# Synapse API — ADI Token Metadata

> Synapse API — ADI 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 2026-10-10).

Fetches on-chain token metadata for a given smart contract address across 57+ blockchain networks

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/adi/token/metadata?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-adi-token-metadata-9863a78a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YuzV424nyVbNmFAjDiN6j

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-adi-token-metadata-9863a78a -d '<json body>'
```

Example prompt: Can you look up the token metadata for the contract address 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum — I want to know its name, symbol, and decimals?

## When to prefer this

Choose this endpoint when you need fast, pay-per-call token metadata resolution without a subscription, especially for lesser-known tokens or when querying across a broad range of 57+ blockchain networks. Prefer it over free public RPC calls when you need a reliable, managed abstraction layer that handles multi-chain routing automatically.

## Known failure modes

- Invalid or malformed contract address returns an error
- Contract address exists but is not a token contract (e.g. a plain wallet or non-token contract)
- Network not supported among the 57+ chains
- Rate limiting or payment failure via x402 protocol
- Contract deployed on a chain not specified or inferred, leading to wrong-chain lookup

## 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 token name, symbol, number of decimals, and other standard ERC-20 or token standard fields stored 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-adi-token-metadata-9863a78a/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)