# Mythos Multi-Chain Gas Tracker

> Mythos Multi-Chain Gas Tracker is a paid API for AI agents from fiatdock.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-27).

Retrieves current gas prices and fee estimates across multiple blockchain networks in a single call

## Facts

- Endpoint: GET https://fiatdock.com/s/svc_9805fe0d-2b72-4dd7-8ba9-a06649e4ff73?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mythos-multi-chain-gas-tracker-e91479af
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4AHt-tcbVUXjXl5y2HgXp

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 mythos-multi-chain-gas-tracker-e91479af
```

Example prompt: What are the current gas prices across all the major chains right now? I want to see Ethereum, and any other networks tracked, so I can pick the cheapest one for my transaction.

## When to prefer this

Choose this endpoint when you need real-time gas price data across multiple blockchains in a single lightweight GET call, especially in agentic workflows where you want to compare cross-chain transaction costs before executing. Prefer it over single-chain gas APIs when multi-chain coverage matters, and over manual RPC queries when you want a pay-per-call, zero-infrastructure approach via x402 micropayments.

## Known failure modes

- Upstream gas oracle unavailable — returns 5xx or empty data
- Rate limiting if called too frequently beyond pay-per-call quota
- Payment failure via x402 if USDC balance is insufficient — returns 402 Payment Required
- Stale data if the underlying chain node is lagging
- Network-specific data missing if a chain is temporarily unsupported

## How this service works

Pay-per-call: Mythos Multi-Chain Gas Tracker

## Output

Returns current gas fee data for multiple blockchain networks, including gas price levels (e.g. slow, standard, fast) in gwei or native units, base fees, priority fees, and estimated transaction costs per network.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {}
    }
   },
   "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/mythos-multi-chain-gas-tracker-e91479af/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fiatdock.com](https://www.zero.xyz/host/fiatdock.com/llms.txt)