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Synapse API — Sonic NFT Metadata Lookup
x402
Synapse API — Sonic 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 for a given token ID and contract address on the Sonic 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 NFT metadata for the specified token on the Sonic network, typically including token name, description, image URL, and attribute/trait arrays as defined by the NFT contract's metadata standard.
Example use cases
NFT portfolio trait inspection
“Fetch the metadata for token ID 88 at contract 0x1a2b3c4d5e on Sonic — I want to check what traits and rarity attributes it has.”
NFT marketplace listing enrichment
“I'm listing an NFT for sale and need the full metadata for token ID 7 from contract 0xDeAdBeEf on Sonic so I can populate the name, image, and description fields.”
NFT ownership verification display
“Get me the metadata for token 500 at Sonic contract 0x9f8e7d6c so I can display the NFT image and attributes on the owner's profile page.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/sonic/nft/metadataWhen to prefer
Use this endpoint when you specifically need NFT metadata from the Sonic blockchain network and want a simple pay-per-call API without managing your own RPC nodes. Prefer this over general-purpose blockchain RPC calls when you want a clean abstraction that returns structured NFT metadata directly.
Side effects
- Invalid or non-existent contract address returns an error or empty response
- Token ID not found within the contract returns a not-found error
- Sonic network connectivity issues may cause timeouts
- Malformed input (non-string tokenId or contractAddress) may cause validation errors
- Contract does not implement standard metadata URI may return incomplete data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tokenId | string | |
| contractAddress | string |
Tags
x402
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