# Predge Polymarket Whale On-Chain Activity

> Predge Polymarket Whale On-Chain Activity is a paid API for AI agents from api.predge.io, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Fetches attested on-chain Polymarket prediction-market trades for a specific wallet address, returning signed trade records with market context.

## Facts

- Endpoint: GET https://api.predge.io/v1/onchain/pm-activity/%7Bwallet%7D
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/predge-polymarket-whale-on-chain-activity-d6f66569
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CsGbmGLyAj_jHXnBrFuw3

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 predge-polymarket-whale-on-chain-activity-d6f66569
```

Example prompt: Pull up the last 10 Polymarket trades for whale wallet 0x8dab6cf42d7e4d1cd6cca897b9e12a8cbe6d69e8 — I want to see which prediction markets they've been betting on and at what prices.

## When to prefer this

Use this endpoint when you need cryptographically attested, on-chain Polymarket trade records for a specific wallet — particularly when you want to verify whale trading patterns, track insider-like behavior, or analyze a wallet's prediction-market positions with signed provenance. Prefer this over generic blockchain explorers when you need Polymarket-specific trade context (market title, condition ID, YES/NO side) rather than raw token transfers.

## Known failure modes

- Wallet address not found or has no Polymarket activity — returns empty trades array
- Invalid wallet address format — likely returns 400 or empty result
- limit parameter out of range (below 1 or above 50) — may return validation error
- Payment failure (x402) — request rejected if USDC micropayment not provided
- Polygon RPC or indexer outage — may return 503 or stale data
- Wallet has only general crypto flows (not PM trades) — returns empty or filtered-out results per scope

## How this service works

Real-time alerts on whale traders on Polymarket. Heuristic Insider Watch, wallet scoring 0–100, Bloomberg-style web terminal. Free plan included.

## Output

Returns a JSON object containing a list of attested Polymarket trades for the specified wallet, each including transaction hash, block timestamp, market title, condition ID, trade side (yes/no), price (0–1), size in USD, and a cryptographic ed25519 attestation signature verifying the on-chain data. Also includes total count, chain (polygon), and platform (polymarket).

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "chain": "polygon",
  "count": 1,
  "scope": "polymarket-whale on-chain activity (prediction-market trades only, not general crypto flows)",
  "trades": [
   {
    "tx_hash": "0x6a7de5…",
    "block_time": "2026-07-17T09:41:02.000Z",
    "attestation": {
     "kind": "onchain-activity",
     "payload": {
      "kind": "onchain-activity",
      "side": "yes",
      "chain": "polygon",
      "price": "0.6200",
      "wallet": "0x8dab6cf42d7e4d1cd6cca897b9e12a8cbe6d69e8",
      "tx_hash": "0x6a7de5…",
      "platform": "polymarket",
      "size_usd": "25400.00",
      "issued_at": "2026-08-02T10:00:00.000Z",
      "block_time": "2026-07-17T09:41:02.000Z",
      "condition_id": "0x178a746e2b342c25b1d78d0f0d0ea77157c9b6d40b2e97ffbf827cd7f9994c39"
     },
     "algorithm": "ed25519",
     "canonical": "{…keys sorted, no whitespace…}",
     "signature": "3a1f…64-byte-hex…9c",
     "public_key": "d75a9807...c7e2a1"
    },
    "condition_id": "0x178a746e2b342c25b1d78d0f0d0ea77157c9b6d40b2e97ffbf827cd7f9994c39",
    "market_title": "Will the Fed cut rates in September?"
   }
  ],
  "wallet": "0x8dab6cf42d7e4d1cd6cca897b9e12a8cbe6d69e8",
  "platform": "polymarket"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/predge-polymarket-whale-on-chain-activity-d6f66569/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.predge.io](https://www.zero.xyz/host/api.predge.io/llms.txt)