# Agent Data Bench – Gas Fee & Native Token Price Lookup

> Agent Data Bench – Gas Fee & Native Token Price Lookup is a paid API for AI agents from x402.deepsense.stream, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-28).

Returns the current gas fee ladder (slow/normal/fast with priority fee, max fee, and EIP-1559 base fee) for Base or Ethereum, or the priority-fee ladder for Solana, plus the native token price — all in one call.

## Facts

- Endpoint: GET https://x402.deepsense.stream/api/v1/market/gas?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-data-bench-gas-fee-native-token-price-lookup-44359285
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mXMwLfOVBqKfti9RCzKo9

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-bench-gas-fee-native-token-price-lookup-44359285
```

Example prompt: What are the current gas fees on Base — give me the slow, normal, and fast tiers with priority fee and max fee, plus the ETH price.

## When to prefer this

Use this endpoint when you need a complete, ready-to-use gas fee ladder (all speed tiers + native token price) for Ethereum, Base, or Solana in a single call. Prefer this over general blockchain RPC calls when you want pre-parsed, human-readable tier labels (slow/normal/fast) without doing raw fee computation yourself. Ideal for transaction builders, wallet UIs, and agents that need to recommend gas settings to users.

## Known failure modes

- Missing or invalid 'chain' query parameter returns a validation error
- Unsupported chain value (anything other than sol, eth, base) returns an error
- Upstream gas oracle or price feed unavailability may cause 5xx errors
- Payment not received or x402 payment header missing returns a 402 Payment Required

## How this service works

Fee inputs for the next transaction: gas ladder for Base or Ethereum (slow/normal/fast, priority fee, max fee, EIP-1559 base fee) or the priority-fee ladder for Solana, plus the native token price. One call for the numbers a transaction builder needs.

## Output

A structured response containing the gas fee ladder for the requested chain: for Ethereum and Base, this includes slow, normal, and fast tiers each with their priority fee and max fee, plus the EIP-1559 base fee. For Solana, it returns the priority fee ladder. All responses also include the current native token price (ETH for Ethereum/Base, SOL for Solana).

## 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": {
       "enum": [
        "sol",
        "eth",
        "base"
       ],
       "type": "string",
       "description": "Chain id: sol (Solana), eth (Ethereum), base (Base)"
      }
     }
    }
   },
   "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/agent-data-bench-gas-fee-native-token-price-lookup-44359285/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.deepsense.stream](https://www.zero.xyz/host/x402.deepsense.stream/llms.txt)