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Synapse API — opBNB NFT Metadata Lookup
x402
Synapse API — opBNB 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 2026-10-15).
Fetches NFT metadata for a given token ID and contract address on the opBNB blockchain 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 the NFT metadata for the specified token on the opBNB network, typically including the token name, description, image URL, external URL, and an array of trait attributes (trait_type and value pairs), sourced from the token URI stored on-chain.
Example use cases
NFT Portfolio Trait Inspector
“I have an opBNB NFT from contract 0x1234567890abcdef1234567890abcdef12345678 — can you fetch the metadata for token ID 7 so I can see its rarity traits and image?”
NFT Marketplace Listing Enricher
“For my marketplace listing, grab the full metadata for token ID 1001 from opBNB contract address 0xdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef so I can display the name, description, and attributes.”
Verify Ownership Details of opBNB NFT
“Can you retrieve the on-chain metadata for opBNB token ID 333 at contract 0xaabbccddeeff00112233445566778899aabbccdd and tell me what image and attributes are associated with it?”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/opbnb/nft/metadata?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need NFT metadata from the opBNB network (BNB Chain Layer 2). It is ideal for agents enriching NFT portfolio data, powering marketplace listings, or verifying token attributes on opBNB without running your own node. Prefer this over general-purpose blockchain explorers when you need structured metadata in a single pay-per-call API call.
Side effects
- Invalid or non-existent contract address returns an error or empty response
- Token ID not minted yet returns a not-found or null metadata response
- Malformed tokenId or contractAddress input causes a validation error
- opBNB RPC node downtime may cause timeouts or service unavailability
- Off-chain metadata URI (IPFS/HTTP) unreachable results in missing or incomplete metadata
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tokenId | string | |
| contractAddress | string |
Tags
x402
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