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Synapse API — Kaia NFT Metadata Lookup
x402
Synapse API — Kaia 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 2026-09-13).
Fetches NFT metadata for a given token ID and contract address on the Kaia 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 Kaia blockchain, typically including the token name, description, image URL, external URL, and an array of trait attributes (trait_type and value pairs).
Example use cases
NFT Trait Verification for Marketplace
“What are the attributes and rarity traits for token ID 101 from the Kaia NFT contract 0xabc123def456 — I need to verify the metadata before listing it on a marketplace.”
Display NFT Details in Wallet App
“Pull the metadata for Kaia NFT token 7 at contract address 0x9988776655aabb so I can show the image, name, and description in the wallet dashboard.”
Cross-Check NFT Provenance
“Fetch the on-chain metadata for token ID 300 from Kaia contract 0xdeadbeefcafe1234 — I want to confirm the original creator and collection info listed in the metadata.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/kaia/nft/metadataWhen to prefer
Use this endpoint when you specifically need NFT metadata from the Kaia blockchain (formerly Klaytn) and want a pay-per-call, low-overhead solution without managing your own RPC infrastructure. Prefer this over generic NFT APIs when working within the Kaia ecosystem.
Side effects
- Invalid or non-existent contract address returns an error or empty response
- Token ID not found on the specified contract returns null or 404-equivalent
- Kaia network RPC unavailability causes timeouts
- Malformed contract address format causes request rejection
- Token ID out of range or not yet minted returns an error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tokenId | string | |
| contractAddress | string |
Tags
x402
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