Is this Base contract an upgradeable proxy?
Is this Base contract an upgradeable proxy? Proxy contract detection for EIP-1967 (transparent/UUPS), beacon, or EIP-1822 patterns, returning the implementation address.
Answeringour last check, 2026-10-10
1 of 1checks answered this week
861 msmedian answer time
$0.005listed price per call
$0.005price 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
POST https://x402.agentindex.world/base/proxy
| Category | Everything else |
|---|---|
| Provider host | x402.agentindex.world |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-10 | valid payment request | 402 | $0.005 | 861 ms |
Example input (from the provider)
{
"body": {
"address": "0xb125e6687d4313864e53df431d5425969c15eb2f"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"address": {
"title": "Address",
"type": "string"
}
},
"required": [
"address"
],
"title": "AddressInput",
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"address": {
"title": "Address",
"type": "string"
},
"implementation": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Implementation"
},
"is_proxy": {
"title": "Is Proxy",
"type": "boolean"
},
"proxy_type": {
"title": "Proxy Type",
"type": "string"
}
},
"required": [
"address",
"is_proxy",
"proxy_type",
"implementation"
],
"title": "ProxyOutput",
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}