# Multichain Gas Tracker: 5 EVM Chains + Bitcoin Fees

> Multichain Gas Tracker: 5 EVM Chains + Bitcoin Fees is a paid API for AI agents from agent-data-tools.revmesh2074.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).

Returns current gas prices across Base, Ethereum, Arbitrum, Optimism, and Polygon plus Bitcoin fee rates, sorted cheapest first, with USD transfer costs.

## Facts

- Endpoint: GET https://agent-data-tools.revmesh2074.workers.dev/pack/gas-tracker?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Provider: agent-data-tools.revmesh2074.workers.dev
- Website: https://agent-data-tools.revmesh2074.workers.dev
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-data-tools-revmesh2074-workers-dev-multichain-gas-tracker-5-evm-7eff705f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_t1dBnhSZQBP9WzwAsBhD5

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 agent-data-tools-revmesh2074-workers-dev-multichain-gas-tracker-5-evm-7eff705f
```

Example prompt: Which EVM chain has the cheapest gas right now, and what would a plain ETH transfer cost in dollars on each of Base, Ethereum, Arbitrum, Optimism, and Polygon? Also grab the current Bitcoin fee rate.

## When to prefer this

Choose this endpoint when you need a cross-chain gas comparison in a single call rather than querying each chain separately. It is more cost-efficient than buying individual per-chain gas tools. Ideal for wallets displaying live fee estimates, agents routing transactions to the cheapest chain, or dashboards tracking fee trends across EVM networks and Bitcoin simultaneously.

## Known failure modes

- One or more chains may fail to return data, listed in the 'failed' object while others still succeed
- Bitcoin fee rate fetch may fail independently
- Stale gas data if upstream RPC nodes are lagging
- Unknown keys in 'only' parameter are silently ignored, returning the full response
- ETH/USD price may lag if Uniswap oracle is stale

## How this service works

One call for current gas prices on Base, Ethereum, Arbitrum, Optimism and Polygon: gas price, base fee and priority fee in gwei and what a plain transfer costs in the native coin and, for the ETH chains, in US dollars (Uniswap ETH price), sorted cheapest first, plus Bitcoin fee rates in sat/vB. Cheaper than the tools bought one by one. Use to pick the cheapest chain, time a transaction or show fees in a wallet.

## Output

A JSON object with an array of chains sorted cheapest first, each containing chain name, symbol, baseFeeGwei, gasPriceGwei, priorityFeeGwei, transferCost (native), and transferUsd (USD cost of a plain transfer). Also includes top-level ethUsd (ETH price), cheapest (chain name), a bitcoin object with nextBlock and hour fee rates in sat/vB, and a failed object listing any chains that errored.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "only": {
   "type": "string",
   "description": "Optional: comma-separated top-level result keys to keep, for a smaller answer (for example only=price,symbol); unknown keys are ignored and an empty match returns the full result"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "pack": {
   "type": "string"
  },
  "chains": {
   "type": "array",
   "items": {
    "type": "object",
    "properties": {
     "chain": {
      "type": "string"
     },
     "symbol": {
      "type": "string"
     },
     "baseFeeGwei": {
      "type": "string"
     },
     "transferUsd": {
      "type": "number"
     },
     "gasPriceGwei": {
      "type": "string"
     },
     "transferCost": {
      "type": "string"
     },
     "priorityFeeGwei": {
      "type": "string"
     }
    }
   }
  },
  "ethUsd": {
   "type": "number"
  },
  "failed": {
   "type": "object",
   "properties": {}
  },
  "bitcoin": {
   "type": "object",
   "properties": {
    "hour": {
     "type": "number"
    },
    "unit": {
     "type": "string"
    },
    "nextBlock": {
     "type": "number"
    }
   }
  },
  "cheapest": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-data-tools-revmesh2074-workers-dev-multichain-gas-tracker-5-evm-7eff705f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-data-tools.revmesh2074.workers.dev](https://www.zero.xyz/host/agent-data-tools.revmesh2074.workers.dev/llms.txt)