# HALOWERK buerowerk — Anonymous Owner Review Snapshot Compare

> HALOWERK buerowerk — Anonymous Owner Review Snapshot Compare is a paid API for AI agents from buero.halowerk.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10).

Compares two snapshots of anonymous-owner meeting review notes (baseline notes + new transcript/segments) to surface what has changed between meeting summaries.

## Facts

- Endpoint: POST https://buero.halowerk.com/v1/baumarkt/meeting/anonymous-owner-review/snapshot-compare?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-buerowerk-anonymous-owner-review-snapshot-compare-9041b427
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QJTnH7nKzNCieqCBwLndv

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 halowerk-buerowerk-anonymous-owner-review-snapshot-compare-9041b427 -d '<json body>'
```

Example prompt: Compare my baseline meeting notes — which covered topics like budget approval, three action items assigned to Alice due next Friday, and two open questions — against the new transcript I just uploaded, and tell me what changed in the anonymous owner review snapshot.

## When to prefer this

Choose this endpoint when you need to programmatically compare two versions of anonymous-owner meeting review notes — specifically when you have a structured baseline with notes (summaries, decisions, action items, open questions) and a new transcript or segment set, and want a diff rather than a fresh extraction. Prefer it over single-extraction endpoints when the goal is change detection across sessions.

## Known failure modes

- Missing required baseline notes fields (summary, topics, decisions, action_items, open_questions) returns validation error
- Neither segments nor transcript_package provided in source or top-level input causes schema validation failure
- Summary array empty or missing minItems:1 triggers validation rejection
- Action item text or quote exceeding maxLength causes request rejection
- Payment not fulfilled via x402 protocol results in 402 Payment Required response
- Malformed base64 or unreachable public URL for transcript package causes fetch/parse error

## How this service works

HALOWERK buerowerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.

## Output

A JSON object representing the diff between the baseline meeting notes snapshot and the new transcript/segments, highlighting added, removed, and modified items across summaries, topics, decisions, action items, and open questions.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "baseline": {
   "type": "object",
   "required": [
    "source",
    "notes"
   ],
   "properties": {
    "notes": {
     "type": "object",
     "required": [
      "summary",
      "topics",
      "decisions",
      "action_items",
      "open_questions"
     ],
     "properties": {
      "topics": {
       "type": "array",
       "items": {
        "$ref": "#/$defs/ma5dd9d00ff"
       },
       "maxItems": 30
      },
      "summary": {
       "type": "array",
       "items": {
        "$ref": "#/$defs/ma5dd9d00ff"
       },
       "maxItems": 30,
       "minItems": 1
      },
      "decisions": {
       "type": "array",
       "items": {
        "$ref": "#/$defs/ma5dd9d00ff"
       },
       "maxItems": 30
      },
      "action_items": {
       "type": "array",
       "items": {
        "type": "object",
        "required": [
         "text",
         "quote",
         "segment_index",
         "owner",
         "due_raw"
        ],
        "properties": {
         "text": {
          "type": "string",
          "maxLength": 1000,
          "minLength": 1
         },
         "owner": {
          "type": [
           "string",
           "null"
          ],
          "maxLength": 80
         },
         "quote": {
          "type": "string",
          "maxLength": 3000,
          "minLength": 1
         },
         "due_raw": {
          "type": [
           "string",
           "null"
          ],
          "maxLength": 3000
         },
         "segment_index": {
          "type": "integer",
          "minimum": 0
         }
        }
       },
       "maxItems": 30
      },
      "open_questions": {
       "type": "array",
       "items": {
        "$ref": "#/$defs/ma5dd9d00ff"
       },
       "maxItems": 30
      }
     }
    },
    "source": {
     "type": "object",
     "oneOf": [
      {
       "required": [
        "segments"
       ]
      },
      {
       "required": [
        "transcript_package"
       ]
      }
     ],
     "required": [],
     "properties": {
      "segments": {
       "$ref": "#/$defs/mbdf0d3bb9b"
      },
      "transcript_package": {
       "$ref": "#/$defs/m81f20e3330"
      }
     },
     "additionalProperties": false
    }
   }
  },
  "segments": {
   "$ref": "#/$defs/mbdf0d3bb9b"
  },
  "transcript_package": {
   "$ref": "#/$defs/m81f20e3330"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-buerowerk-anonymous-owner-review-snapshot-compare-9041b427/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from buero.halowerk.com](https://www.zero.xyz/host/buero.halowerk.com/llms.txt)