# Citiview Gas Price Feed

> Citiview Gas Price Feed is a paid API for AI agents from agents.citiviewgroup.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-14).

Returns live gas prices (base fee, priority tips, and USD transfer cost) for Ethereum, Base, Arbitrum, Optimism, and Polygon.

## Facts

- Endpoint: GET https://agents.citiviewgroup.com/v1/gas?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/citiview-gas-price-feed-f779dd46
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PfB67pOGkx3fscqNPhgfc

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 citiview-gas-price-feed-f779dd46
```

Example prompt: What are the current gas prices on Ethereum and Base — give me the slow, normal, and fast priority tips and the USD cost of a simple transfer right now.

## When to prefer this

Choose this endpoint when you need real-time, multi-chain gas fee data across the five major EVM networks (Ethereum, Base, Arbitrum, Optimism, Polygon) in a single call, including USD cost estimates for simple transfers. Prefer it over chain-specific RPC calls when you need a unified, normalized response across chains without managing multiple provider connections.

## Known failure modes

- Invalid chain name in 'chains' query param returns an error or omits that chain
- Upstream RPC node lag may cause slightly stale data during network congestion
- Payment failure via x402 protocol blocks the request before data is returned
- Empty or malformed 'chains' parameter may default to all five chains or return a 400 error

## How this service works

Live gas prices on Ethereum, Base, Arbitrum, Optimism and Polygon: gas price, next base fee, slow/normal/fast priority tips, and USD cost of a simple transfer.

## Output

Returns a structured object per requested chain containing: current gas price (gwei), predicted next base fee, slow/normal/fast priority fee tips, and estimated USD cost of a standard ETH transfer, all reflecting real-time network conditions.

## 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",
     "properties": {
      "chains": {
       "type": "string",
       "description": "Comma list; default all five"
      }
     }
    }
   },
   "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/citiview-gas-price-feed-f779dd46/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agents.citiviewgroup.com](https://www.zero.xyz/host/agents.citiviewgroup.com/llms.txt)