polymarket-mert-sniper

# Mert Sniper

Near-expiry conviction trading on Polymarket. Snipe markets about to resolve when the odds are heavily skewed.

> Strategy by [@mert](https://x.com/mert/status/2020216613279060433) — filter by topic, cap your bets, wait until near expiry, and only trade strong splits.

> **This is a template.** The default logic (expiry + split filter) gets you started — remix it with your own filters, timing rules, or market selection criteria. The skill handles all the plumbing (market discovery, trade execution, safeguards). Your agent provides the alpha.

## When to Use This Skill

> **Polymarket only.** All trades execute on Polymarket with real USDC. Use `--live` for real trades, dry-run is the default.

Use this skill when the user wants to:
- Trade markets that are about to resolve (last-minute conviction bets)
- Filter by topic (e.g. only SOL/crypto markets)
- Cap bet size (e.g. never more than $10)
- Only trade when odds are strongly skewed (e.g. 60/40 or better)
- Run an automated expiry-sniping strategy

## Setup Flow

1. **Ask for Simmer API key**
   - Get it from simmer.markets/dashboard -> SDK tab
   - Store in environment as `SIMMER_API_KEY`

2. **Ask for wallet private key** (required for live trading)
   - This is the private key for their Polymarket wallet (the wallet that holds USDC)
   - Store in environment as `WALLET_PRIVATE_KEY`
   - The SDK uses this to sign orders client-side automatically — no manual signing needed

3. **Ask about settings** (or confirm defaults)
   - Market filter: Which markets to scan (default: all)
   - Max bet: Maximum per trade (default $10)
   - Expiry window: How close to resolution (default 2 minutes)
   - Min split: Minimum odds skew (default 60/40)

4. **Save settings to config.json or environment variables**

## Configuration

| Setting | Environment Variable | Default | Description |
|---------|---------------------|---------|-------------|
| Market filter | `SIMMER_MERT_FILTER` | (all) | Tag or keyword filter (...