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ERC-1155 Token Metadata URI Lookup
x402
ERC-1155 Token Metadata URI Lookup is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).
Returns the metadata URI for a specific ERC-1155 token ID on a given EVM-compatible blockchain contract.
Price / call$0.003
Success—
StatusUnknown
How this service works
Metadata URI for one ERC1155 token id — Genesis402 / UnyKorn Operator Network
Output
Returns a JSON object with ok:true, the type field set to 'erc1155-uri' (implying the URI string is included), a payment receipt with transaction hash, USD amount, and receipt ID, and a generated_at ISO8601 timestamp. The core result is the metadata URI string associated with the queried token ID on the specified contract and chain.
Example use cases
NFT marketplace metadata resolution
“I need the metadata URI for token ID 1024 on ERC-1155 contract 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D on Ethereum — I want to display the image and attributes in my marketplace.”
Multi-chain NFT inventory audit
“Can you fetch the metadata URI for token ID 0 from the ERC-1155 contract 0x3Fe1a4c1481c8351E91B64D5c398b159dE07cbc5 on Base so I can verify it's pointing to the right IPFS asset?”
Game asset URI verification
“Look up the token URI for ERC-1155 token ID 999 at contract 0xAbCd1234AbCd1234AbCd1234AbCd1234AbCd1234 on Arbitrum — I'm building a game inventory and need to confirm the metadata endpoint.”
Technical details
Endpoint
POSThttps://twin.unykorn.org/erc1155-uri?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to resolve the metadata URI for a specific ERC-1155 token on any of the 10 supported EVM chains without running your own RPC node. It is particularly useful for agents building NFT explorers, game asset managers, or multi-chain dashboards that need on-chain URI data without managing blockchain infrastructure. Prefer this over generic EVM RPC calls when you want a simple, paid, pre-authenticated lookup with a structured response.
Side effects
- Invalid contract address format (must be 0x-prefixed 40 hex chars) returns validation error
- Unsupported chain name returns enum validation error
- Token ID does not exist on contract may return empty or revert-based error
- Network connectivity issues to the specified chain RPC may cause timeouts
- Payment failure via x402 protocol prevents request from being processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| params | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"type": "erc1155-uri",
"receipt": {
"tx_hash": "0x<64hex>",
"amount_usd": 0.003,
"receipt_id": "g402-<16hex>"
},
"generated_at": "<iso8601>"
}
}Tags
x402
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