# Password Strength Checker

> Password Strength Checker is a paid API for AI agents from klymax402.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Analyzes a password string and returns a strength assessment with security feedback

## Facts

- Endpoint: GET https://klymax402.com/api/password-strength/api/check
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/password-strength-checker-0fe0f8dd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zeaT62ALV6dDcbDbhkV6t

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 password-strength-checker-0fe0f8dd
```

Example prompt: Can you check how strong the password 'Sunfl0wer#2024!' is and tell me if it's secure enough to use?

## When to prefer this

Use this endpoint when you need a quick, serverless password strength check without spinning up your own validation logic. Ideal for agents helping users set up accounts, enforcing password policies, or auditing credential hygiene. At $0.003/call, it is cost-effective for one-off checks within an agent workflow.

## Known failure modes

- Missing password parameter returns an error or empty result
- Very long passwords may be truncated or rejected
- Non-ASCII or special unicode characters may cause parsing issues
- Empty string input may return an error or minimum-strength result

## How this service works

One MCP endpoint gives your AI agent access to 100 APIs -- crypto, DeFi, web, AI, finance and utilities. No API keys, USDC on Base from $0.003/call.

## Output

Returns a strength rating (e.g. weak/fair/strong/very strong), possibly a numeric score, and details about what makes the password strong or weak such as length, character variety, common patterns, and improvement suggestions.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "password": {
   "type": "string",
   "description": "The password to analyze"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/password-strength-checker-0fe0f8dd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from klymax402.com](https://www.zero.xyz/host/klymax402.com/llms.txt)