# Arkham Polymarket Wallet Event History

> Arkham Polymarket Wallet Event History is a paid API for AI agents from api.arkm.com, paid per call via x402, $0.6/call, status unknown (last checked 2026-09-15).

Retrieves the on-chain event history for a specific wallet's activity on the Polymarket prediction market platform via Arkham Intelligence.

## Facts

- Endpoint: POST https://api.arkm.com/x402/polymarket/wallet/event-history
- Price: $0.6/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/arkham-polymarket-wallet-event-history-8a2cc0af
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__ZL8REsdMukjDS0fgchxT

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 arkham-polymarket-wallet-event-history-8a2cc0af -d '<json body>'
```

Example prompt: Pull the full Polymarket event history for wallet address 0xABC123... using Arkham — I want to see all their on-chain prediction market activity.

## When to prefer this

Use this endpoint when you need historical on-chain event data specifically for a wallet's Polymarket activity, as indexed and labeled by Arkham Intelligence. Prefer this over generic blockchain explorers when you want Arkham's entity labeling and intelligence layer applied to Polymarket-specific events. Best suited for forensic analysis, due diligence on prediction market participants, or auditing wallet behavior on Polymarket.

## Known failure modes

- Invalid or malformed wallet address returns an error response
- Wallet address with no Polymarket activity returns empty event list
- Rate limiting or authentication failure if API credentials are missing or invalid
- Network timeout for wallets with extremely large event histories
- Unsupported address format (e.g. non-EVM address) may return an error

## How this service works

Get Arkham Polymarket wallet event history. $0.60 per call.

## Output

Returns a list of on-chain events associated with the specified wallet's activity on Polymarket, including transaction records, prediction market interactions, position entries/exits, and related event metadata as indexed by Arkham Intelligence.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "addr": {
   "anyOf": [
    {
     "type": "string"
    },
    {
     "type": "number"
    },
    {
     "type": "boolean"
    },
    {
     "type": "array",
     "items": {
      "anyOf": [
       {
        "type": "string"
       },
       {
        "type": "number"
       },
       {
        "type": "boolean"
       }
      ]
     }
    }
   ],
   "description": "Required. Polymarket trade address (0x + 40 hex chars)."
  },
  "sort": {
   "anyOf": [
    {
     "type": "string"
    },
    {
     "type": "number"
    },
    {
     "type": "boolean"
    },
    {
     "type": "array",
     "items": {
      "anyOf": [
       {
        "type": "string"
       },
       {
        "type": "number"
       },
       {
        "type": "boolean"
       }
      ]
     }
    }
   ],
   "description": "Sort field: value, volume, trades, pnl, buyUsd, sellUsd, or endDate (resolution eligibility). Default: pnl. When status…"
  },
  "limit": {
   "anyOf": [
    {
     "type": "string"
    },
    {
     "type": "number"
    },
    {
     "type": "boolean"
    },
    {
     "type": "array",
     "items": {
      "anyOf": [
       {
        "type": "string"
       },
       {
        "type": "number"
       },
       {
        "type": "boolean"
       }
      ]
     }
    }
   ],
   "description": "Results per page (1-100, default 20)."
  },
  "order": {
   "anyOf": [
    {
     "type": "string"
    },
    {
     "type": "number"
    },
    {
     "type": "boolean"
    },
    {
     "type": "array",
     "items": {
      "anyOf": [
       {
        "type": "string"
       },
       {
        "type": "number"
       },
       {
        "type": "boolean"
       }
      ]
     }
    }
   ],
   "description": "Sort order: asc or desc. Default: desc."
  },
  "maxPnl": {
   "anyOf": [
    {
     "type": "string"
    },
    {
     "type": "number"
    },
    {
     "type": "boolean"
    },
    {
     "type": "array",
     "items": {
      "anyOf": [
       {
        "type": "string"
       },
       {
        "type": "number"
       },
       {
        "type": "boolean"
       }
      ]
     }
    }
   ],
   "description": "Maximum aggregate PnL in whole USD (can be negative)."
  },
  "minPnl": {
   "anyOf": [
    {
     "type": "string"
    },
    {
     "type": "number"
    },
    {
     "type": "boolean"
    },
    {
     "type": "array",
     "items": {
      "anyOf": [
       {
        "type": "string"
       },
       {
        "type": 
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/arkham-polymarket-wallet-event-history-8a2cc0af/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.arkm.com](https://www.zero.xyz/host/api.arkm.com/llms.txt)