# HALOWERK Baumarkt Construction Materials Literal Index

> HALOWERK Baumarkt Construction Materials 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 2026-10-24).

Returns a literal index of construction materials in the hardware/building-supply (Baumarkt) domain, structured as JSON

## Facts

- Endpoint: POST https://medien.halowerk.com/v1/baumarkt/media/construction-materials-literal-index?utm_source=zero.xyz
- Price: $0.031/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-baumarkt-construction-materials-literal-index-5ff6424d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YNw2KnVNU7rwONELzZV_h

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-construction-materials-literal-index-5ff6424d -d '<json body>'
```

Example prompt: Can you pull up the full literal index of construction materials from the HALOWERK Baumarkt catalog — I need the exact names and categories listed there in structured JSON?

## When to prefer this

Choose this endpoint when you need a literal, canonical index of construction materials — exact names as catalogued — rather than semantic search or price lookups. Best suited for data normalization, inventory matching, or building a reference dataset of hardware/building-supply material names.

## Known failure modes

- Payment failure: x402 payment not provided or insufficient USDC balance on Base Mainnet
- Invalid request body: malformed POST payload returns error JSON
- Empty result: no materials matched for a highly specific or unsupported query
- Service unavailable: upstream HALOWERK medienwerk service temporarily offline

## How this service works

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

## Output

A JSON object containing a structured literal index of construction materials, including canonical material names and categories as listed in the HALOWERK Baumarkt media dataset, priced at $0.031 USDC per call on Base Mainnet via x402.

## 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
  },
  "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-baumarkt-construction-materials-literal-index-5ff6424d/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)