# BlockRun Polymarket Similar Wallets Lookup

> BlockRun Polymarket Similar Wallets Lookup is a paid API for AI agents from blockrun.ai, paid per call via x402, $0.0085/call, status unknown (last checked 2026-10-24).

Fetches wallets with similar trading behavior to a given Polymarket wallet address

## Facts

- Endpoint: GET https://blockrun.ai/api/v1/pm/polymarket/wallet/0x0000000000000000000000000000000000000000/similar?utm_source=zero.xyz
- Price: $0.0085/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockrun-polymarket-similar-wallets-lookup-7818f1d7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JLOnj64i36djhFu5-nGdp

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 blockrun-polymarket-similar-wallets-lookup-7818f1d7
```

Example prompt: Find Polymarket wallets that trade similarly to 0x0000000000000000000000000000000000000000 — I want to see which accounts have comparable betting patterns.

## When to prefer this

Use this endpoint when you need to discover Polymarket traders with behavioral similarity to a known wallet — ideal for building trader networks, identifying copy-trade candidates, or performing competitive analysis within prediction markets. Prefer this over general wallet lookup endpoints when the goal is similarity-based discovery rather than direct wallet data retrieval.

## Known failure modes

- Invalid or malformed wallet address returns an error or empty result
- Zero address (0x000...000) may return no meaningful similar wallets
- Wallet with no Polymarket activity may yield empty results
- Payment failure (402) if USDC balance is insufficient
- Rate limiting or upstream Polymarket API unavailability

## How this service works

BlockRun lets AI agents use money well: pay for results, not for seats or subscriptions, and put every cent on the model or tool that actually does the job.

## Output

Returns a list of Polymarket wallet addresses and associated profile data that exhibit similar on-chain trading behavior to the queried wallet, enabling peer comparison and trader discovery.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "query": {
     "type": "object",
     "required": [],
     "properties": {}
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "example": {
     "type": "object",
     "properties": {
      "data": {
       "type": "object"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockrun-polymarket-similar-wallets-lookup-7818f1d7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from blockrun.ai](https://www.zero.xyz/host/blockrun.ai/llms.txt)