# Password Strength Analyzer

> Password Strength Analyzer is a paid API for AI agents from api.strale.io, paid per call via x402, $0.0216/call, status unknown (last checked 2026-09-14).

Analyzes password strength including entropy, crack time estimate, character diversity, common password check, and keyboard pattern detection without storing the password

## Facts

- Endpoint: GET https://api.strale.io/x402/password-strength
- Price: $0.0216/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-strale-io-9c6a1c40
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zDeeSSUTu1w54amFUPl_8

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 api-strale-io-9c6a1c40
```

Example prompt: Can you check how strong the password 'Tr0ub4dor&3' is — tell me the entropy, estimated crack time, whether it uses any keyboard patterns, and if it's a commonly known password?

## When to prefer this

Use this endpoint when you need a quick, algorithmic, stateless password strength evaluation with no data retention risk. Ideal for validating user-chosen passwords before storing them, auditing password policies, or providing real-time feedback during account creation. Prefer this over client-side libraries when you need a consistent, server-side calculation with crack-time estimates and keyboard pattern detection.

## Known failure modes

- Missing 'password' query parameter — returns 400 or validation error
- Empty password string — may return zero entropy or error
- Extremely long passwords may hit length limits
- Network timeout on slow connections

## How this service works

Analyze password strength: entropy, crack time estimate, character class diversity, common password check, keyboard pattern detection. Password is NOT stored. Algorithmic.

## Output

Returns a structured analysis of the password including entropy value, estimated crack time, character class breakdown (uppercase, lowercase, digits, symbols), a flag indicating if it matches common passwords, and detection of keyboard patterns like 'qwerty' or '12345'. The password is never stored.

## Example request

```json
{
 "password": "Tr0ub4dor&3"
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "password"
     ],
     "properties": {
      "password": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-strale-io-9c6a1c40/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.strale.io](https://www.zero.xyz/host/api.strale.io/llms.txt)