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Synapse API — Worldchain NFT Metadata Lookup
x402
Synapse API — Worldchain 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 2026-09-15).
Fetches NFT metadata for a given token ID and contract address on the Worldchain 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 structured NFT metadata for the specified token on Worldchain, typically including the token name, description, image URL, external URL, and an array of trait/attribute key-value pairs as stored on-chain or via the token URI.
Example use cases
NFT trait lookup for rarity analysis
“I need the full metadata for token ID 1337 from the Worldchain NFT contract 0xabc123... — can you get me its traits and attributes so I can check its rarity?”
NFT gallery display info retrieval
“Fetch the name, description, and image URL for token ID 7 from the Worldchain contract at 0xdeadbeef... so I can display it in my NFT gallery.”
NFT ownership verification enrichment
“I have a Worldchain NFT — contract 0x999fff..., token ID 500 — can you grab its metadata to confirm what this token actually is before I list it for sale?”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/worldchain/nft/metadataWhen to prefer
Use this endpoint when you specifically need NFT metadata from the Worldchain network and want a pay-per-call model with no subscription overhead. Prefer this over general-purpose blockchain explorers when Worldchain-specific lookups are needed and cost-per-call via USDC micropayments (x402) is acceptable.
Side effects
- Invalid or non-existent contract address returns an error or empty response
- Token ID does not exist on the contract — returns not found or null metadata
- Worldchain RPC/node unavailability causes timeout or 500 error
- Malformed contract address format causes validation error
- Payment failure via x402 protocol results in 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tokenId | string | |
| contractAddress | string |
Tags
x402
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