Index onlineMerchant portal
Api Endpoint

base-code

Check whether a Base mainnet address is a contract via eth_getCode - returns bytecode size, zero for an externally-owned account.

Open interactive test console

Offering

Provider
x402.agentindex.world
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://x402.agentindex.world/base/code
MIME type
application/json
First seen
2026-10-16T01:50:38.788Z
Last seen
Tags
base rpc, is contract, bytecode, Base mainnet, eth_getCode

Website

Payment pricing

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

Payment option 1
0.003 USDC
Atomic price: 3000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "3000",
    "payTo": "0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d"
  }
]

Observed health

Status
Reachable
Latest latency
1234 ms
Average latency
1153 ms
HTTP status
405
Last checked
Reachability
100% over 12 checks

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

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "POST",
        "PUT",
        "PATCH"
      ]
    },
    "bodyType": {
      "type": "string",
      "enum": [
        "json",
        "form-data",
        "text"
      ]
    },
    "body": {
      "properties": {
        "address": {
          "title": "Address",
          "type": "string"
        }
      },
      "required": [
        "address"
      ],
      "title": "AddressInput",
      "type": "object"
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string"
    },
    "example": {
      "type": "object",
      "properties": {
        "address": {
          "title": "Address",
          "type": "string"
        },
        "is_contract": {
          "title": "Is Contract",
          "type": "boolean"
        },
        "bytecode_size": {
          "title": "Bytecode Size",
          "type": "integer"
        }
      },
      "required": [
        "address",
        "is_contract",
        "bytecode_size"
      ],
      "title": "CodeOutput"
    }
  },
  "required": [
    "type"
  ]
}