Use when you need to know whether an address on Base, Ethereum, Arbitrum, Optimi
Use when you need to know whether an address on Base, Ethereum, Arbitrum, Optimism or Polygon is a deployed smart contract, via a live eth_getCode call. Returns a boolean and the deployed bytecode size in bytes.
Answeringour last check, 2026-09-25
1 of 1checks answered this week
941 msmedian answer time
$0.001listed price per call
$0.001price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://biosfera.46-62-215-147.sslip.io/o/is-contract
| Category | Market data |
|---|---|
| Provider host | biosfera.46-62-215-147.sslip.io |
| Networks | eip155:137, eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-25 | valid payment request | 402 | $0.001 | 941 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"address": "0x4200000000000000000000000000000000000006",
"chain": "base"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"additionalProperties": false,
"properties": {
"address": {
"pattern": "^0x[0-9a-fA-F]{40}$",
"type": "string"
},
"chain": {
"enum": [
"base",
"ethereum",
"arbitrum",
"optimism",
"polygon"
],
"type": "string"
}
},
"required": [
"chain",
"address"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}