Who owns a given ERC721 token id, plus its tokenURI and collection name in the s
Who owns a given ERC721 token id, plus its tokenURI and collection name in the same call. Answers is this NFT still theirs without an indexer or an API key. Via eth_call (ownerOf).
Answeringour last check, 2026-09-24
1 of 1checks answered this week
19 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
GET https://flat-rate-llm.kikoribera03.workers.dev/v1/evm/nft-owner
| Category | Market data |
|---|---|
| Provider host | flat-rate-llm.kikoribera03.workers.dev |
| Networks | eip155:137, eip155:42161, eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.005 | 19 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"chain": "ethereum",
"contract": "0xED5AF388653567Af2F388E6224dC7C4b3241C544",
"tokenId": "1"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"chain": {
"description": "base | ethereum | polygon | arbitrum | optimism.",
"type": "string"
},
"contract": {
"description": "ERC721 contract address.",
"type": "string"
},
"tokenId": {
"description": "Token id, in decimal.",
"type": "string"
}
},
"required": [
"contract",
"tokenId"
],
"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"
}