Use when an agent asks if a contract is an upgradeable proxy and where its code
Use when an agent asks if a contract is an upgradeable proxy and where its code is. Returns the standard (EIP-1967, beacon, UUPS, minimal, legacy, Safe, none), implementation, admin, beacon, slots and block read on Base, Ethereum, Optimism, Arbitrum or Polygon; 4 extra slots decoded. $0.003.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
27 msmedian answer time
$0.003listed price per call
$0.003price 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://api.oblique.markets/api/v1/paid/proxy-implementation
| Category | Code and developer |
|---|---|
| Provider host | api.oblique.markets |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 5 from 3 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.003 | 27 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"properties": {
"address": {
"description": "Contract address to inspect, 0x plus 40 hex characters (any case).",
"type": "string"
},
"block": {
"description": "'latest' (default) or a decimal block number; explicit blocks are immutable and cached longer.",
"type": "string"
},
"chain": {
"description": "Chain name (base, ethereum, optimism, arbitrum, polygon) or chain id (8453, 1, 10, 42161, 137). Default base.",
"enum": [
"base",
"ethereum",
"optimism",
"arbitrum",
"polygon",
"8453",
"1",
"10",
"42161",
"137"
],
"type": "string"
},
"slots": {
"description": "Up to 4 extra raw storage slots to read and decode: each a 0x bytes32 or a decimal slot number. GET accepts a comma-separated list.",
"items": {
"type": "string"
},
"type": "array"
}
},
"required": [
"address"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"address": {
"type": "string"
},
"admin": {
"type": "null"
},
"beacon": {
"type": "null"
},
"block_number": {
"type": "integer"
},
"block_tag": {
"type": "string"
},
"chain": {
"type": "string"
},
"chain_id": {
"type": "integer"
},
"extra_slots": {
"items": {
"properties": {
"as_address": {
"type": "null"
},
"as_bool": {
"type": "boolean"
},
"as_uint256": {
"type": "string"
},
"raw": {
"type": "string"
},
"slot": {
"type": "string"
}
},
"type": "object"
},
"type": "array"
},
"freshness": {
"properties": {
"cache": {
"type": "string"
},
"cache_age_seconds": {
"type": "integer"
},
"served_at": {
"type": "string"
},
"ttl_seconds": {
"type": "integer"
}
},
"type": "object"
},
"implementation": {
"type": "string"
},
"implementation_has_code": {
"type": "boolean"
},
"implementation_name": {
"type": "string"
},
"is_contract": {
"type": "boolean"
},
"is_proxy": {
"type": "boolean"
},
"proxy_name": {
"type": "string"
},
"read_at": {
"type": "string"
},
"receipt": {
"properties": {
"payer": {
"type": "string"
},
"payment_network": {
"type": "string"
},
"sku": {
"type": "string"
}
},
"type": "object"
},
"rpc": {
"properties": {
"calls": {
"type": "integer"
},
"endpoint_class": {
"type": "string"
},
"hosts": {
"items": {
"type": "string"
},
"type": "array"
}
},
"type": "object"
},
"slots_read": {
"items": {
"properties": {
"label": {
"type": "string"
},
"raw": {
"type": "string"
},
"slot": {
"type": "string"
}
},
"type": "object"
},
"type": "array"
},
"source": {
"type": "string"
},
"standard": {
"type": "string"
}
},
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}