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How to Provide Liquidity and Sell USDC

How to provide liquidity on ZKP2P.

Step 1: Navigate to ZKP2P​

Visit https://peer.xyz in your browser.

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Step 2: Check Current Market Rates​

  • Click on the Liquidity tab in the main navigation bar
  • Review current spreads and rates for the currencies you're interested in
  • Pay attention to available liquidity and limits for each option

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Step 3: Add Liquidity​

  • Click the add liquidity button on the top right hand side of the Order Book

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You can also click the Sell button on the toolbar

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Step 4: Connect​

  • The platform will prompt you to connect your wallet
  • Select your preferred wallet (Rabby, MetaMask, etc.) or log in via email, Twitter, or Google
  • Approve the connection request in your wallet

Step 5: Fund Account with USDC on Base​

  • Ensure you have sufficient USDC tokens on the Base Network by checking in the top right hand corner.

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- If you don't have enough USDC, see the guide to depositing from any chain.

Step 6: Create New Deposit​

  • Click the New Deposit button

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Step 7: Deposit USDC to Sell​

  • Click Max to deposit your full USDC balance or type a custom amount

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Step 8: Select Primary Payment Platform​

Choose your preferred platform from the dropdown:

  • Venmo (USD Only)
  • Cash App (USD Only)
  • Zelle (USD Only)
  • Revolut (Multi Currency)
  • Wise (Multi Currency)
  • Mercado Pago (ARS Only)
  • PayPal (Multi Currency)
  • Monzo (GBP Only)
  • N26 (EUR Only)
  • Alipay (CNY Only)
  • Chime (USD Only)
  • Luxon (USD, EUR, GBP)

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Step 9: Enter Payee Details​

Enter your username/account details for the selected platform:

  • Venmo Username
  • Cash App Cashtag
  • Zelle Email
  • Revolut Revtag
  • Wise Wisetag
  • Mercado Pago CVU
  • PayPal.me Username (e.g. yourusername, omit the paypal.me/ prefix)
  • Monzo.me Username
  • N26 IBAN
  • Alipay ID
  • Chime $ChimeSign
  • Luxon Email

🔍 Double-check accuracy — these details are how buyers send you money.

PeerAuth Extension Required for PayPal

PayPal requires identity verification through the PeerAuth browser extension (v0.4.14+). When you select PayPal, you will be prompted to complete extension-based verification before your deposit goes live. This is the same flow used for Wise. Enter your PayPal.me username (no paypal.me/ prefix) — maker identity is now keyed off the normalized PayPal.me username, not your email.

PayPal Business Accounts Not Supported

PayPal Business accounts are not supported. Business accounts redirect to a different page during PeerAuth verification, causing registration to fail silently. Use a personal PayPal account instead.

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Step 10: Set Exchange Rates​

  • Enter how much you want to sell your USDC for in each currency
  • Adjust based on what you observed in Step 2
  • You can see your percentage spread in the middle column
    • Green is above market rate, Grey is close to market rate, and Red is below market rate.

💡 Consider:

  • Market demand
  • Competitive rates
  • Desired profit margin

View the guide on optimal currency conversion rates for more tips.

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Step 11: Add Secondary Payment Platform (Optional)​

  • Click Add Payment in the top right hand corner, if you want to accept multiple payment methods
  • Repeat Steps 8–10 for the new platform

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Step 12: Configure Order Limits (Optional)​

Default order limits are applied automatically:

  • Deposits of 101 USDC or less set the minimum order to roughly 5% of the deposit
  • Deposits above 101 USDC set the minimum order to 101 USDC
  • The maximum order always defaults to the full deposit amount

To override either limit, click Order Limits and enter your own values.

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Step 13: Review your details​

  • Are my tags correct?
  • Are my spreads what I expected?
  • What proceeds can I expect from providing liquidity?

If all details are correct you can continue with your transaction!

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Step 14: Approve & Deposit into Vault​

  • Click Approve
  • After approval, confirm the deposit transaction
  • Gas is sponsored if you sign in with Socials
  • Wait for confirmation (10–20 seconds)

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Step 15: Monitor Your Deposit​

  • Go to the Sell tab
  • You’ll see your active deposit showing:
    • Total amount
    • Remaining balance
    • Accepted currencies/platforms
    • Current status

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💡 Important Tips​

Setting Optimal Rates​

  • Check the Spread column in the Liquidity tab
  • Lower spreads (0.5–1%) = faster fills, less profit
  • Higher spreads (1–3%) = slower fills, more profit

Security Best Practices​

  • Start with a small deposit
  • Never share your wallet seed phrase
  • Always double-check transaction details
  • Use separate payment accounts for ZKP2P for clean tracking

Troubleshooting​

  • Long pending? Check gas — you need ETH on Base
  • Deposit not appearing? Refresh or reconnect wallet
  • Still stuck? Join Peer Telegram for help
  • Want order alerts? Set them up in Notifications and Alerts

➡️ Next: How to Update USDC Conversion Rates