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Arbitrum One NFT Token Metadata
x402
Arbitrum One NFT Token Metadata is a paid API for AI agents from onchaincheck.dev, paid per call via x402, $0.008/call, status unknown (last checked 2026-10-30).
Fetches ERC-721/ERC-1155 token metadata on Arbitrum One including collection name, owner, token URI, traits, and a browser-loadable image URL resolved from IPFS, Arweave, HTTPS, or inline data URIs.
Price / call$0.008
Success—
StatusUnknown
How this service works
Metadata for an ERC-721 or ERC-1155 token on Arbitrum One: collection name, current owner (ERC-721), token URI, and the metadata JSON fetched and decoded from IPFS, Arweave, HTTPS or an inline data URI, with a browser-loadable image URL.
Output
Returns a JSON object with the chain identifier, contract address, token ID, token standard (ERC-721 or ERC-1155), collection name, current owner address, token URI, a browser-loadable image URL, and a fully decoded metadata object containing name, description, traits, rarity rank, OpenSea URL, and provenance of where the metadata was fetched from (IPFS, Arweave, HTTPS, or inline).
Example use cases
NFT portfolio trait inspection
“What are the traits and rarity rank for token ID 42 at contract 0xABCDEF1234567890abcdef1234567890ABCDEF12 on Arbitrum One? I want to know its attributes and see the image.”
Verify NFT ownership on Arbitrum
“Who currently owns token ID 7 of the NFT collection at 0x6325439389E0797Ab35752B4F43a14C004f22A9c on Arbitrum One? I need to confirm the owner address and collection name.”
Resolve IPFS metadata for display
“Fetch the full metadata for Arbitrum NFT contract 0x6325439389E0797Ab35752B4F43a14C004f22A9c, token 100 — I need a browser-loadable image URL and the decoded metadata so I can display it in my app.”
Technical details
Endpoint
GEThttps://onchaincheck.dev/arbitrum/nft?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need rich, decoded NFT metadata specifically on Arbitrum One — including IPFS/Arweave resolution, trait arrays, rarity, and a ready-to-display image URL — and don't want to handle raw RPC calls or IPFS gateway logic yourself. Prefer over generic blockchain RPC when you need metadata resolved across multiple URI schemes (IPFS, Arweave, HTTPS, data URIs) in one call.
Side effects
- Invalid contract address format returns a validation error
- Token ID not found on the contract returns a not-found error
- Token URI host unavailable falls back to Alchemy NFT API cache (noted in fetchedFrom field)
- IPFS or Arweave gateway timeouts may cause incomplete metadata
- Non-NFT contract address may return empty or error response
- Malformed token URI (unparseable metadata JSON) may result in partial metadata
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"chain": "arbitrum",
"owner": "0x000000000000000000000000000000000000dEaD",
"tokenId": "1",
"contract": "0x6325439389E0797Ab35752B4F43a14C004f22A9c",
"imageUrl": "https://nft2-cdn.alchemy.com/arb-mainnet/3d0860c551f1b0f62897a545d67cb4b6",
"metadata": {
"name": "Smol #1",
"owners": [
{
"address": "0x000000000000000000000000000000000000dead",
"quantity": 1,
"quantity_string": "1"
}
],
"rarity": {
"rank": 8938,
"strategy_id": "openrarity",
"strategy_version": "1.0"
},
"traits": [
{
"value": "588",
"max_value": null,
"trait_type": "IQ",
"display_type": "NUMBER"
},
{
"value": "cap-purple",
"max_value": null,
"trait_type": "Hat",
"display_type": null
},
{
"value": "brown",
"max_value": null,
"trait_type": "Body",
"display_type": null
},
{
"value": "none",
"max_value": null,
"trait_type": "Hair",
"display_type": null
},
{
"value": "mask",
"max_value": null,
"trait_type": "Mouth",
"display_type": null
}
],
"creator": "",
"is_nsfw": false,
"contract": "0x6325439389e0797ab35752b4f43a14c004f22a9c",
"decimals": null,
"image_url": "https://i2c.seadn.io/arbitrum/0x6325439389e0797ab35752b4f43a14c004f22a9c/c4ef3f615ef67f7b3939579cc01600/3bc4ef3f615ef67f7b3939579cc01600.png",
"collection": "smol-brains-legacy",
"identifier": "1",
"updated_at": "2026-08-19T04:00:39.243479",
"description": "Smol Brains",
"is_disabled": false,
"opensea_url": "https://opensea.io/assets/arbitrum/0x6325439389e0797ab35752b4f43a14c004f22a9c/1",
"metadata_url": "https://trove-api.treasure.lol/tokenuri/arb/smol-brains/1",
"subscription": null,
"agent_binding": null,
"animation_url": null,
"is_suspicious": false,
"token_standard": "erc721",
"display_image_url": "https://i2c.seadn.io/arbitrum/0x6325439389e0797ab35752b4f43a14c004f22a9c/c4ef3f615ef67f7b3939579cc01600/3bc4ef3f615ef67f7b3939579cc01600.png",
"original_image_url": null,
"estimated_value_usd": null,
"display_animation_url": null,
"original_animation_url": null
},
"standard": "ERC-721",
"tokenUri": "ipfs://QmdomEpvMo5w13APURUhA1CCaEoJH7qrhiAJZv7bGqDuzi/1/5",
"collection": "Smol Brain",
"fetchedFrom": "Alchemy NFT API cache (token URI host unavailable)"
}
}Tags
x402
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