Api Endpoint

Aether

Estimate the gas and the cost in ETH and USD of a Base transaction before signing it. Input: to, and optionally from, data and value

Open interactive test console

Offering

Provider: aether-x402.vercel.app
Method: POST
Offering type: Api Endpoint
Transport type: http
Category: Blockchain And Crypto
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://aether-x402.vercel.app/v1/base/estimate-gas
MIME type: Not provided
First seen: 2026-10-16T01:51:02.144Z
Last seen: 2026-11-01T15:06:40.170Z
Tags: Base, Gas, estimate, Transaction

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1: 0.002 USDC
Atomic price: 2000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "payTo": "0x2B77a25a8308c30AE37781b8a0D2A21C6211e812"
  }
]

Observed health

Status: Healthy
Latest latency: 46 ms
Average latency: 432 ms
HTTP status: 200
Last checked: 2026-11-02T03:03:41.978Z
Reachability: 100% over 13 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "additionalProperties": false,
  "properties": {
    "body": {
      "additionalProperties": false,
      "properties": {
        "data": {
          "maxLength": 20000,
          "pattern": "^0x[0-9a-fA-F]*$",
          "type": "string"
        },
        "from": {
          "pattern": "^0x[0-9a-fA-F]{40}$",
          "type": "string"
        },
        "to": {
          "pattern": "^0x[0-9a-fA-F]{40}$",
          "type": "string"
        },
        "value": {
          "pattern": "^[0-9]+$",
          "type": [
            "string",
            "integer"
          ]
        }
      },
      "required": [
        "to",
        "from"
      ],
      "type": "object"
    },
    "bodyType": {
      "enum": [
        "json",
        "form-data",
        "text"
      ],
      "type": "string"
    },
    "method": {
      "enum": [
        "POST"
      ],
      "type": "string"
    },
    "type": {
      "const": "http",
      "type": "string"
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "type": "object"
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "additionalProperties": false,
          "properties": {
            "data": {
              "maxLength": 20000,
              "pattern": "^0x[0-9a-fA-F]*$",
              "type": "string"
            },
            "from": {
              "pattern": "^0x[0-9a-fA-F]{40}$",
              "type": "string"
            },
            "to": {
              "pattern": "^0x[0-9a-fA-F]{40}$",
              "type": "string"
            },
            "value": {
              "pattern": "^[0-9]+$",
              "type": [
                "string",
                "integer"
              ]
            }
          },
          "required": [
            "to",
            "from"
          ],
          "type": "object"
        },
        "bodyType": {
          "enum": [
            "json",
            "form-data",
            "text"
          ],
          "type": "string"
        },
        "method": {
          "enum": [
            "POST"
          ],
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "bodyType",
        "body"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}