Polymarket Whale Tracker — Insider-Scored Trades, Top Holders & Wallet P&L

Track the smart money on Polymarket without building a data pipeline: a clean, deduplicated whale alert feed of large trades (each scored 0–100 for "how unusual is this?"), top holders for any prediction market, and full wallet P&L reports — from Polymarket's public APIs, normalized into one schema. Perfect for whale alerts, copy-trading research, smart-money dashboards, and prediction-market analytics.

Why this tracker

• Insider-style scoring, not just size. Every trade gets a 0–100 score from heuristics built for a private prediction-market trading engine: conviction longshots (big money at extreme odds), niche-market concentration (big fish in small pools), late-certainty sweeps (resolution-sniping pattern).
• You are never billed twice for the same trade. Whale-feed mode keeps a cross-run dedup store of transaction hashes — schedule it hourly and you only pay for new events.
• Partial-failure resilient. One delisted market or bad wallet never kills your run; you get the error inline and everything else completes.
• Every record carries the on-chain tx hash — verify any trade independently on Polygonscan. No black-box numbers.
• No API keys, no wallet, no login — public Polymarket endpoints only. Works out of the box.

Modes

Mode	What you get	Typical use
whale-feed	All trades ≥ minTradeUsd across Polymarket, insider-scored	Whale alerts (webhook/Slack/Telegram), smart-money dashboards
market-whales	Top holders + recent whale trades for given market slugs	Research one election/race/event in depth
wallet-tracker	Positions, open P&L, recent activity per wallet	Follow specific proven traders (copy-trading research)

Quick start

1. Pick a mode (default whale-feed works with zero config).
2. Run once to see the data, then schedule it (every 10–60 min) for a continuous feed.
3. Add an Apify webhook integration to pipe new whales straight into Slack, Discord, Telegram, or your own endpoint.

Input reference

Field	Mode	Default	Notes
mode	—	whale-feed	whale-feed | market-whales | wallet-tracker
minTradeUsd	whale-feed, market-whales	10000	Only trades at/above this USD size
maxResults	whale-feed	100	Hard cap per run — bounds your cost
dedupAcrossRuns	whale-feed	true	Never output (or bill) the same tx twice
markets	market-whales	[]	Market slugs from the polymarket.com URL (max 25)
topHolders	market-whales	10	Largest holders returned per market
wallets	wallet-tracker	[]	Proxy wallet addresses 0x… (max 50)
maxPositions	wallet-tracker	25	Open positions per wallet report
activityLimit	wallet-tracker	25	Recent trades/redemptions per wallet report

Sample output (whale-feed)

{
  "detectedAt": "2026-06-09T19:40:11+00:00",
  "tx": "0x8be0...",
  "wallet": "0xd1049158a102840ce595efc6ab683a0cb6fbacef",
  "trader": "pilimili",
  "side": "BUY",
  "outcome": "Yes",
  "price": 0.9705,
  "shares": 19419.75,
  "usd": 18847.27,
  "title": "Israel closes its airspace by June 9?",
  "slug": "israel-closes-its-airspace-by-june-9",
  "link": "https://polymarket.com/event/israel-closes-its-airspace-by-june-9",
  "score": 30
}

What the 0–100 insider score means

Signal	Points	Why it matters
Trade size ($1k → $100k+)	up to 45	Bigger bets = stronger conviction
Conviction longshot (big BUY ≤ 15¢ / SELL ≥ 85¢)	+20	Informed traders take asymmetric odds
Niche market (< $50k daily volume)	+25	Big fish in small pools move first
Late-certainty sweep (≥ 95¢ BUY ≥ $20k)	+10	Classic resolution-sniping pattern

Score ≥ 60 is rare and worth a look; sort the dataset by score descending.

Pricing

Pay-per-event: you're charged only for records actually delivered (new whale trades / market snapshots / wallet reports). Set maxResults to hard-cap any run's cost; dedup means scheduled runs only pay for genuinely new activity.

Use with AI agents (Claude, Cursor, n8n — MCP)

This Actor works out of the box as an MCP tool. Point your agent at Apify's hosted MCP server and it can call the Actor directly:

{
  "mcpServers": {
    "apify": {
      "url": "https://mcp.apify.com?tools=mrlarryjohnson/polymarket-whale-tracker-pro"
    }
  }
}

OAuth sign-in happens on first connect (or use an Authorization: Bearer <APIFY_TOKEN> header). Your agent can then fetch live insider-scored whale trades, market holders, or wallet P&L on demand and reason over the results — same pay-per-event pricing, no extra setup.

FAQ

• Do I need API keys or a crypto wallet? No — public Polymarket endpoints only.
• How fresh is the data? Each run pulls live data; schedule the actor (e.g. every 10–60 min) for a near-real-time whale feed.
• Can I export to CSV / Excel / JSON? Yes — standard Apify dataset export formats.
• Does it cover sports, elections, crypto markets? All of Polymarket — every market, every category.
• Is this financial advice? No. Informational data only.

Changelog

• 0.1 — initial release: three modes (whale feed, market whales, wallet tracker), 0–100 insider scoring, cross-run dedup billing.