polymarket-skill

name	polymarket-skill
description	Place bets on Polymarket prediction markets using the Polygon Agent CLI (CLOB V2). Browse markets, check prices, buy YES/NO positions, sell positions, manage orders. Collateral is pUSD (auto-wrapped from USDC.e). All commands are JSON output. Dry-run by default — always add --broadcast to execute.

Polymarket Skill (CLOB V2)

Session Initialization

Before any polymarket command, verify the Polymarket key is set:

polygon-agent polymarket proxy-wallet

If this returns ok: true with an eoaAddress and proxyWalletAddress, the key is configured and you can proceed directly to trading. If it errors, the user needs to run set-key (see Onboarding below).

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Understanding the 3 Addresses

Every Polymarket user has three addresses. Do not confuse them:

Name	What it is	Used for
EOA	Private key owner. Shown as eoaAddress in CLI output	Signs transactions and CLOB orders. Needs POL for gas only when running approve
Proxy Wallet	Shown as proxyWalletAddress in CLI output. This is what Polymarket shows as "your address" in the UI	Holds pUSD and outcome tokens. The CLOB maker
Smart Wallet	The Sequence wallet (polygon-agent wallet)	Funds the proxy wallet with USDC.e per trade (auto-wrapped to pUSD)

For trading: USDC.e flows from the Sequence smart wallet → proxy wallet → auto-wrapped to pUSD → CLOB orders. The proxy wallet is the trading identity.

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Pre-Trade Checklist

Before placing a trade, verify these four things in order:

1. EOA key is configured

polygon-agent polymarket proxy-wallet
# → must return ok: true with eoaAddress and proxyWalletAddress

2. ToS accepted on Polymarket ← one-time per EOA, permanent

• Visit https://polymarket.com, connect with the EOA address, accept Terms of Service
• If ToS is not accepted, CLOB order posting will fail with not authorized
• If the user has previously traded on Polymarket with this EOA, ToS is already accepted — skip this

3. Proxy wallet approvals set for V2 exchange ← required for all users after V2 migration

• Approvals allow the proxy wallet to interact with the V2 CTF exchange contracts and CollateralOnramp
• All users must run approve --broadcast after the V2 migration (April 28 2026) — V1 approvals on old exchange contracts do not carry over
• After running V2 approvals once, they are permanent on-chain for that EOA

4. Smart wallet has USDC.e ← required per trade, minimum $1

polygon-agent balances
# → check USDC.e balance (0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174)
# → must have at least $1 USDC.e to place any order
# → USDC.e is auto-wrapped to pUSD during the buy flow

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Onboarding: First-Time Setup

Option A — Using email login (existing Polymarket account)

Step 1: Get the private key from Polymarket

1. Go to: https://reveal.magic.link/polymarket
2. Connect/authenticate with the same email used for Polymarket
3. Copy the exported private key (0x...)

Step 2: Import the key into the CLI

polygon-agent polymarket set-key <privateKey>

Output confirms the eoaAddress and proxyWalletAddress.

Step 3: Show the user their addresses

polygon-agent polymarket proxy-wallet

Tell the user: "Your EOA is <eoaAddress> — this needs a small amount of POL for the one-time approval step. Your Polymarket trading address (proxy wallet) is <proxyWalletAddress> — this is where your pUSD and outcome tokens live."

Step 4: Fund EOA with POL for gas (approval step only)

polygon-agent send-native --to <eoaAddress> --amount 0.1 --broadcast

The EOA only needs POL for the one-time approve transaction. After that, trading requires no gas from the EOA.

Step 5: Accept Terms of Service

1. Go to https://polymarket.com
2. Connect with the EOA address
3. Accept Terms of Service when prompted

Step 6: Set proxy wallet approvals for V2 (one-time, permanent)

polygon-agent polymarket approve --broadcast

This sets approvals for the V2 exchange contracts and CollateralOnramp. Permanent on-chain — never needs to be run again for this EOA.

