# Synapse API — Avalanche Token Metadata

> Synapse API — Avalanche Token Metadata 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 2026-10-14).

Retrieves on-chain metadata for a token contract deployed on the Avalanche blockchain network

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/avalanche/token/metadata?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-avalanche-token-metadata-b8edf8b4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YKMcn0Bok1nmyG2xDo1df

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-avalanche-token-metadata-b8edf8b4 -d '<json body>'
```

Example prompt: Can you look up the token metadata for the Avalanche contract at address 0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E — I need the name, symbol, and decimals.

## When to prefer this

Choose this endpoint when you need fast, pay-per-call token metadata lookups on the Avalanche network without managing your own RPC infrastructure. It is ideal for agents that encounter unknown Avalanche contract addresses and need to identify the token (name, symbol, decimals) in real time. Prefer this over self-hosted solutions when low operational overhead and per-call pricing are priorities.

## Known failure modes

- Invalid or malformed contract address returns an error
- Contract address exists but is not a standard token contract (no metadata methods), leading to empty or error response
- Network congestion or RPC node issues may cause timeouts
- Non-Avalanche contract addresses will not resolve correctly on this endpoint
- Rate limiting or payment failure (x402) if USDC balance is insufficient

## 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 token metadata for the specified Avalanche contract address, typically including the token name, symbol, number of decimals, and potentially additional ERC-20 or ERC-721 metadata fields stored on the 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-avalanche-token-metadata-b8edf8b4/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)