Use when you meet an unknown address on Base, Ethereum, Arbitrum, Optimism or Po
Use when you meet an unknown address on Base, Ethereum, Arbitrum, Optimism or Polygon and need to know what it is in one call: has code and its size, ERC-20 (name, symbol, decimals, supply), ERC-721 or ERC-1155 (via ERC-165 supportsInterface), and whether it is an EIP-1967 proxy and its implementation.
Answeringour last check, 2026-09-25
1 of 1checks answered this week
944 msmedian answer time
$0.002listed price per call
$0.002price 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/contract-profile
| Category | Code and developer |
|---|---|
| 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 | $0.002 | 944 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"chain": "base"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$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"
}