Option B — Using the builder EOA (no Polymarket account)

Step 1: Confirm addresses

polygon-agent polymarket proxy-wallet

Step 2: Accept Terms of Service (required)

1. Go to https://polymarket.com
2. Connect with the EOA address shown above
3. Accept Terms of Service when prompted

Step 3: Fund EOA with POL for gas

polygon-agent send-native --to <eoaAddress> --amount 0.1 --broadcast

Step 4: Set proxy wallet approvals for V2 (one-time)

polygon-agent polymarket approve --broadcast

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Commands

Browse Markets

# List top markets by volume
polygon-agent polymarket markets

# Search by keyword
polygon-agent polymarket markets --search "bitcoin" --limit 10

# Paginate
polygon-agent polymarket markets --limit 20 --offset 20

Key output fields per market:

• conditionId — the ID needed for all trading commands
• question — what the market is asking
• yesPrice / noPrice — current probability (0 to 1, e.g. 0.65 = 65%)
• negRisk — if true, set neg-risk approvals before trading this market
• endDate — when the market resolves

Get a Single Market

polygon-agent polymarket market <conditionId>

Use this to confirm prices and token IDs before placing an order.

Show Proxy Wallet Address

polygon-agent polymarket proxy-wallet

Confirms which EOA and proxy wallet are active. The proxy wallet is where pUSD and tokens are held.

Set Approvals (Required After V2 Migration)

# Standard markets
polygon-agent polymarket approve --broadcast

# Neg-risk markets (only if you see negRisk: true on a market you want to trade)
polygon-agent polymarket approve --neg-risk --broadcast

All users must run this after the V2 migration — previous V1 approvals on old exchange contracts do not carry over. V2 approvals cover: pUSD → V2 exchange, CTF → V2 exchange, and USDC.e → CollateralOnramp (for wrapping). Once set, they are permanent on-chain.

Buy a Position

# Dry-run first — always check before executing
polygon-agent polymarket clob-buy <conditionId> YES|NO <usdcAmount>

# Execute — funds proxy wallet, wraps USDC.e → pUSD, then places order
polygon-agent polymarket clob-buy <conditionId> YES|NO <usdcAmount> --broadcast

# If proxy wallet already has pUSD from a previous failed order (skip the funding step)
polygon-agent polymarket clob-buy <conditionId> YES|NO <usdcAmount> --skip-fund --broadcast

# Limit order — fill only at this price or better
polygon-agent polymarket clob-buy <conditionId> YES <usdcAmount> --price 0.45 --broadcast

How it works:

1. Smart wallet transfers usdcAmount USDC.e to the proxy wallet (Sequence tx)
2. Proxy wallet wraps USDC.e → pUSD via CollateralOnramp (on-chain, EOA gas)
3. Posts CLOB BUY order: maker=proxy wallet, signer=EOA (off-chain, no gas)
4. Tokens arrive in proxy wallet on fill

Order types:

• No --price: FOK market order (fill entirely or cancel)
• --fak: FAK market order (partial fills allowed)
• --price 0.x: GTC limit order (stays open until filled or cancelled)

Minimum order size: $1. The CLOB rejects orders below $1. If the fund+wrap step runs but the order is rejected, the pUSD stays in the proxy wallet — use --skip-fund on the retry.

Sell a Position

# Dry-run first
polygon-agent polymarket sell <conditionId> YES|NO <shares>

# Execute
polygon-agent polymarket sell <conditionId> YES|NO <shares> --broadcast

# Limit sell
polygon-agent polymarket sell <conditionId> YES <shares> --price 0.80 --broadcast

<shares> is the number of outcome tokens (not USD). Get share count from positions. Selling is pure off-chain — no gas, no on-chain tx. Proceeds are received as pUSD in the proxy wallet.

Check Positions

polygon-agent polymarket positions

Shows all open positions in the proxy wallet with current value, P&L, and outcome.

Check Open Orders

polygon-agent polymarket orders

Lists GTC limit orders that are still open (FOK/FAK orders are never "open" — they fill or cancel immediately).

Cancel an Order

polygon-agent polymarket cancel <orderId>

Get orderId from the orders command or from the orderId field in clob-buy output.

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Full Autonomous Trading Flow

# ── FIRST TIME (run once per EOA) ──────────────────────────────────────

# 1. Import Polymarket private key
polygon-agent polymarket set-key 0x<yourPrivateKey>
# → save eoaAddress and proxyWalletAddress

# 2. Accept ToS at https://polymarket.com (connect EOA, accept when prompted)

# 3. Fund EOA with POL for the one-time approval tx
polygon-agent send-native --to <eoaAddress> --amount 0.1 --broadcast

# 4. Set V2 approvals (one-time, permanent — covers pUSD, CTF, and CollateralOnramp)
polygon-agent polymarket approve --broadcast

# ── RETURNING USER ──────────────────────────────────────────────────────
# If V2 approvals were already set: skip steps 1-4, go straight to trading.
# NOTE: V1 approvals (pre-April 28 2026) do NOT carry over — re-run approve once.

