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Synapse API — Metis Token Balances
x402
Synapse API — Metis 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).
Fetches ERC-20 and native token balances for a given wallet address, optionally filtered by specific contract addresses, on the Metis 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 associated with the given wallet address on the Metis network, including token contract addresses and corresponding amounts held, optionally scoped to specified contract addresses.
Example use cases
Portfolio snapshot for DeFi user
“What ERC-20 token balances does the wallet 0xAbCd...1234 have on Metis right now? I want to see everything it holds.”
Verify token receipt after transfer
“I just sent some tokens to 0xBeeF...5678 on Metis — can you confirm the balance for contract 0xToken...9999 to make sure the transfer went through?”
Monitor multi-token wallet positions
“Check the balances for wallet 0xDeFi...4321 on Metis for these three token contracts: 0xAAA..., 0xBBB..., and 0xCCC... — I want to track my positions.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/metis/token/balancesWhen to prefer
Use this endpoint when you specifically need token balance data on the Metis blockchain network. It is ideal for DeFi portfolio tracking, post-transfer verification, and multi-token position monitoring on Metis. Prefer this over general multi-chain endpoints when Metis-specific balance resolution is required, and when you need to optionally filter by specific contract addresses.
Side effects
- Invalid or malformed owner address returns an error or empty result
- Unrecognized or non-existent contract addresses yield zero balances or errors
- Network downtime on Metis may cause lookup failures
- Rate limiting or payment failure via x402 protocol blocks the request
- Wallet with no token holdings returns an empty balance list
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| owner | string | |
| contractAddresses | array |
Tags
x402
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