# HALOWERK Clinical Medication Literals Snapshot Compare

> HALOWERK Clinical Medication Literals 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 timestamped source searches for clinical medication literal terms against a bounded snapshot, returning matched passages with exact vocabulary only.

## Facts

- Endpoint: POST https://medien.halowerk.com/v1/baumarkt/media/clinical-medication-literals-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-clinical-medication-literals-snapshot-compare-2f8c6609
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__KbDF2XYFVEBlKRKp4b3M

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-clinical-medication-literals-snapshot-compare-2f8c6609 -d '<json body>'
```

Example prompt: Compare medication literal terms like 'metformin' and 'insulin glargine' across two clinical source snapshots and show me all timestamped passages where those exact strings appear in each version.

## When to prefer this

Choose this endpoint when you need exact, literal string matching of clinical medication terminology across two specific timestamped source snapshots — not semantic or synonym-based search. Ideal for compliance audits, pharmacovigilance diffs, and regulatory documentation checks where precise vocabulary matching is required.

## Known failure modes

- No matches found if literal terms are not present in either snapshot
- Invalid snapshot reference returns an error
- Malformed literal keyword list causes request rejection
- Rate limiting or payment failure if x402 USDC transaction is not completed
- Empty result set if time bounds exclude relevant content

## How this service works

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

## Output

Returns a structured JSON response containing timestamped passage matches for the specified clinical medication literal terms found in each snapshot, along with comparison data showing differences or commonalities between the two bounded source sets.

## 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-clinical-medication-literals-snapshot-compare-2f8c6609/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)