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Synapse API — BNB Chain NFT Metadata Lookup
x402
Synapse API — BNB Chain NFT Metadata Lookup is a paid API for AI agents from synapse-api-brown.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Retrieves NFT metadata (name, description, image, attributes) for a given token ID and contract address on the BNB Smart Chain network
Price / call$0.01
Success—
StatusUnknown
How this service works
High-speed API suite for AI processing, web scraping, and smart data utilities across 57+ blockchain networks. Pay-per-call via x402.
Output
Returns structured NFT metadata for the specified token on BNB Smart Chain, typically including the token name, description, image URL, external URL, and a list of trait/attribute key-value pairs as stored in the token URI or on-chain metadata.
Example use cases
NFT portfolio trait inspection
“I own token ID 5 from the contract 0x7dE3085b3190B3a787822Ee16F23be010f5F868 on BNB chain — can you fetch its metadata so I can see all the attributes and the image?”
NFT marketplace listing enrichment
“I need the full metadata for token ID 200 at contract address 0x1A2b3C4d5E6f on BNB Smart Chain so I can display the name, description, and image on my marketplace listing.”
Rarity and trait research
“Look up the traits for token ID 888 from BNB contract 0xDeAdBeEf000000000000000000000000DeAdBeEf — I want to know what attributes it has to check its rarity.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/bnb/nft/metadataWhen to prefer
Choose this endpoint when you specifically need NFT metadata from the BNB Smart Chain (BSC) network and want a pay-per-call, no-subscription approach via x402. It is ideal for agents that need to enrich NFT data on demand without maintaining their own BNB node or indexer.
Side effects
- Invalid or non-existent contract address returns an error or empty response
- Token ID does not exist on the contract, resulting in a not-found or revert error
- Contract is not an NFT (ERC-721/BEP-721) standard, causing metadata fetch failure
- Token URI points to an unreachable or offline metadata server
- Payment not received or insufficient USDC balance causes 402 rejection
- Rate limiting or network congestion on BNB chain may delay or fail the response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tokenId | string | |
| contractAddress | string |
Tags
x402
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