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Synapse API — Citrea Token Balances
x402
Synapse API — Citrea 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 2026-09-13).
Fetches ERC-20 token balances for a given wallet address on the Citrea blockchain network, optionally filtered by specific contract addresses.
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 ERC-20 token balances associated with the provided owner address on the Citrea network, including token contract addresses and their corresponding balance amounts. If specific contract addresses are provided, results are filtered to those tokens only.
Example use cases
DeFi portfolio snapshot on Citrea
“Can you pull all the token balances for my Citrea wallet 0xAbC123...? I want to see everything I'm holding on the Citrea network.”
Check specific token holding before swap
“Before I make a trade, check if wallet 0xAbC123... has any balance in the token at contract 0xDef456... on Citrea.”
Audit multi-token holdings for reporting
“I need to audit the Citrea holdings for address 0xAbC123... — specifically look up balances for these three contracts: 0xDef456..., 0xGhi789..., and 0xJkl012.... What does each one show?”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/citrea/token/balancesWhen to prefer
Use this endpoint when you specifically need token balance data on the Citrea network (Bitcoin ZK-rollup). It is pay-per-call via x402 USDC micropayments, making it suitable for on-demand balance lookups without subscription overhead. Prefer this over general multi-chain balance APIs when Citrea is the target network and you need lightweight, fast balance queries.
Side effects
- Invalid or malformed owner wallet address returns an error or empty result
- Contract addresses array contains invalid addresses, leading to partial or no results
- Citrea network RPC unavailability causes timeout or service error
- Address with no token holdings returns an empty balances array
- Rate limiting or payment failure (x402) prevents the call from completing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| owner | string | |
| contractAddresses | array |
Tags
x402
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