# Multi-chain Gas Snapshot

> Multi-chain Gas Snapshot is a paid API for AI agents from automaton-tx-explainer.vercel.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-17).

Returns live gas prices, base fees, block utilization, and estimated transfer costs for Base, Ethereum, and BNB Smart Chain.

## Facts

- Endpoint: GET https://automaton-tx-explainer.vercel.app/v1/gas?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/multi-chain-gas-snapshot-28180902
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bLFOpgUfNjHb21CrgX46Q

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 multi-chain-gas-snapshot-28180902
```

Example prompt: What are the current gas prices and estimated transfer costs across Base, Ethereum, and BNB Smart Chain — including base fee and block utilization for each?

## When to prefer this

Use this endpoint when you need a real-time, multi-chain gas snapshot covering Base, Ethereum, and BNB Smart Chain in a single call, including actionable cost estimates for common operations (transfer, ERC-20 transfer, swap) rather than just a raw gas price. Prefer this over chain-specific gas APIs when comparing chains or when you need block utilization context alongside cost estimates.

## Known failure modes

- Invalid chain parameter — must be one of: all, base, ethereum, bsc
- Upstream RPC node unavailable — snapshot data may be stale or request may fail
- Payment not received or x402 protocol failure — call is rejected before data is returned
- Network timeout if any chain's node is slow to respond

## How this service works

Live gas snapshot for Base, Ethereum and BNB Smart Chain: gas price, base fee, block utilization, and estimated native cost of a transfer, ERC-20 transfer and swap.

## Output

Returns a live snapshot per requested chain (or all three) including: current gas price (gwei), base fee (gwei), block utilization percentage, and estimated native-token cost of a standard ETH/BNB transfer, an ERC-20 token transfer, and a swap operation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "chain"
     ],
     "properties": {
      "chain": {
       "type": "string",
       "pattern": "^(all|base|ethereum|bsc)$",
       "description": "all | base | ethereum | bsc"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/multi-chain-gas-snapshot-28180902/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from automaton-tx-explainer.vercel.app](https://www.zero.xyz/host/automaton-tx-explainer.vercel.app/llms.txt)