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Synapse API — Arbitrum Token Metadata
x402
Synapse API — Arbitrum 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 2026-09-15).
Fetches on-chain token metadata (name, symbol, decimals, etc.) for a given contract address on the Arbitrum 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 on-chain metadata for the specified Arbitrum token contract, typically including the token name, symbol, decimals, and possibly total supply or other ERC-20 standard fields stored on-chain.
Example use cases
DeFi dashboard token enrichment
“I have a list of Arbitrum contract addresses from my DeFi portfolio — can you fetch the token name, symbol, and decimals for 0xFF970A61A04b1cA14834A43f5dE4533eBDDB5CC8 so I can display it properly in my dashboard?”
Verify unfamiliar contract token identity
“Someone sent me tokens to my Arbitrum wallet from contract 0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9 — what token is that? Can you pull the metadata so I know what I'm holding?”
Smart contract integration metadata check
“Before I integrate this Arbitrum token contract at 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1 into my app, can you fetch its on-chain metadata like the name, symbol, and number of decimals?”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/arbitrum/token/metadataWhen to prefer
Use this endpoint when you specifically need on-chain token metadata from the Arbitrum network and want a pay-per-call model without managing RPC infrastructure. Prefer this over raw RPC calls when you need a simple, hosted, pay-as-you-go solution for Arbitrum token lookups.
Side effects
- Invalid or non-existent contract address returns an error or empty metadata
- Contract exists but is not a token contract (no ERC-20 interface) — may return null fields or an error
- Network or RPC issues causing a timeout
- Payment failure via x402 prevents the call from being processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| contractAddress | string |
Tags
x402
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