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Synapse API — Abstract Token Metadata
x402
Synapse API — Abstract Token Metadata 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 2026-10-27).
Fetches on-chain token metadata (name, symbol, decimals, supply, etc.) for a given smart contract address across 57+ blockchain networks
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 on-chain token metadata for the provided contract address, including token name, symbol, number of decimals, total supply, and potentially other contract-level fields, sourced directly from the blockchain.
Example use cases
DeFi dashboard token enrichment
“I have a list of ERC-20 contract addresses from our DeFi dashboard and I need the token name, symbol, and decimals for each one — can you look up 0xdAC17F958D2ee523a2206206994597C13D831ec7 to start?”
Wallet UI token display
“My wallet app just detected an incoming transfer from contract 0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984 — what's the token name and symbol so I can display it correctly to the user?”
Smart contract audit metadata check
“I'm auditing a new token project and need to verify the on-chain metadata for their contract at 0x6B175474E89094C44Da98b954EedeAC495271d0F — what does the contract say its name, symbol, and total supply are?”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/abstract/token/metadata?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to resolve a smart contract address to its token metadata (name, symbol, decimals, supply) across a broad range of blockchain networks without setting up your own RPC connections. Particularly useful for agents enriching token data in DeFi, wallet, or portfolio applications where the contract address is known but human-readable metadata is needed. At $0.01 USDC per call via x402, it is cost-effective for on-demand single-token lookups.
Side effects
- Invalid or malformed contract address returns an error
- Contract address exists but is not a token contract (no ERC-20/ERC-721 interface) may return empty or error
- Unsupported blockchain network may return not-found or unsupported error
- Rate limiting or payment failure via x402 protocol blocks the call
- Network RPC timeouts for specific chains may cause delays or failures
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| contractAddress | string |
Tags
x402
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