# HyperD Wallet Behavioral Anomaly Detection

> HyperD Wallet Behavioral Anomaly Detection is a paid API for AI agents from api.hyperd.ai, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-13).

Detects behavioral anomalies in an EVM wallet by comparing recent activity against its own 180-day baseline, surfacing tx-volume spikes, dormant-wakeup patterns, new-protocol interactions, and counterparty diversification.

## Facts

- Endpoint: POST https://api.hyperd.ai/api/wallet/anomaly?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-hyperd-ai-60bc703d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XjrPxPu2IQW0CHCjIKTuK

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-hyperd-ai-60bc703d -d '<json body>'
```

Example prompt: Can you check if wallet 0x1234...abcd on Ethereum has shown any unusual behavior in the last 7 days — like a sudden spike in transactions, waking up after being dormant, or interacting with new protocols it's never touched before?

## When to prefer this

Use this endpoint when you need self-referential behavioral anomaly detection — comparing a wallet against its own historical baseline rather than against population norms. Ideal for detecting compromised hot wallets, dormant whale re-activation, or strategy shifts on a specific address. Prefer over generic risk/sanctions checks when the question is behavioral change over time rather than static risk classification.

## Known failure modes

- Invalid or malformed wallet address returns a 400 error
- Unsupported chain value returns a 400 validation error
- Wallet with no on-chain history may return empty or insufficient baseline data
- Payment not included or insufficient USDC causes a 402 Payment Required response
- Network timeout or upstream data provider outage returns a 5xx error
- Unrecognized window format returns a 400 error

## Output

Returns a structured anomaly report for the wallet including flags for transaction-volume spikes, dormant-wakeup events, new-protocol interactions, and counterparty diversification shifts, all benchmarked against the wallet's own 180-day behavioral baseline.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "chain": "ethereum",
   "window": "7d",
   "address": "0x1234567890123456789012345678901234567890"
  }
 }
}
```

## 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": [
      "address"
     ],
     "properties": {
      "chain": {
       "enum": [
        "base",
        "ethereum",
        "polygon",
        "arbitrum",
        "optimism",
        "avalanche",
        "bnb"
       ],
       "type": "string",
       "description": "Chain to analyze. Default 'base'."
      },
      "window": {
       "type": "string",
       "description": "Recent activity window. Accepts \"24h\", \"7d\", \"30d\", or bare integer days. Default \"24h\"."
      },
      "address": {
       "type": "string",
       "description": "0x EVM wallet address"
      }
     }
    }
   },
   "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/api-hyperd-ai-60bc703d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.hyperd.ai](https://www.zero.xyz/host/api.hyperd.ai/llms.txt)