# ZooKeeper Atomic Multi / One-Shot Watch / Ephemeral Session Ledger Verifier

> ZooKeeper Atomic Multi / One-Shot Watch / Ephemeral Session Ledger Verifier is a paid API for AI agents from detect.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-11-04).

Replays and validates ZooKeeper atomic multi-operation sequences, version checks, one-shot watch event firing, and ephemeral node cleanup against a claimed post-state ledger.

## Facts

- Endpoint: POST https://detect.halowerk.com/v1/F-TD2000-DATASTRUCTURES-06/zookeeper39-atomic-multi-oneshot-watch-ephemeral-session-ledger?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-04
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/zookeeper-atomic-multi-one-shot-watch-ephemeral-session-ledger-verifier-e36895ca
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EGH9gHZqKnhRkAMVsQcZb

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 zookeeper-atomic-multi-one-shot-watch-ephemeral-session-ledger-verifier-e36895ca -d '<json body>'
```

Example prompt: Replay this ZooKeeper atomic multi sequence — 12 events across 3 sessions — and check whether the claimed post-state (node versions, one-shot watch firings, and ephemeral cleanup) is correct or if there are any discrepancies.

## When to prefer this

Use this endpoint when you need deterministic, replay-based validation of ZooKeeper atomic multi-operation sequences against a claimed post-state, specifically when verifying one-shot watch semantics, ephemeral node lifecycle, and version/cversion consistency — particularly during cluster migrations, test harness validation, or distributed system correctness audits.

## Known failure modes

- Claimed node state does not match replayed outcome — returns mismatch details
- Malformed event entries in the events array — returns schema validation error
- Version or cversion values inconsistent with event sequence — returns conflict report
- Exceeding maxItems limits on events or nodes arrays — returns payload too large error
- Null claim with non-empty event log — ambiguous validation target

## How this service works

Replay finite ZooKeeper atomic multis, version checks, one-shot watch events and ephemeral cleanup.

## Output

A validation response indicating whether the replayed ZooKeeper atomic multi events, version checks, one-shot watch firings, and ephemeral node cleanup match the claimed post-state ledger; includes per-node and per-event discrepancy details where mismatches are found.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "artifact": {
   "type": "object",
   "$defs": {
    "json": {
     "anyOf": [
      {
       "type": "null"
      },
      {
       "type": "boolean"
      },
      {
       "type": "number"
      },
      {
       "type": "string",
       "maxLength": 6000
      },
      {
       "type": "array",
       "items": {
        "$ref": "#/properties/input/properties/body/properties/artifact/%24defs/json"
       },
       "maxItems": 512
      },
      {
       "type": "object",
       "maxProperties": 128,
       "additionalProperties": {
        "$ref": "#/properties/input/properties/body/properties/artifact/%24defs/json"
       }
      }
     ]
    }
   },
   "required": [
    "zk"
   ],
   "properties": {
    "zk": {
     "type": "object",
     "required": [
      "data",
      "claim"
     ],
     "properties": {
      "data": {
       "type": "object",
       "required": [
        "events",
        "sessions"
       ],
       "properties": {
        "events": {
         "type": "array",
         "items": {
          "$ref": "#/properties/input/properties/body/properties/artifact/%24defs/json"
         },
         "maxItems": 512
        },
        "sessions": {
         "type": "number"
        }
       },
       "additionalProperties": false
      },
      "claim": {
       "anyOf": [
        {
         "type": "null"
        },
        {
         "type": "object",
         "required": [
          "events",
          "nodes",
          "remaining_watches"
         ],
         "properties": {
          "nodes": {
           "type": "array",
           "items": {
            "type": "object",
            "required": [
             "cversion",
             "data",
             "owner",
             "path",
             "version"
            ],
            "properties": {
             "data": {
              "type": "number"
             },
             "path": {
              "type": "string",
              "maxLength": 20000
             },
             "owner": {
              "anyOf": [
               {
                "$ref": "#/properties/input/properties/body/properties/artifact/%24defs/json"
               },
               {
                "type": "number"
               }
              ]
             },
             "version": {
              "type": "number"
             },
             "cversion": {
              "type": "number"
             }
            },
            "additionalProperties": false
     
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/zookeeper-atomic-multi-one-shot-watch-ephemeral-session-ledger-verifier-e36895ca/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from detect.halowerk.com](https://www.zero.xyz/host/detect.halowerk.com/llms.txt)