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Synapse API — Monad Token Balances
x402
Synapse API — Monad Token Balances 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).
Retrieves token balances for a given wallet address across specified ERC-20/token contract addresses on the Monad 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 a list of token balances for the specified wallet address on the Monad network, including balance amounts for each queried contract address.
Example use cases
DeFi portfolio snapshot on Monad
“Can you pull the token balances for my Monad wallet 0x1234...abcd across these three contract addresses: 0xAAA..., 0xBBB..., and 0xCCC...? I want to see what I'm holding.”
Multi-wallet token audit
“I need to check the balance of the USDC contract at 0xUSDC... on Monad for wallet address 0xClient1... — just tell me how much they're holding.”
Token airdrop eligibility check
“For the Monad wallet 0xRecipient..., can you check their balance for the governance token at contract 0xGovToken... to see if they qualify for our airdrop threshold?”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/monad/token/balancesWhen to prefer
Choose this endpoint when you need to query token balances specifically on the Monad blockchain network for one or more ERC-20/token contracts for a given wallet. It is pay-per-call via x402/USDC micropayment, making it suitable for on-demand agent queries without subscription overhead. Prefer it over generic multi-chain solutions when Monad is specifically required.
Side effects
- Invalid or malformed wallet address returns an error
- Non-existent contract address may return zero balance or an error
- Monad RPC node downtime causes request failure
- Empty contractAddresses array may return empty or error response
- Rate limiting if too many calls are made rapidly
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| owner | string | |
| contractAddresses | array |
Tags
x402
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