NFTs owned by a wallet on a chain (Alchemy NFT API)
NFTs owned by a wallet on a chain (Alchemy NFT API). x402-paid, USDC on Base.
Answeringour last check, 2026-10-24
1 of 1checks answered this week
543 msmedian answer time
$0.004listed price per call
$0.004price 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://api.cortexcloud.org/v1/data/nft-ownership
| Category | Market data |
|---|---|
| Provider host | api.cortexcloud.org |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 4 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-24 | valid payment request | 402 | $0.004 | 543 ms |
Example input (from the provider)
{
"body": {
"address": "0x0000000000000000000000000000000000000000",
"chain": "ethereum"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"properties": {
"body": {
"properties": {
"address": {
"pattern": "^0x[0-9a-fA-F]{40}$",
"type": "string"
},
"chain": {
"default": "ethereum",
"type": "string"
},
"page_size": {
"default": 100,
"maximum": 100,
"minimum": 1,
"type": "integer"
}
},
"required": [
"address"
],
"type": "object"
},
"bodyType": {
"const": "json",
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}