# Synapse API — Superseed Token Balances

> Synapse API — Superseed 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).

Returns token balances for a given wallet address on the Superseed blockchain network, optionally filtered by specific token contract addresses.

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/superseed/token/balances
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-superseed-token-balances-f3ca5dea
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Jxd5WVPjeN06IzQqb-NdM

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability synapse-api-superseed-token-balances-f3ca5dea -d '<json body>'
```

Example prompt: Check all the token balances for wallet 0xAbC...123 on Superseed, and specifically look up the balances for these contracts: 0xToken1... and 0xToken2...

## When to prefer this

Use this endpoint when you need token balance data specifically on the Superseed blockchain network. It is purpose-built for Superseed and supports multi-token lookup by contract address in a single call, making it more efficient than general-purpose block explorers when you already know which contracts to query.

## Known failure modes

- Invalid or malformed wallet address returns an error or empty result
- Contract addresses not deployed on Superseed return zero balances or not-found errors
- Network timeouts or RPC failures for the Superseed chain
- Empty contractAddresses array may return all tokens or fail depending on implementation
- Non-checksummed Ethereum addresses may cause lookup failures

## 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

An array or map of token balances associated with the given wallet address on the Superseed blockchain, optionally scoped to the specified contract addresses. Each entry typically includes the contract address and the corresponding balance amount.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "owner": {
   "type": "string"
  },
  "contractAddresses": {
   "type": "array",
   "items": {
    "type": "string"
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synapse-api-superseed-token-balances-f3ca5dea/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from synapse-api-brown.vercel.app](https://www.zero.xyz/host/synapse-api-brown.vercel.app/llms.txt)