn-genesis402-d6acc0a3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from twin.unykorn.org](https://www.zero.xyz/host/twin.unykorn.org/llms.txt)