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name: polymarket-edge description: "Trade and analyse Polymarket prediction markets with a 5-minute BTC EMA crossover strategy. Browse markets, read order books, run signals, manage a live auto-trader, and view portfolio positions. Billed per-call via SkillPay.me (0.001 USDT / call, BNB Chain USDT)." metadata: openclaw: requires: env: - SKILL_BILLING_API_KEY - SKILL_ID bins: - python3 - pip primaryEnv: SKILL_BILLING_API_KEY

Polymarket Edge

A locally-running FastAPI skill that wraps the Polymarket Gamma + CLOB APIs with a built-in EMA(5/20) crossover strategy and SkillPay.me billing.

Setup

# Install dependencies
pip install -r requirements.txt

# Set required environment variables
export SKILL_BILLING_API_KEY=sk_your_skillpay_api_key_here
export SKILL_ID=polymarket-edge

# Start the skill server (port 8080)
python main.py

The interactive docs are available at http://localhost:8080/docs.

Environment variables

Variable	Required	Description
SKILL_BILLING_API_KEY	✅	From your skillpay.me dashboard
SKILL_ID	✅	Your skill slug, e.g. polymarket-edge
POLYMARKET_PRIVATE_KEY	optional	EVM private key for live order placement

Billing

Every billed endpoint requires ?user_id=<id> in the query string. If the user has no tokens the API returns HTTP 402 with a top_up_url.

GET  /balance?user_id=alice          → current token balance
GET  /topup?user_id=alice&amount=10  → BNB Chain USDT payment link

1 USDT = 1 000 tokens · 1 call = 1 token · min top-up 8 USDT · SkillPay takes 5 %

Key endpoints (all require ?user_id=)

Market data

GET /markets/search?q=bitcoin    Search all Polymarket markets
GET /markets/btc                 List active BTC/Bitcoin markets
GET /market/{id}                 Single market details
GET /market/{token_id}/book      Full order book (bids + asks)
GET /market/{token_id}/price     Mid-price, spread, implied probability
GET /market/{token_id}/history   5-min OHLCV candles

Strategy signals

POST /signal                     Run EMA crossover on top BTC markets
                                 Returns BUY_YES / BUY_NO / HOLD / SKIP per market

Auto-trader

GET  /autotrader/status          Is the auto-trader running?
POST /autotrader/start           Start 5-min BTC cycle (background task)
POST /autotrader/stop            Stop auto-trader
GET  /autotrader/log             Last 50 trade log entries

Portfolio

GET /portfolio?wallet=0x...      Open positions + USD value for a wallet

Strategy logic

• Candles: 5-minute YES-token price history from Polymarket CLOB
• Signal: EMA(5) crosses above EMA(20) → BUY_YES; crosses below → BUY_NO
• Filters: skip if spread > 0.05 or YES price outside [0.15, 0.85]
• Live trading: set ?auto_trade=true on /autotrader/start (requires POLYMARKET_PRIVATE_KEY + py-clob-client)

Live trading (optional)

pip install py-clob-client
export POLYMARKET_PRIVATE_KEY=0x<your_burner_wallet>
# Then uncomment the py-clob-client block in polymarket_client.py
curl -X POST "http://localhost:8080/autotrader/start?user_id=alice&auto_trade=true"

⚠️ Use a burner wallet. Never commit your private key.