Index onlineMerchant portal
Api Endpoint

base-call

Generic read-only eth_call against any Base mainnet contract - pass raw calldata, get the raw return data back.

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/call
MIME type
application/json
First seen
2026-10-16T01:50:32.458Z
Last seen
Tags
base rpc, eth_call, generic call, Base mainnet, contract read

Website

Payment pricing

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

Payment option 1
0.005 USDC
Atomic price: 5000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "payTo": "0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d"
  }
]

Observed health

Status
Reachable
Latest latency
1309 ms
Average latency
1226 ms
HTTP status
405
Last checked
Reachability
100% over 14 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": {
        "to": {
          "title": "To",
          "type": "string"
        },
        "data": {
          "default": "0x",
          "title": "Data",
          "type": "string"
        },
        "from_address": {
          "anyOf": [
            {
              "type": "string"
            },
            {
              "type": "null"
            }
          ],
          "default": null,
          "title": "From Address"
        },
        "value_wei": {
          "default": 0,
          "title": "Value Wei",
          "type": "integer"
        }
      },
      "required": [
        "to"
      ],
      "title": "CallInput",
      "type": "object"
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string"
    },
    "example": {
      "type": "object",
      "properties": {
        "to": {
          "title": "To",
          "type": "string"
        },
        "return_data": {
          "title": "Return Data",
          "type": "string"
        }
      },
      "required": [
        "to",
        "return_data"
      ],
      "title": "CallOutput"
    }
  },
  "required": [
    "type"
  ]
}