# Phantom API — Blockchain Transaction History Lookup

> Phantom API — Blockchain Transaction History Lookup is a paid API for AI agents from phantom-api-omega.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).

Retrieves paginated on-chain transaction history for a given address or address pair across 57+ blockchain networks

## Facts

- Endpoint: POST https://phantom-api-omega.vercel.app/api/adi/tx/history?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/phantom-api-blockchain-transaction-history-lookup-8ee2c54f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bOlbXlEf8TY2NEDWIrS_q

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 phantom-api-blockchain-transaction-history-lookup-8ee2c54f -d '<json body>'
```

Example prompt: Pull the last 50 incoming transactions to wallet 0xABC...123 in descending order, including metadata, and skip zero-value transfers — I want to audit recent token activity on-chain.

## When to prefer this

Choose this endpoint when you need fast, multi-network blockchain transaction history with flexible filtering by address, block range, category, and sort order, especially when paying per-call via x402 is acceptable and you need access to 57+ chains without managing your own node infrastructure.

## Known failure modes

- Invalid address format returns an error
- Unsupported category type causes rejection
- Block range too large may return empty or truncated results
- Missing required address fields may cause a 400 error
- Payment failure (x402) blocks the request
- Invalid pageKey causes pagination errors

## How this service works

Lightning-fast access to blockchain data, smart contract insights, and Web3 infrastructure across 57+ networks. Pay-per-call via x402.

## Output

Returns a paginated list of on-chain transactions matching the specified filters, including transaction hashes, block numbers, sender/receiver addresses, asset categories, values, and optional metadata. A pageKey is returned for fetching subsequent pages.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "order": {
   "enum": [
    "asc",
    "desc"
   ],
   "type": "string"
  },
  "pageKey": {
   "type": "string"
  },
  "toBlock": {
   "type": "string"
  },
  "category": {
   "type": "array",
   "items": {
    "type": "string"
   }
  },
  "maxCount": {
   "type": "number"
  },
  "fromBlock": {
   "type": "string"
  },
  "toAddress": {
   "type": "string"
  },
  "fromAddress": {
   "type": "string"
  },
  "withMetadata": {
   "type": "boolean"
  },
  "excludeZeroValue": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/phantom-api-blockchain-transaction-history-lookup-8ee2c54f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from phantom-api-omega.vercel.app](https://www.zero.xyz/host/phantom-api-omega.vercel.app/llms.txt)