# data-masker

> data-masker — data-masker. Use this tool when you need to protect sensitive information in text data by detecting and masking personally identifiable information (PII) such as emails, phone numbers, and credit cards. It takes in text input and returns findings along with a masked version of the text, ensuring privacy and security. Ideal for use cases where data privacy is a concern, such as data processing and storage.

Canonical page: https://skillsregistry.net/skills/data-masker  
JSON: https://api.skillsregistry.net/v1/skills/data-masker

## Description

Detects PII in text (emails, phone numbers, SSNs, credit cards, API keys) and returns findings + a masked version of the input. Pure-JS, runs in-Worker. Cortex BUILTIN — no bundle needed.

## Trust

- **Trust score (0–1):** 0.30
- **Verification tier:** unverified
- **Last scanned:** 2026-08-30

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** worker
- **Runtime environment:** api
- **Category:** communication
- **Tags:** pii, privacy, cortex-builtin
- **Updated:** 2026-08-30

## Source

- **Source listing:** Cognium (first-party)

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "data-masker"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/data-masker` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/data-masker/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt