# Case Study Email and Phone Pattern Masking

> Case Study Email and Phone Pattern Masking is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-19).

Masks email addresses and phone numbers in case study documents using deterministic pattern matching, returning sanitized Markdown or plain text.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-writing-case-study-contact-mask?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/case-study-email-and-phone-pattern-masking-c8ff4327
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lOejYBK9I-DPAwE0d6eLB

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 case-study-email-and-phone-pattern-masking-c8ff4327 -d '<json body>'
```

Example prompt: Mask all email addresses and phone numbers in this case study document for me: [paste your Markdown or plain text case study here, up to 20,000 characters].

## When to prefer this

Choose this endpoint when you need fast, deterministic, rule-based masking of email and phone patterns in case study documents specifically. It is not a generative AI service, so output is consistent and reproducible. Prefer this over general-purpose LLM redaction when you need guaranteed pattern-level determinism and low cost ($0.01 USDC per call) for repeated processing of case study-format content.

## Known failure modes

- Input text exceeds 20,000 character limit — request will be rejected
- Non-text or binary content submitted — cannot process
- Unusual or obfuscated contact formats may not be detected by pattern matching
- Empty or missing text field returns empty or default response

## How this service works

Case study - Email and phone pattern masking: Email and phone pattern masking for Case study. Supplied Markdown or plain text, up to 20,000 characters. Deterministic processing and document templates; no generative prose or fact checking. One of 25 profiles or calculations across 20 shared operations in this sector. 0.01 USDC includes one bounded email and phone pattern masking deliverable.

## Output

Returns the input Markdown or plain text with all email addresses and phone numbers replaced by masked/redacted patterns, preserving the rest of the document structure and content intact. Processing is deterministic — the same input always yields the same masked output.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "default": "## Challenge\nExample 1 content.\nTODO: review the supplied document by 2026-10-10.\n\n## Solution\nExample 2 content.\nTODO: review the supplied document by 2026-10-10.\n\n## Results\nExample 3 content.\nTODO: review the supplied document by 2026-10-10.",
   "maxLength": 20000
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/case-study-email-and-phone-pattern-masking-c8ff4327/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)