# Synapse API — Katana Token Metadata

> Synapse API — Katana 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 2026-09-16).

Fetches on-chain token metadata for a given contract address on the Katana network

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/katana/token/metadata
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-katana-token-metadata-765aba59
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xa1CaxWyviAvM7o1GWpCM

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-katana-token-metadata-765aba59 -d '<json body>'
```

Example prompt: What are the name, symbol, and decimals for the token at contract address 0xAbCd1234... on the Katana network?

## When to prefer this

Use this endpoint when you need to resolve on-chain token metadata specifically for contracts on the Katana network. Prefer this over generic blockchain explorers when you need a programmatic, pay-per-call API response suitable for agent workflows. It is ideal for DeFi dashboards, wallet applications, or any automation that needs to identify tokens by contract address without scraping block explorer UIs.

## Known failure modes

- Invalid or malformed contract address returns an error
- Contract address exists but is not a token contract — metadata fields may be missing or empty
- Contract not deployed on the Katana network returns a not-found or null response
- Network or RPC timeout causes a service unavailable error
- Missing contractAddress field in request body returns a validation error

## 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 token contract, typically including the token name, symbol, and decimal precision. May also include additional contract-level metadata depending on the 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-katana-token-metadata-765aba59/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)