Moonpay Fund Polymarket

Fund Polymarket

Goal

Install the Polymarket CLI and fund its wallet with POL (gas) and USDC.e (trading) via MoonPay so it's ready to trade on Polymarket.

Polymarket runs on Polygon. To trade, the user needs:

• POL — native gas token for transaction fees
• USDC.e (0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174) — the token Polymarket uses for bets

Key addresses

Workflow

1. Install Polymarket CLI

Check if the Polymarket CLI is already installed:

polymarket --version

If not installed, download and install:

curl -sSL https://raw.githubusercontent.com/Polymarket/polymarket-cli/main/install.sh | sh

This downloads the binary for your platform, verifies the SHA-256 checksum, and installs to /usr/local/bin. If that fails due to sudo permissions, install to a user-writable location:

mkdir -p ~/.local/bin
# Download and extract the binary for your platform, then:
cp polymarket ~/.local/bin/polymarket && chmod +x ~/.local/bin/polymarket

2. Set up Polymarket wallet

Run the guided setup if no wallet exists:

polymarket setup

This creates a wallet, sets up a proxy wallet, and approves Polymarket contracts on Polygon.

Then get the wallet address:

polymarket wallet address

Use this address as the --wallet for all MoonPay funding commands below. EVM addresses are the same across all chains, so the Polymarket address works directly with MoonPay.

3. Check existing Polygon balances

mp token balance list --wallet <polymarket-address> --chain polygon

If the wallet already has POL and USDC.e, they're set.

4. Get POL for gas

Buy POL directly with fiat — easiest way to get gas on Polygon:

mp buy --token pol_polygon --amount 5 --wallet <polymarket-address> --email <email>

Alternatively, bridge ETH → POL if the user already has ETH:

mp token bridge \
  --from-wallet <wallet-name> --from-chain ethereum \
  --from-token 0x0000000000000000000000000000000000000000 \
  --from-amount 0.001 \
  --to-chain polygon \
  --to-token 0x0000000000000000000000000000000000000000

~$2-5 worth of POL covers hundreds of transactions.

5. Get USDC.e for trading

Bridge ETH on Ethereum to USDC.e on Polygon in one step:

mp token bridge \
  --from-wallet <wallet-name> --from-chain ethereum \
  --from-token 0x0000000000000000000000000000000000000000 \
  --from-amount 0.005 \
  --to-chain polygon \
  --to-token 0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174

Alternatively, if the user already has USDC on Ethereum, bridge it directly:

mp token bridge \
  --from-wallet <wallet-name> --from-chain ethereum \
  --from-token 0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48 \
  --from-amount 10 \
  --to-chain polygon \
  --to-token 0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174

6. Verify

mp token balance list --wallet <polymarket-address> --chain polygon

Confirm both POL and USDC.e are present.

7. Trade on Polymarket

Once funded, trade directly via MoonPay CLI:

# Search markets
mp prediction-market market search --provider polymarket --query "bitcoin"

# Get trending markets
mp prediction-market market trending list --provider polymarket

# Register wallet (one-time)
mp prediction-market user create --provider polymarket --wallet <evm-address>

# Buy shares
mp prediction-market position buy --wallet main --provider polymarket --tokenId <token-id> --price 0.65 --size 100

# Check positions
mp prediction-market position list --provider polymarket --wallet <evm-address>

# Check PnL
mp prediction-market pnl retrieve --provider polymarket --wallet <evm-address>

Or use the Polymarket CLI for advanced order types:

polymarket markets search "query"           # find markets
polymarket clob price <token_id>            # check prices
polymarket clob market-order ...            # place orders
polymarket clob balance                     # check trading balance

Tips

• polymarket wallet address gives you the address to fund — use it as --wallet in all MoonPay commands
• EVM addresses are shared across chains, so one address works for Polygon, Ethereum, Base, etc.
• Bridge times from Ethereum → Polygon are typically 5-20 seconds
• POL is very cheap for gas — a few dollars covers hundreds of transactions
• The fiat buy option (mp buy) is the fastest path if the user has no crypto yet

Related skills

• moonpay-prediction-market — Full prediction market trading guide
• moonpay-swap-tokens — Bridge commands and supported chains
• moonpay-check-wallet — Check Polygon balances
• moonpay-buy-crypto — Buy POL or ETH with fiat