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Synapse API — Token Metadata Lookup
x402
Synapse API — Token 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 2026-10-16).
Retrieves on-chain metadata for a token given its contract address, supporting 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 given contract address, typically including token name, symbol, number of decimals, and potentially other contract-level details such as total supply or token standard.
Example use cases
Identify unknown token contract
“I found this contract address 0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984 — can you tell me what token it is, its symbol, and how many decimals it uses?”
DeFi portfolio enrichment
“I have a list of ERC-20 contract addresses from my wallet transactions. Can you fetch the token name and symbol for 0x6B175474E89094C44Da98b954EedeAC495271d0F so I can label it properly?”
Validate token before swap
“Before I swap, can you pull the on-chain metadata for contract 0xdAC17F958D2ee523a2206206994597C13D831ec7 so I can confirm it's actually USDT and check the decimals?”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/tempo/token/metadata?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to resolve raw token contract addresses into human-readable metadata (name, symbol, decimals) across a wide range of blockchains. Prefer this over manual chain RPC calls when you need a simple, pay-per-call abstraction supporting 57+ networks without managing your own node infrastructure.
Side effects
- Invalid or malformed contract address returns an error response
- Contract address does not exist on the queried network
- Network unavailable or unsupported chain returns a failure
- Rate limiting or payment failure (x402) blocks the request
- Contract exists but is not a standard token contract, returning partial or empty metadata
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| contractAddress | string |
Tags
x402
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