MetaMask

MetaMask is Consensys's self-custodial crypto wallet, used for holding and swapping tokens across EVM networks, that has folded Polymarket prediction market trading into its mobile app. Rather than a dedicated trading terminal, it treats prediction markets as one more asset class alongside swaps, perpetuals and card spending, aimed at the wallet's existing base of mobile users rather than professional desk traders.

Inside the app, traders browse markets across sports, politics, culture and crypto and can open a position in two taps without a separate wallet authentication step. Funding uses any token on any EVM network or trades directly from wallet balances, with winnings paid directly back to that same wallet once a market resolves, and MetaMask states the service is unavailable to users in Germany.

A trader opens the prediction markets tab inside the MetaMask mobile app using an existing wallet, no separate signup or identity verification required. Positions can be funded with any token on any EVM network, converted automatically, or traded straight from tokens already sitting in the wallet, so there is no separate deposit-and-wait step before a trade goes live.

Once placed, the order reaches Polymarket's own order book rather than a pool run by MetaMask itself; the wallet is a routing layer into the same shared liquidity every Polymarket-linked app draws from. Prices, order matching and resolution all happen on Polymarket's side, with MetaMask presenting the market and forwarding the trade.

MetaMask never takes custody of trading funds beyond what the wallet already holds: positions and payouts settle to the same self-custodial address a trader controls, and the operator states winnings land back in that wallet as soon as a market resolves. There is no intermediate account to withdraw from and no custodial balance held on a trader's behalf.

• Two-tap trade execution

  Markets open and trades confirm in two taps from inside the mobile app, cutting the steps between spotting a market and having a position on it.

• Funds from any EVM token

  A position can be funded with any token on any EVM network or traded directly from existing wallet balances, skipping a dedicated deposit step.

• Skips KYC onboarding

  Trading starts without an identity check, so an existing MetaMask user can move from browsing a market to holding a position without a separate onboarding flow.

• Self-custodial payout settlement

  Winnings settle directly to the same wallet address once a market resolves, with no separate account to withdraw funds from.

Existing MetaMask mobile users

Traders who already keep funds in MetaMask can open a prediction market position without moving assets to a separate app or exchange first.

Casual event bettors

Someone who wants to react to a headline with a small stake benefits from two-tap trading and funding straight from wallet balances.

Traders without KYC documents

Anyone who wants to place a prediction market trade without submitting identity documents can do so directly from an existing wallet.

Multi-chain EVM holders

Traders holding tokens across several EVM networks can fund a position without first consolidating balances onto one chain.

MetaMask advertises a flat 4% fee for prediction market trading. Its own site raises fees as a question in the FAQ, but the pages captured here do not show the answer, so a trader has to take the headline rate on faith rather than see a worked example of what a trade costs.

Separate from this, every Polymarket market carries its own trading fee that applies the same way regardless of which app routed the order, so it plays no part in weighing MetaMask against another entry point. Before funding a position, check the rate shown on the trade confirmation screen against $344 to see what it means for a typical position size.

• Trades and winnings settle directly to a self-custodial wallet, so funds never sit in a separate custodial balance.
• Funding accepts any token on any EVM network or trades straight from existing wallet balances, skipping a dedicated deposit step.
• Two-tap execution and no identity verification step let an existing MetaMask user start trading with minimal friction.
• The wallet already handles swaps, cards and other crypto activity, so prediction markets sit inside a tool many traders already use daily.
• Order flow routes into Polymarket's own market, so pricing and resolution follow the same mechanics as trading there directly.

• MetaMask states its own prediction markets are unavailable to traders in Germany, cutting off that jurisdiction entirely.
• The captured pages raise a fees FAQ but never publish the underlying rate structure, leaving the advertised 4% figure unexplained.
• Prediction market access is built around MetaMask Mobile, so a trader working from desktop has to go through the wallet's mobile app instead.
• The two-tap flow is built for speed rather than control, with the operator's own marketing emphasizing quick entry over deeper market tools.

Funds stay in the trader's own wallet throughout: positions and payouts settle to the same self-custodial address a trader already controls, so there is no separate custodial balance to trust or withdraw from. MetaMask does not publish a fee schedule for prediction market trading on the pages captured here, so a trader confirms cost only at the trade screen rather than from a documented rate table.

Beyond that, exposure is ordinary wallet risk: whatever secures the MetaMask app and its keys also secures every prediction market position routed through it, and losing access to that wallet means losing access to those positions too.

MetaMask turns an already-installed wallet into a prediction market entry point, which suits traders who want to act on a headline without opening a separate account or moving funds through an exchange first. The advertised 4% rate and the absence of a published fee breakdown mean cost-conscious traders should confirm what a trade charges before sizing up.

Anyone trading from Germany is excluded outright, and traders who want order-book control, deep market tools or desk-sized execution are better served by a dedicated trading terminal than by a wallet that treats prediction markets as one more feature among many.

• What is MetaMask's prediction markets feature?

  It is a mobile feature inside the MetaMask wallet that lets traders open Polymarket-powered prediction market positions on sports, politics, culture and crypto without leaving the wallet app or opening a separate account.

• Is MetaMask safe for prediction market trading?

  Trades and winnings settle to the trader's own self-custodial wallet rather than a balance MetaMask holds, so the operational risk is the same as securing that wallet's keys and access.

• What does MetaMask charge for prediction market trades?

  MetaMask advertises a flat 4% rate but does not publish a fee breakdown on the pages captured here, so a trader should check the exact charge shown at the trade confirmation screen.

• Can I trade prediction markets on MetaMask outside the mobile app?

  The prediction markets feature is built for MetaMask Mobile; the operator's own pages point traders to opening the mobile app rather than to a desktop or browser version.

• What are the alternatives to MetaMask for trading on Polymarket?

  Traders can route the same Polymarket order book through other builders; comparing #5, $344 and 4% across a few of them shows which one matches a given trading style before committing funds.

• Does MetaMask hold custody of prediction market funds?

  No. Positions and payouts settle directly to the trader's own self-custodial wallet address, and winnings arrive there as soon as a market resolves, with no separate custodial balance in between.

• Who uses MetaMask for prediction markets?

  Mostly traders who already hold funds in a MetaMask wallet and want to act on a market quickly; the buy share of routed volume sits at 80.4%, indicating how much flow opens rather than closes positions.