SERVICE / DETAILother

base-gas-x402

GET base-gas-x402-production.up.railway.app/gas

OPEN SERVICE ↗
SONAR SCORE0.706
LIVE PRICE0.005000
BAZAAR LIVEcompatible
CDP INDEXEDno
DECISION EVIDENCE

Why an agent can trust this route.

18 observations in the last 24h
HANDSHAKE SUCCESS94.4%402 challenge reachable
PAID DELIVERY0.0%settlement observed
P90 LATENCY2882msrecent response window
PRICE DRIFT0.0%advertised vs observed

Sonar evidence is advisory. Paid delivery is shown as verified only when paid probes are available; otherwise route estimates use the unpaid handshake as a clearly labeled proxy.

SONAR PROBE HISTORY / 30D

Observed outcomes

JSON ↗
LIVE ENDPOINT METADATA

Live Base mainnet gas: EIP-1559 base fee, low/medium/high priority tiers in gwei, and a transaction cost estimate for any gas limit.

Resource: base-gas-x402-production.up.railway.app/gas

Network: eip155:8453 · Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 · Pay to: 0x0D083590c048A243e24a75E3a7C968145DE25B44

Payment methods: — · Last validation: 2026-09-14 16:37:01.658+00

{
  "input": {
    "type": "object",
    "required": [
      "type",
      "method"
    ],
    "properties": {
      "type": {
        "type": "string",
        "const": "http"
      },
      "method": {
        "enum": [
          "GET"
        ],
        "type": "string"
      },
      "queryParams": {
        "type": "object",
        "required": [],
        "properties": {
          "gasLimit": {
            "type": "integer",
            "default": 21000,
            "maximum": 30000000,
            "minimum": 21000,
            "description": "Gas units to price the cost estimate against. Defaults to 21000 (a plain ETH transfer). Use ~65000 for an ERC-20 transfer, ~85000 for an NFT mint, ~180000 for a Uniswap swap, or ~1500000 for a contract deploy."
          }
        }
      }
    },
    "additionalProperties": false
  },
  "output": {
    "type": "object",
    "required": [
      "type"
    ],
    "properties": {
      "type": {
        "type": "string"
      },
      "example": {
        "type": "object"
      }
    }
  },
  "paymentRequirements": [
    {
      "raw": {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x0D083590c048A243e24a75E3a7C968145DE25B44",
        "amount": "5000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0x0D083590c048A243e24a75E3a7C968145DE25B44",
      "scheme": "exact",
      "network": "eip155:8453",
      "amountAtomic": "5000"
    }
  ]
}
METADATA PROVENANCE

Source catalog records are retained separately from live endpoint observations. Sonar score, uptime, and latency are advisory metrics. CDP indexing is not inferred from validation.