# Password Strength & Breach Inspector

> Password Strength & Breach Inspector is a paid API for AI agents from api.aventtech.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-13).

Analyzes a password for character classes, entropy bits, strength verdict, and checks it against Have I Been Pwned breach data using k-anonymity (only a hash prefix is sent, never the raw password).

## Facts

- Endpoint: GET https://api.aventtech.com/inspect/password?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/password-strength-breach-inspector-cc72d1a8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_h7lLDm46h0VfJ8-2pAiGu

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-breach-inspector-cc72d1a8
```

Example prompt: Can you check the password 'Sunrise$2024!' — tell me how strong it is, what entropy it has, and whether it's ever shown up in a known data breach?

## When to prefer this

Choose this endpoint when you need a combined password strength analysis AND breach exposure check in a single call, with privacy guaranteed via k-anonymity (the raw password is never transmitted to third parties). Prefer this over manual entropy calculations or separate HIBP queries when you need a structured verdict with entropy bits and character class detail in one response.

## Known failure modes

- Password exceeds 200 character limit — request rejected
- Empty or missing password parameter — validation error returned
- Have I Been Pwned API unavailable — breach count may be absent or endpoint returns partial results
- Network timeout contacting HIBP k-anonymity range endpoint

## How this service works

Password strength and breach inspection: character classes, entropy bits, verdict, and Have-I-Been-Pwned breach count via k-anonymity (only a truncated hash prefix leaves the server; the password is never stored or logged).

## Output

Returns a breakdown of the password's character classes (lowercase, uppercase, digits, symbols), entropy in bits, an overall strength verdict (e.g. weak/moderate/strong), and the number of times the password has appeared in known breach datasets — retrieved safely using k-anonymity so only a truncated SHA-1 hash prefix leaves the client.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "password"
     ],
     "properties": {
      "password": {
       "type": "string",
       "description": "Password to inspect, max 200 chars"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/password-strength-breach-inspector-cc72d1a8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.aventtech.com](https://www.zero.xyz/host/api.aventtech.com/llms.txt)