# Synapse API — Ink Network Token Metadata Lookup

> Synapse API — Ink Network 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 2026-09-15).

Fetches on-chain token metadata (name, symbol, decimals, etc.) for a given contract address on the Ink blockchain network.

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/ink/token/metadata
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-ink-network-token-metadata-lookup-34df23b5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rYutiniYKqWVr2UkYbbnV

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-ink-network-token-metadata-lookup-34df23b5 -d '<json body>'
```

Example prompt: Can you look up the token metadata — name, symbol, and decimals — for the contract address 0xabc123... on the Ink blockchain network?

## When to prefer this

Choose this endpoint when you specifically need token metadata from the Ink blockchain network and want a pay-per-call model with no subscription. It is ideal for agents that need on-demand, low-cost token lookups on Ink without committing to a monthly API plan. Prefer alternatives if you need metadata across many chains simultaneously or need historical token data rather than current on-chain state.

## Known failure modes

- Invalid or malformed contract address returns an error or empty result
- Contract address exists but is not a token contract (e.g. a multisig or proxy) may return null fields
- Ink network RPC unavailability causes timeout or 5xx error
- Payment failure via x402 protocol blocks the request before execution
- Contract address on a different chain (not Ink) returns no data or incorrect metadata

## 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 Ink network contract address, typically including the token name, symbol, decimal precision, and potentially other contract-level metadata fields derived from the deployed ERC-20 or similar token standard.

## 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-ink-network-token-metadata-lookup-34df23b5/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)