# Synapse API — Mantle Token Metadata

> Synapse API — Mantle 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 2026-09-15).

Retrieves metadata (name, symbol, decimals, supply, etc.) for a token contract deployed on the Mantle blockchain network.

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/mantle/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-mantle-token-metadata-7239d3fa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WhPKRv_mgxzSiT-wU74yB

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-mantle-token-metadata-7239d3fa -d '<json body>'
```

Example prompt: Can you look up the token metadata for the contract address 0x78c1b0C915c4FAA5FffA6CAbf0219DA63d7f4cb8 on the Mantle network — I need the name, symbol, and decimals.

## When to prefer this

Use this endpoint when you specifically need token metadata from the Mantle blockchain network and want a pay-per-call model without managing your own RPC node or API key subscription. Prefer it over raw RPC calls when you need a simple REST interface for Mantle token lookups.

## Known failure modes

- Invalid or malformed contract address returns an error response
- Contract address does not exist on Mantle network — returns not-found or empty metadata
- Address is a non-token contract (e.g. a DEX pool or NFT) — metadata fields may be missing or unexpected
- Network timeout or upstream RPC failure — transient error
- Payment not fulfilled via x402 — request rejected with 402 status

## 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 structured token metadata for the given Mantle contract address, typically including the token name, symbol, number of decimal places, and total supply — useful for identifying and displaying ERC-20 tokens on the Mantle network.

## 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-mantle-token-metadata-7239d3fa/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)