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Saylor Innovations ERC-165 Interface Detector
x402
Saylor Innovations ERC-165 Interface Detector is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-27).
Detects ERC-165 interface support (ERC-721, ERC-1155, metadata, royalties, and more) for a smart contract on any of 16 supported EVM chains, returning a kind label and ERC-20 hint.
Price / call$0.01
Success—
StatusUnknown
How this service works
ERC-165 interface detection for 16 EVM chains: ERC-721, ERC-1155, metadata, royalties and update events, with a kind label and ERC-20 hint.
Output
Returns a JSON object with: the queried chain name and EIP-155 chain ID, the probed contract address, a 'kind' label (e.g. 'ERC-721', 'ERC-1155', 'ERC-20', 'unknown'), a 'supports' map of boolean flags per detected interface (ERC-721, ERC-1155, metadata extension, royalties/ERC-2981, update events), an 'erc165_conformant' boolean, an 'answers_erc20_calls' boolean for fungible token hint, a plain-language 'note' summarizing the result, and a 'source' field describing how the data was read.
Example use cases
NFT marketplace contract verification
“I need to list a collection on my marketplace — can you check whether contract 0x495f947276749Ce646f68AC8c248420045cb7b5e on Ethereum is ERC-1155 and supports the metadata extension?”
Royalty enforcement check for a game asset
“Before integrating this gaming asset contract on Polygon — address 0x2953399124F0cBB46d2CbACD8A89cF0599974963 — can you tell me if it supports ERC-2981 royalties so I know whether to enforce them on secondary sales?”
Token type disambiguation on Base
“I have a contract address on Base — 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 — and I'm not sure if it's an NFT or a fungible token. Can you identify the contract kind and whether it answers ERC-20 calls like decimals and totalSupply?”
Technical details
Endpoint
GEThttps://saylorinnovations.com/api/chain/interfaces?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need fast, multi-chain ERC-165 interface detection across 16 EVM networks in a single call, with structured interface flags and a human-readable kind label. It is ideal when you need to programmatically determine whether a contract is an NFT (ERC-721 or ERC-1155), supports royalties (ERC-2981), or is a fungible token (ERC-20 hint), without deploying your own RPC infrastructure. Prefer it over generic blockchain explorers when you need structured JSON output ready for agent consumption rather than a human-readable UI.
Side effects
- Invalid or non-checksummed contract address returns an error
- Unsupported chain name or chain ID returns a validation error
- Contract address that is an EOA (externally owned account) or non-ERC-165 contract may return erc165_conformant: false with null supports
- Network RPC timeouts may produce incomplete results
- Contract deployed on a chain different from the one specified will yield incorrect or empty results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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