# HALOWERK Baumarkt Engineering API Literal Index

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

Performs a literal-vocabulary index search over engineering API documentation passages within a hardware/construction (Baumarkt) media context, returning timestamped or sourced results.

## Facts

- Endpoint: POST https://medien.halowerk.com/v1/baumarkt/media/engineering-api-literal-index?utm_source=zero.xyz
- Price: $0.031/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-baumarkt-engineering-api-literal-index-483735b8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_D4tyIk3mZitDDRxEfBFEi

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-baumarkt-engineering-api-literal-index-483735b8 -d '<json body>'
```

Example prompt: Search the HALOWERK Baumarkt engineering API literal index for the exact term 'Endpunkt-Schema' and return any matching documentation passages.

## When to prefer this

Use this endpoint when you need exact literal vocabulary matching against an engineering API documentation index in the HALOWERK Baumarkt media context, rather than semantic or fuzzy search. Best when you know the precise term or phrase you're looking for and need to verify how it appears in the source documentation.

## Known failure modes

- No matching passages found for the given literal term — returns empty result set
- Query too broad or ambiguous for literal index matching — may return no results
- Invalid or malformed POST body — returns 4xx error
- Payment not provided or insufficient — returns 402 Payment Required
- Index not yet populated for the requested domain — returns empty or error response

## How this service works

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

## Output

Returns a JSON response containing indexed passages from engineering API documentation that match the provided literal vocabulary query, including source references and matched text excerpts.

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-baumarkt-engineering-api-literal-index-483735b8/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)