# Citiview Agent Market - Breached Password Check

> Citiview Agent Market - Breached Password Check is a paid API for AI agents from agents.citiviewgroup.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-14).

Checks SHA-1 hashed passwords against known data breach databases using k-anonymity, returning breach exposure counts

## Facts

- Endpoint: GET https://agents.citiviewgroup.com/v1/password/check?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/citiview-agent-market-breached-password-check-342d8c33
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Lkt46x5eQheTx5GYUgYp-

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 citiview-agent-market-breached-password-check-342d8c33
```

Example prompt: Check if the SHA-1 hash 5BAA61E4C9B93F3F0682250B6CF8331B7EE68FD8 has appeared in any known data breaches and tell me how many times it's been exposed.

## When to prefer this

Choose this endpoint when you need to check password hashes against breach databases without exposing the actual passwords, leveraging k-anonymity for privacy. It supports up to 50 hashes per call making it efficient for batch checks. Prefer this over direct HIBP API access when you want a simple, pay-per-use integration without managing your own API keys, or when building into an agentic workflow that already uses x402 micropayments.

## Known failure modes

- Invalid SHA-1 hash format (not 40 hex characters) causes validation error
- Exceeding 50 hashes per call results in rejection
- Network timeout if HIBP upstream is unavailable
- Malformed comma-separated hash list returns parsing error
- Hash with no breach history returns zero count (not an error)

## How this service works

Breached password check: is this password in known data breaches, and how often? Send only the SHA-1 hash (never the password); just the first 5 characters reach Have I Been Pwned (k-anonymity). Up to 50 hashes per call.

## Output

Returns breach exposure data for each submitted SHA-1 hash, including whether the password has appeared in known data breaches and how many times it has been seen across breach datasets. Uses k-anonymity so only the first 5 characters of each hash are transmitted to the underlying HIBP service.

## 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": [
      "sha1"
     ],
     "properties": {
      "sha1": {
       "type": "string",
       "description": "SHA-1 hash(es), 40 hex each, comma separated"
      }
     }
    }
   },
   "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/citiview-agent-market-breached-password-check-342d8c33/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agents.citiviewgroup.com](https://www.zero.xyz/host/agents.citiviewgroup.com/llms.txt)