# Password Pattern Validator — REST API endpoint `password-pattern-validator`

Validate a password against configurable rules and return each check (pass/fail with severity), a 0-100 score, and a strength label. Required rules: minimum length plus optional uppercase, lowercase, digit, and special-character requirements. Recommended rules: no common passwords, no keyboard patterns, no 3+ repeated characters, no sequential runs. Also reports an entropy estimate.

- Category: security
- MCP server: https://mcp.findutils.com/ (Streamable HTTP, no API keys, 120 req/min per IP)
- REST endpoint: POST https://api.findutils.com/api/tools/password-pattern-validator/execute (no API keys, 60 req/min per IP)
- Reference page: https://findutils.com/api/password-pattern-validator/
- Same tool on the other surface: https://findutils.com/mcp/password-pattern-validator/

## Call the endpoint (verified example)

```bash
curl -X POST https://api.findutils.com/api/tools/password-pattern-validator/execute \
  -H "Content-Type: application/json" \
  -d '{
    "password": "Xk9#mQ2$vL7@pR4!"
  }'

# Parameter schema
curl https://api.findutils.com/api/tools/password-pattern-validator
```

## Input schema

| Argument | Type | Required | Description |
|---|---|---|---|
| `password` | string | yes | The password to validate. |
| `min_length` | integer | no | Minimum length. Default: 8. Default: `8`. |
| `require_uppercase` | boolean | no | Require at least one uppercase letter. Default: true. Default: `true`. |
| `require_lowercase` | boolean | no | Require at least one lowercase letter. Default: true. Default: `true`. |
| `require_number` | boolean | no | Require at least one digit. Default: true. Default: `true`. |
| `require_special` | boolean | no | Require at least one special character. Default: true. Default: `true`. |

Example arguments (verified):

```json
{
  "password": "Xk9#mQ2$vL7@pR4!"
}
```

OpenAPI 3.1 spec: https://findutils.com/api/openapi.json · Interactive docs: https://findutils.com/api/docs/

## Also an MCP tool

```bash
claude mcp add findutils --transport http https://mcp.findutils.com/
```

Then ask the client to call `findutils:password_pattern_validator`. Full MCP reference: https://findutils.com/mcp/password-pattern-validator/

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