# Postandshare Multi-Chain Transaction Lookup

> Postandshare Multi-Chain Transaction Lookup is a paid API for AI agents from api.postandshare.net, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-28).

Fetches on-chain transaction details for a given transaction hash on Base, Ethereum, Arbitrum, or Polygon

## Facts

- Endpoint: GET https://api.postandshare.net/v1/chain/tx?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/postandshare-multi-chain-transaction-lookup-31496e8e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_C7klsZfHgm2se7UUXK16q

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 postandshare-multi-chain-transaction-lookup-31496e8e
```

Example prompt: Can you look up transaction 0x4a3b...c9f2 on the Base network and tell me if it was confirmed and what the details are?

## When to prefer this

Use this endpoint when you need a pay-per-call, no-subscription lookup of EVM transaction data across Base, Ethereum, Arbitrum, or Polygon. It is well-suited for AI agents that need lightweight, on-demand transaction verification without managing RPC infrastructure. Prefer this over running your own node or subscribing to a block explorer API when query volume is low and cost-per-call economics work in your favor.

## Known failure modes

- Invalid or malformed transaction hash returns an error (hash must be 0x-prefixed and 64 hex characters)
- Transaction hash not found on the specified network (hash may belong to a different chain)
- Network parameter invalid or unsupported chain requested
- Payment not provided or insufficient — endpoint requires $0.001 USDC via x402 protocol
- Node or RPC timeout causing delayed or failed response

## How this service works

Agent-callable Solana token launch, for agents that need to create, launch or rug-check a Solana SPL token or meme coin: plan a token launch free, build a complete unsigned create-token transaction (mint + Metaplex metadata + supply + authority revoke) for the caller's own wallet to sign, and audit any existing mint's authorities. Non-custodial — no private key is ever accepted, held or transmitted. Also multi-chain EVM reads (Base, Ethereum, Arbitrum, Polygon) and Nigerian phone/NUBAN/identity reference data, none of which return personal data.

## Output

Returns on-chain transaction details for the specified hash on the requested EVM-compatible network, including transaction status, block number, confirmation data, gas used, and other chain-native metadata.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "hash": {
   "type": "string",
   "description": "0x-prefixed 64-hex transaction hash"
  },
  "network": {
   "enum": [
    "base",
    "ethereum",
    "arbitrum",
    "polygon"
   ],
   "type": "string",
   "description": "Chain to read (default base)"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/postandshare-multi-chain-transaction-lookup-31496e8e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.postandshare.net](https://www.zero.xyz/host/api.postandshare.net/llms.txt)