# Synapse API — BNB Token Metadata Lookup

> Synapse API — BNB Token Metadata Lookup 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 2026-10-27).

Fetches on-chain metadata for a BNB Chain token given its contract address, including name, symbol, decimals, and supply information.

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/bnb/token/metadata?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-bnb-token-metadata-lookup-4d0625ca
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Lz1A6uaEVrcA4g52_WAf7

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-bnb-token-metadata-lookup-4d0625ca -d '<json body>'
```

Example prompt: What token is deployed at BNB Chain contract address 0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c — give me the name, symbol, and decimals.

## When to prefer this

Use this endpoint when you need fast, pay-per-call token metadata resolution for BNB Chain (BSC) contracts without managing your own RPC node or indexer. It is ideal for agents enriching DeFi data, verifying token identities before transactions, or labeling wallet activity on BNB Chain specifically. Prefer this over generic blockchain explorers when you need programmatic, structured output at low cost.

## Known failure modes

- Invalid or malformed contract address returns an error or empty response
- Contract address exists but is not a BEP-20 token, causing missing or null metadata fields
- Network or RPC node outages on BNB Chain may cause timeouts
- Non-existent contract address returns no metadata
- Contract does not implement standard ERC-20/BEP-20 metadata functions, resulting in incomplete data

## 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 BNB Chain (BSC) token contract, typically including the token name, symbol, number of decimals, and total supply as recorded in the smart contract.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "contractAddress": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synapse-api-bnb-token-metadata-lookup-4d0625ca/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)