# NetIntel Breach Check - Password

> NetIntel Breach Check - Password is a paid API for AI agents from netintel.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Checks a given password against known data breach databases and returns a risk score, grade, and breach count

## Facts

- Endpoint: GET https://netintel.dev/breach-check/password
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/netintel-breach-check-password-9e3826cd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3cmut62YD75nCQXjD6Y6A

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 netintel-breach-check-password-9e3826cd
```

Example prompt: Can you check if the password 'Sunshine2023!' has ever shown up in a known data breach — I want to know the risk level and how many times it was exposed?

## When to prefer this

Use this endpoint when you need to programmatically check whether a specific password has appeared in known data breach datasets, get a structured risk grade and score, and need pay-per-call pricing with no subscription. Prefer over manual HIBP queries when you want a machine-readable risk grade and score alongside the breach count.

## Known failure modes

- Missing 'password' query parameter returns validation error
- Empty password string may return 400 bad request
- Payment failure via x402 (insufficient USDC balance) results in 402 Payment Required
- Rate limiting if many calls made rapidly
- Very long passwords may be rejected or truncated

## How this service works

Check if a password has appeared in known data breaches using the HaveIBeenPwned Pwned Passwords API with k-anonymity — the full password is never transmitted, only a 5-character SHA-1 hash prefix — returns breach count and a risk classification so agents can enforce password policies without storing or exposing credentials.

## Output

Returns a JSON object with: breached (boolean), breach_count (number of times seen in breaches), risk_level (e.g. 'critical'), grade (letter grade e.g. 'F'), score (numeric), and findings array with rule names and deduction details explaining the assessment.

## 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 check against known data breaches (1-500 characters; sent as a query param but only a k-anonymity SHA-1 prefix leaves the server)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "grade": {
       "type": "string"
      },
      "score": {
       "type": "number"
      },
      "breached": {
       "type": "boolean"
      },
      "findings": {
       "type": "array"
      },
      "risk_level": {
       "type": "string"
      },
      "breach_count": {
       "type": "number"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "grade": "F",
  "score": 0,
  "breached": true,
  "findings": [
   {
    "rule": "critical_breach",
    "detail": "Password found 34521 times in known data breaches",
    "deduction": -100
   }
  ],
  "risk_level": "critical",
  "breach_count": 34521
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/netintel-breach-check-password-9e3826cd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from netintel.dev](https://www.zero.xyz/host/netintel.dev/llms.txt)