# HALOWERK buerowerk – Baumarkt Mail Quoted Local Review

> HALOWERK buerowerk – Baumarkt Mail Quoted Local Review is a paid API for AI agents from buero.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-22).

Validates whether a list of email addresses have syntactically correct quoted local parts (the portion before the @ symbol) per RFC standards

## Facts

- Endpoint: POST https://buero.halowerk.com/v1/baumarkt/mail/quoted-local-review?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-buerowerk-baumarkt-mail-quoted-local-review-1149dd35
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4ZdM5KYtH8vftPMAfH7PQ

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-buerowerk-baumarkt-mail-quoted-local-review-1149dd35 -d '<json body>'
```

Example prompt: Can you check this list of email addresses and tell me which ones have valid quoted local parts — I need to validate: ["\"john.doe\"@example.com", "\"test user\"@domain.com", "plain@domain.com"]?

## When to prefer this

Choose this endpoint when you specifically need to validate the quoted local part of email addresses (e.g. addresses with special characters or spaces enclosed in quotes before the @), rather than simple syntax or deliverability checks. Useful for RFC 5321/5322 compliance auditing or accepting non-standard but technically valid email formats.

## Known failure modes

- Empty email array returns validation error
- Email strings exceeding 320 characters are rejected
- Array with more than 500 items exceeds maxItems limit
- Malformed JSON body returns 400 error
- Payment not provided or insufficient USDC triggers x402 payment required response

## How this service works

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

## Output

Returns a JSON object containing the review results for each submitted email address, indicating whether the local part (the section before @) is a valid quoted local form per RFC standards, along with per-address detail or status flags.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "emails": {
   "type": "array",
   "items": {
    "type": "string",
    "maxLength": 320,
    "minLength": 1
   },
   "maxItems": 500,
   "minItems": 1
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-buerowerk-baumarkt-mail-quoted-local-review-1149dd35/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from buero.halowerk.com](https://www.zero.xyz/host/buero.halowerk.com/llms.txt)