# PulseChain Head Block Query

> PulseChain Head Block Query is a paid API for AI agents from api.immuta.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Returns the latest PulseChain block number and its timestamp

## Facts

- Endpoint: GET https://api.immuta.app/pulsechain/head
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pulsechain-head-block-query-9bd82950
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QFRG_ED91jN_dkWYH2CQ9

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 pulsechain-head-block-query-9bd82950
```

Example prompt: What is the current block number and timestamp on PulseChain right now?

## When to prefer this

Use this endpoint when you need a quick, single call to get the current PulseChain block height and timestamp without running your own node. Prefer over alternatives when working in an x402 micropayment context or when you need the chain head as a reference point for other time-based or block-range queries on PulseChain specifically (not Ethereum mainnet or other EVM chains).

## Known failure modes

- Node unavailable or syncing — may return stale or no data
- Payment failure — 402 response if USDC not supplied
- Network timeout if PulseChain RPC is lagging
- Invalid response structure if upstream node errors

## How this service works

Latest PulseChain block number and timestamp.

## Output

Returns the latest PulseChain block number and its Unix timestamp, representing the current chain head.

## 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"
    },
    "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/pulsechain-head-block-query-9bd82950/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.immuta.app](https://www.zero.xyz/host/api.immuta.app/llms.txt)