# Zapper Transaction Details

> Zapper Transaction Details is a paid API for AI agents from public.zapper.xyz, paid per call via x402, $0.001125/call, status down (last checked 2026-09-16).

Retrieves detailed information about a specific on-chain transaction using Zapper's x402 API.

## Facts

- Endpoint: POST https://public.zapper.xyz/x402/transaction-details
- Price: $0.001125/call
- Payment: x402
- Status: down
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/public-zapper-xyz-04ba97c8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RtujfvKvngiQNx4WsA7P5

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 public-zapper-xyz-04ba97c8 -d '<json body>'
```

Example prompt: Can you pull up the full details for Ethereum transaction 0x4a3b...c9f2 — I want to see what token transfers happened, which contracts were called, and whether it succeeded?

## When to prefer this

Use this endpoint when you need rich, decoded details about a specific on-chain transaction — including DeFi app context, token flows, and contract interactions — rather than raw RPC data. Ideal when you need Zapper's enriched interpretation (e.g. recognizing a Uniswap swap or Aave deposit) rather than just raw blockchain data.

## Known failure modes

- Invalid or malformed transaction hash returns an error
- Transaction hash not found on the specified network
- Unsupported network returns an error
- Payment failure due to insufficient USDC balance for x402 micropayment
- Rate limiting or timeout on heavy transaction decoding

## How this service works

Enterprise grade onchain data across 60+ chains - token prices, NFTs, portfolios, onchain search, Farcaster and more.

## Output

Returns structured details about an on-chain transaction, including token transfers, contract interactions, gas usage, transaction status, involved addresses, and decoded event logs.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "hash": {
   "type": "string",
   "description": "The transaction hash (0x...)"
  },
  "chainId": {
   "type": "integer",
   "description": "The Chain ID where the transaction occurred"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/public-zapper-xyz-04ba97c8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from public.zapper.xyz](https://www.zero.xyz/host/public.zapper.xyz/llms.txt)