Polymarket Trading Skill

Trade on Polymarket CLOB using the agent's Polygon wallet in EOA mode (signature_type=0).

Architecture

Mode	sig_type	How it works	Gas?
EOA (we use this)	`0`	Agent wallet = signer AND maker. No proxy.	Yes — POL for one-time approvals
Safe/Proxy	`2`	Gnosis Safe proxy holds funds, EOA signs.	No (relayer pays)

Why EOA? Simpler — no proxy deployment, no relayer. Only gas cost is ~$0.01 POL for one-time approvals. CLOB orders are gasless after that.

First-Time Onboarding

If POLY_API_KEY is NOT in .env, follow these steps:

1. Get Wallet Address

Use wallet_info to get the agent's Polygon address → this becomes POLY_WALLET.

2. Create API Credentials

Sign an EIP-712 ClobAuth message and POST to CLOB to get API key/secret/passphrase.

Domain: { name: "ClobAuthDomain", version: "1", chainId: 137, verifyingContract: "0x4bFb41d5B3570DeFd03C39a9A4D8dE6Bd8B8982E" } Types: ClobAuth: [address, timestamp(string), nonce(uint256), message(string)] Message: { address: WALLET, timestamp: NOW, nonce: "0", message: "This message attests that I control the given wallet" }

Sign with wallet_sign_typed_data
POST https://clob.polymarket.com/auth/api-key (VPN required) with L1 auth headers
Save to .env: POLY_API_KEY, POLY_SECRET, POLY_PASSPHRASE, POLY_WALLET

3. Fund the Wallet

Send to the agent wallet address on Polygon:

USDC (native Polygon USDC 0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174) — betting bankroll
POL (~1 POL / ~$0.20) — gas for approval txs

4. Approve USDC (One-Time, needs POL)

Approve both CTF Exchange contracts to spend USDC (max allowance):

from eth_abi import encode
from eth_utils import function_signature_to_4byte_selector
sel = function_signature_to_4byte_selector("approve(address,uint256)")
USDC = "0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174"
# Approval 1: CTF Exchange
data1 = sel + encode(['address','uint256'], ['0x4bFb41d5B3570DeFd03C39a9A4D8dE6Bd8B8982E', 2**256-1])
# wallet_transfer(to=USDC, amount="0", chain_id=137, data="0x"+data1.hex())
# Approval 2: CTF Exchange Neg-Risk
data2 = sel + encode(['address','uint256'], ['0xC5d563A36AE78145C45a50134d48A1215220f80a', 2**256-1])
# wallet_transfer(to=USDC, amount="0", chain_id=137, data="0x"+data2.hex())

5. Verify

python3 skills/polymarket-trade/scripts/poly_research.py balance

Should show USDC balance and allowance > 0. Setup complete.

Wallet Policy

Agent needs: eth_signTypedData_v4 (order signing) + eth_sendTransaction on chain 137 (approvals).

VPN Requirement

All CLOB API requests are geo-blocked. The script auto-routes through sc-vpn.internal:8080 (default: Germany). Gamma API is NOT blocked.

Set region in .env: POLY_VPN_REGION=de

Contracts (Polygon)

Contract	Address
CTF Exchange	`0x4bFb41d5B3570DeFd03C39a9A4D8dE6Bd8B8982E`
CTF Exchange (neg-risk)	`0xC5d563A36AE78145C45a50134d48A1215220f80a`
USDC	`0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174`

⚠️ MANDATORY: User Confirmation Before Betting

NEVER place a bet without explicit user confirmation. Always:

Research & analyze → present findings
Suggest bet with R/R → user reviews
User requests changes → adjust
User explicitly confirms → ONLY THEN execute

Workflow: Link → Bet

1. Market Lookup

python3 skills/polymarket-trade/scripts/poly_research.py lookup "<polymarket_url>"

2. Research

Read resolution criteria, end date, sources
web_search for news, expert opinions, data
Assess market price vs estimated fair probability
Present: overview, prices, key facts, probability estimate, edge

3. Orderbook & R/R

python3 skills/polymarket-trade/scripts/poly_research.py orderbook <token_id>
python3 skills/polymarket-trade/scripts/poly_research.py rr <token_id> <YES|NO> <size_usd>

4. Present Suggested Bet (WAIT for confirmation)

📊 Suggested Bet:
  Market: "Will X happen?"
  Side: YES @ $0.35 (market: 35%, est: 55%)
  Size: $20 → 57.14 tokens
  Win: +$37.14 | Lose: -$20.00 | R/R: 1:1.86

5. Execute (ONLY after confirmation)

# a. Check balance
python3 skills/polymarket-trade/scripts/poly_research.py balance

# b. Prepare order (outputs domain/types/message/meta JSON)
python3 skills/polymarket-trade/scripts/poly_research.py prepare <token_id> BUY <price> <size> [neg_risk] [tick_size]

# c. Sign with wallet_sign_typed_data (primaryType: "Order")

# d. Post signed order
python3 -c "
import sys; sys.path.insert(0, '/data/workspace/skills/polymarket-trade/scripts')
from poly_research import post_signed_order
s, r = post_signed_order('<token_id>', '<signature>', <meta_dict>)
print(s, r)
"

# e. Verify
python3 skills/polymarket-trade/scripts/poly_research.py orders

Other Commands

python3 skills/polymarket-trade/scripts/poly_research.py search "query"      # Find markets
python3 skills/polymarket-trade/scripts/poly_research.py positions           # Current positions
python3 skills/polymarket-trade/scripts/poly_research.py trades              # Recent trades
python3 skills/polymarket-trade/scripts/poly_research.py cancel <order_id>   # Cancel order
python3 skills/polymarket-trade/scripts/poly_research.py cancel_all          # Cancel all

Notes

Prices = probabilities: $0.55 = 55% implied, costs $0.55/token, pays $1 if correct
tick_size: 0.01 or 0.001 (from market data — always check)
neg_risk markets use CTF_EXCHANGE_NEG
Orders are GTC by default, 0 bps maker fee
Min order ~5 tokens (varies by market)

@1368/polymarket-trade