# ── FIND A MARKET ────────────────────────────────────────────────────────

# 5. Search for markets
polygon-agent polymarket markets --search "bitcoin" --limit 10

# 6. Get details on a specific market
polygon-agent polymarket market 0x<conditionId>
# → check: yesPrice, noPrice, negRisk, endDate
# → if negRisk: true → run approve --neg-risk --broadcast first

# ── ENTER A POSITION ────────────────────────────────────────────────────

# 7. Dry-run to confirm
polygon-agent polymarket clob-buy 0x<conditionId> YES 5
# → review: currentPrice, proxyWalletAddress, flow (includes pUSD wrapping)

# 8. Execute
polygon-agent polymarket clob-buy 0x<conditionId> YES 5 --broadcast
# → check: orderStatus === "matched"

# ── MANAGE ──────────────────────────────────────────────────────────────

# 9. Check positions
polygon-agent polymarket positions
# → review: size (shares), curPrice, cashPnl

# 10. Sell when ready
polygon-agent polymarket sell 0x<conditionId> YES <shares> --broadcast
# → orderStatus === "matched" means pUSD is back in proxy wallet

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Decision Logic for an Autonomous Agent

When deciding whether to buy:

1. Run proxy-wallet — confirm EOA and proxy wallet addresses
2. Run balances — confirm smart wallet has at least $1 USDC.e
3. Check positions — avoid doubling up on already-held positions
4. Check markets — use yesPrice/noPrice as probability inputs
5. Check negRisk on the target market — if true, verify neg-risk approvals were set
6. Use --skip-fund if the proxy wallet already has enough pUSD from a previous attempt
7. Always dry-run first, then broadcast

When deciding whether to sell:

1. Get current size (shares) from positions
2. Use curPrice vs avgPrice to assess profit/loss
3. Market sell (sell --broadcast) for immediate exit
4. Limit sell (--price 0.x --broadcast) to wait for a better price

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Troubleshooting

Error	Cause	Fix
No EOA key found	set-key not run	Run polygon-agent polymarket set-key <pk>
Could not create api key (stderr only)	ToS not accepted	Non-fatal — CLI retries with deriveApiKey and may still succeed. If orders fail too, visit polymarket.com and accept ToS with the EOA
CLOB order error: not authorized	ToS not accepted	Visit polymarket.com, connect EOA wallet, accept terms
insufficient funds for gas	EOA has no POL	polygon-agent send-native --to <eoaAddress> --amount 0.1 --broadcast
Market not found	Low-volume or closed market	Market may have resolved; try --search with different terms
Market has no tokenIds	Closed market	Check endDate — market resolved
orderStatus: "unmatched" on FOK	No liquidity at market price	Try --fak for partial fill, or --price 0.x for limit order
invalid amount for a marketable BUY order ($X), min size: $1	Amount below CLOB minimum	Use at least $1. If pUSD was already funded, retry with --skip-fund
Wallet not found: main	No Sequence wallet	Run polygon-agent wallet create
No signer supported for call	Wallet session missing USDC.e whitelist	Re-create wallet session: polygon-agent wallet create --name main
Approvals tx reverts after V2 migration	V1 approvals — wrong exchange contracts	Re-run polygon-agent polymarket approve --broadcast for V2 contracts

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Key Facts for Agents

• CLOB V2 is active (since April 28, 2026). Collateral is pUSD, not USDC.e.
• All commands are dry-run by default. approve, clob-buy, sell do nothing without --broadcast.
• V2 approvals are required for all users. V1 approvals on old exchange contracts do not carry over. Run approve --broadcast once after migration.
• clob-buy handles the full flow automatically: transfers USDC.e from smart wallet → proxy wallet, wraps USDC.e → pUSD, then places the CLOB order (unless --skip-fund).
• Positions live in the proxy wallet, not the Sequence smart wallet. positions queries the proxy wallet.
• Sell is free. No gas, no on-chain tx. Selling via CLOB is a signed off-chain message only. Proceeds are pUSD.
• orderStatus: "matched" means the trade filled. "unmatched" means FOK failed (no liquidity).
• Fees are protocol-determined at match time. Makers never pay fees — only takers. No feeRateBps on orders.
• The proxy wallet address never changes. It is deterministic from the EOA via CREATE2.
• Could not create api key in stderr is non-fatal. The CLI handles this automatically.