# HALOWERK medienwerk — Events/Catering Index Snapshot Compare (Literal)

> HALOWERK medienwerk — Events/Catering Index Snapshot Compare (Literal) is a paid API for AI agents from medien.halowerk.com, paid per call via x402, $0.031/call, status unknown (last checked 2026-10-14).

Compares two snapshots of an events-and-catering media index using literal (exact vocabulary) matching to detect changes between them.

## Facts

- Endpoint: POST https://medien.halowerk.com/v1/baumarkt/media/events-catering-literal-index/snapshot-compare?utm_source=zero.xyz
- Price: $0.031/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-medienwerk-events-catering-index-snapshot-compare-literal-b2b259e7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YefjNheJszEMs_CPrlNgw

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-events-catering-index-snapshot-compare-literal-b2b259e7 -d '<json body>'
```

Example prompt: Compare these two snapshots of the events-and-catering index — the one from last Monday and the one from today — and tell me exactly which literal terms or entries have been added, removed, or changed between them.

## When to prefer this

Choose this endpoint when you need exact, literal-vocabulary comparison between two captured states of an events-and-catering media index — particularly for publication planning audits where fuzzy or semantic matching would miss precise terminology changes. Prefer over generic document-diff tools when the domain is specifically events/catering index content and you need reproducible, vocabulary-exact results.

## Known failure modes

- Missing or malformed snapshot inputs — returns error indicating required documents not supplied
- Unsupported document format — returns error if input cannot be parsed
- Timeout on large index documents — may return partial results or timeout error
- Payment not fulfilled (x402) — returns 402 Payment Required before processing
- Network fetch failure if snapshot provided as URL — returns fetch error

## How this service works

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

## Output

A JSON object containing a structured diff of the two index snapshots, highlighting literal-vocabulary additions, removals, and changes in events-and-catering entries, with exact textual matches and positions noted.

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-medienwerk-events-catering-index-snapshot-compare-literal-b2b259e7/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)