# HALOWERK medienwerk — Engineering Bug Literal Index Snapshot Compare

> HALOWERK medienwerk — Engineering Bug Literal Index Snapshot Compare is a paid API for AI agents from medien.halowerk.com, paid per call via x402, $0.031/call, status unknown (last checked 2026-10-22).

Compares two snapshots of an engineering bug literal index using literal vocabulary matching, returning differences and deltas between the two indexed states.

## Facts

- Endpoint: POST https://medien.halowerk.com/v1/baumarkt/media/engineering-bug-literal-index/snapshot-compare?utm_source=zero.xyz
- Price: $0.031/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-medienwerk-engineering-bug-literal-index-snapshot-compare-793b82f8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Xr6jj9VQ7yZDC8jIkh6yP

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-medienwerk-engineering-bug-literal-index-snapshot-compare-793b82f8 -d '<json body>'
```

Example prompt: Compare the two engineering bug literal index snapshots — snapshot A from last week and snapshot B from today — and tell me what entries were added, removed, or changed between them.

## When to prefer this

Use this endpoint when you need literal-vocabulary-only comparison of two engineering bug index snapshots and want a structured delta report. It is purpose-built for bug index diffing with literal matching rather than semantic or fuzzy comparison, making it ideal for precise regression tracking, audit trails, and release validation workflows on the HALOWERK medienwerk platform.

## Known failure modes

- Missing or invalid snapshot references returns an error indicating which input is unresolvable
- Snapshots that exceed size limits may be rejected with a payload-too-large error
- Malformed base64 or unreachable URLs return a fetch or decode error
- Identical snapshots return an empty diff with zero deltas
- Rate limiting or payment failure via x402 returns a 402 Payment Required response

## How this service works

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

## Output

A JSON response containing the delta between the two provided engineering bug literal index snapshots, including added entries, removed entries, changed literals, and a structured summary of coverage differences.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "source": {
   "type": "object",
   "oneOf": [
    {
     "required": [
      "url"
     ]
    },
    {
     "required": [
      "content_base64"
     ]
    }
   ],
   "properties": {
    "url": {
     "type": "string",
     "pattern": "^https?://",
     "maxLength": 2048
    },
    "filename": {
     "type": "string",
     "maxLength": 260
    },
    "content_base64": {
     "type": "string",
     "maxLength": 12000000,
     "minLength": 4
    }
   },
   "additionalProperties": false
  },
  "baseline": {
   "type": "object",
   "required": [
    "words",
    "media"
   ],
   "properties": {
    "cues": {
     "type": "array",
     "items": {
      "type": "object"
     },
     "maxItems": 20000,
     "minItems": 1
    },
    "media": {
     "type": "object",
     "required": [
      "duration_seconds"
     ],
     "properties": {
      "duration_seconds": {
       "type": "number",
       "maximum": 1800,
       "exclusiveMinimum": 0
      }
     }
    },
    "words": {
     "type": "array",
     "items": {
      "type": "object",
      "required": [
       "word",
       "start",
       "end",
       "speaker"
      ],
      "properties": {
       "end": {
        "type": "number",
        "maximum": 1800.5,
        "exclusiveMinimum": 0
       },
       "word": {
        "type": "string",
        "maxLength": 3000,
        "minLength": 1
       },
       "start": {
        "type": "number",
        "maximum": 1800.5,
        "minimum": 0
       },
       "speaker": {
        "type": [
         "integer",
         "null"
        ],
        "minimum": 0
       },
       "confidence": {
        "type": [
         "number",
         "null"
        ],
        "maximum": 1,
        "minimum": 0
       }
      },
      "additionalProperties": false
     },
     "maxItems": 20000,
     "minItems": 1
    }
   }
  },
  "language": {
   "enum": [
    "de",
    "en",
    "es",
    "fr",
    "it",
    "nl",
    "pt",
    "multi"
   ],
   "type": "string"
  },
  "duration_minutes": {
   "type": "integer",
   "maximum": 30,
   "minimum": 1
  },
  "confidence_threshold": {
   "type": "number",
   "maximum": 1,
   "minimum": 0
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-medienwerk-engineering-bug-literal-index-snapshot-compare-793b82f8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from medien.halowerk.com](https://www.zero.xyz/host/medien.halowerk.com/llms.txt)