# HALOWERK buerowerk – Meeting Source-Note Density Snapshot Compare

> HALOWERK buerowerk – Meeting Source-Note Density 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 2026-10-14).

Compares two meeting transcript snapshots to detect changes in note density across structured note categories (summary, topics, decisions, action items, open questions).

## Facts

- Endpoint: POST https://buero.halowerk.com/v1/baumarkt/meeting/source-note-density/snapshot-compare?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-buerowerk-meeting-source-note-density-snapshot-compare-ce36ddaa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hDyXa5lzpzm00pYzNeTfL

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-meeting-source-note-density-snapshot-compare-ce36ddaa -d '<json body>'
```

Example prompt: Compare my original meeting transcript and its notes to the updated version — I want to see how the note density changed across the summary, topics, decisions, action items, and open questions between the two snapshots.

## When to prefer this

Choose this endpoint when you need to quantitatively compare two versions of a meeting's structured notes — for example, after re-transcribing, correcting, or re-processing a meeting with a different pipeline — and want to understand how note density changed category by category. It is ideal for QA workflows that validate note extraction quality or audit transcript corrections. Prefer it over a simple text diff when you need structured, category-aware density metrics rather than raw text changes.

## Known failure modes

- Missing required baseline.source field (must provide either segments or transcript_package): 422 validation error
- Missing required baseline.notes fields (summary is required, must have at least 1 item): 422 validation error
- Malformed segment or transcript_package structure: 400 or 422 error
- Exceeding maxItems (30) on any note array: 422 validation error
- Payment not included or insufficient USDC on Base Mainnet: 402 Payment Required
- Network timeout if transcript packages are very large

## How this service works

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

## Output

A JSON object containing a density comparison between the baseline and comparison meeting snapshots, including per-category metrics (summary, topics, decisions, action items, open questions) showing how note density shifted between the two versions — likely includes counts, deltas, and possibly coverage or richness scores per category.

## 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-meeting-source-note-density-snapshot-compare-ce36ddaa/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)