# PulseScanner Head Block Transactions

> PulseScanner Head Block Transactions is a paid API for AI agents from x402.pulsescanner.io, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-22).

Returns all transactions in a specified block ahead of the current indexed head on PulseChain (chain id 369)

## Facts

- Endpoint: GET https://x402.pulsescanner.io/v2/head/blocks/:num/txs?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pulsescanner-head-block-transactions-af8a4b48
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ASGq8ICKsAH5YQDjfnaT0

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 pulsescanner-head-block-transactions-af8a4b48
```

Example prompt: Can you pull all the transactions in PulseChain block number 21500000 — it should be one of the blocks ahead of the current indexed head?

## When to prefer this

Use this endpoint when you need the full transaction list for a specific block near the chain head on PulseChain (chain id 369), particularly blocks in the head-lane that are ahead of the indexed head. Prefer this over general block explorers when you need programmatic, pay-per-call access to near-real-time PulseChain block data without setting up your own node.

## Known failure modes

- Block number not yet indexed or too far ahead of current head — returns empty or error
- Invalid block number format — returns 400 bad request
- Block does not exist on PulseChain — returns 404 or empty result
- Payment not processed — returns 402 Payment Required
- Rate limiting or quota exceeded — returns 429

## How this service works

Transactions in one head-lane block, ahead of the indexed head. PulseChain (chain id 369). $0.003 USDC per call.

## Output

A list of transactions contained in the specified block ahead of the indexed head on PulseChain (chain id 369), including transaction-level details such as hashes, senders, recipients, values, and other on-chain fields for each transaction in that block.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "pathParams": {
     "type": "object",
     "required": [
      "num"
     ],
     "properties": {
      "num": {
       "type": "string"
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pulsescanner-head-block-transactions-af8a4b48/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.pulsescanner.io](https://www.zero.xyz/host/x402.pulsescanner.io/llms.txt)