Productivity

nansen-polymarket-insider-scan

nansen-ai/nansen-cli · updated Apr 8, 2026

$npx skills add https://github.com/nansen-ai/nansen-cli --skill nansen-polymarket-insider-scan
summary

Answers: "Are there wallets with suspicious trading patterns in this Polymarket market?"

skill.md

PM Suspicious Wallet Scanner

Answers: "Are there wallets with suspicious trading patterns in this Polymarket market?"

# 1. Find the resolved market
nansen research prediction-market market-screener --query "<market name>" --status closed --limit 5
# → market_id, question, volume, last_trade_price

# 2. Get top winners (positive PnL) — paginate if needed, keep per_page <= 10
MID=<market_id>
nansen research prediction-market pnl-by-market --market-id $MID --limit 10
# → address (proxy), owner_address (wallet), side_held, net_buy_cost_usd, total_pnl_usd

# 3. For each top winner, run these three calls (use proxy address for PM, owner for profiler):
PROXY=<address_from_pnl>
nansen research prediction-market trades-by-address --address $PROXY --limit 100
# → market_id, market_question, side, price, size, usdc_value, taker_action, timestamp

OWNER=<owner_address_from_pnl>
nansen research profiler historical-balances --address $OWNER --chain polygon --days 365 --sort block_timestamp:asc --limit 100
# → block_timestamp, value_usd, token_symbol — first non-zero value_usd = wallet funding date

nansen research profiler labels --address $OWNER --chain polygon
# → label, category

For each winner, compute ROI = total_pnl_usd / net_buy_cost_usd * 100 (skip ROI flags if net_buy_cost_usd <= 0), then score (0–13). Within each tier group, apply only the highest matching flag:

Flag Pts Trigger
NEW_WALLET 3 First funded within 7 days of now
YOUNG_WALLET 1 First funded 8–28 days ago (skip if NEW_WALLET fires)
SINGLE_MARKET 3 trades-by-address shows only 1 distinct market_id
FEW_MARKETS 1 2–3 distinct market_ids (skip if SINGLE_MARKET fires)
EXTREME_ROI 3 ROI >= 500%
HIGH_ROI 2 ROI 200–499% (skip if EXTREME_ROI fires)
LATE_ENTRY 2 Any trade on this market at price >= 0.80
LARGE_POSITION 2 net_buy_cost_usd >= $10k
KNOWN_ENTITY -2 Has Nansen labels

Flagged at score >= 3. High risk at >= 7. High-confidence suspicious pattern: NEW_WALLET + SINGLE_MARKET + EXTREME_ROI (score 9+).

If owner_address is invalid (e.g. "0x"), use the proxy address for profiler calls too. If historical-balances returns no records with value_usd > 0, the wallet may predate the 365-day window — treat wallet age as unknown and skip NEW_WALLET / YOUNG_WALLET flags. Pause ~1.5s between wallets to avoid rate limits. Skip wallets that error and continue scanning.

general reviews

Ratings

4.510 reviews
  • Shikha Mishra· Oct 10, 2024

    nansen-polymarket-insider-scan is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.

  • Piyush G· Sep 9, 2024

    Keeps context tight: nansen-polymarket-insider-scan is the kind of skill you can hand to a new teammate without a long onboarding doc.

  • Chaitanya Patil· Aug 8, 2024

    Registry listing for nansen-polymarket-insider-scan matched our evaluation — installs cleanly and behaves as described in the markdown.

  • Sakshi Patil· Jul 7, 2024

    nansen-polymarket-insider-scan reduced setup friction for our internal harness; good balance of opinion and flexibility.

  • Ganesh Mohane· Jun 6, 2024

    I recommend nansen-polymarket-insider-scan for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.

  • Oshnikdeep· May 5, 2024

    Useful defaults in nansen-polymarket-insider-scan — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.

  • Dhruvi Jain· Apr 4, 2024

    nansen-polymarket-insider-scan has been reliable in day-to-day use. Documentation quality is above average for community skills.

  • Rahul Santra· Mar 3, 2024

    Solid pick for teams standardizing on skills: nansen-polymarket-insider-scan is focused, and the summary matches what you get after install.

  • Pratham Ware· Feb 2, 2024

    We added nansen-polymarket-insider-scan from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.

  • Yash Thakker· Jan 1, 2024

    nansen-polymarket-insider-scan fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.