Polymarket Predict.fun Limitless Kalshi

Agent harness · Polymarket live · Predict.fun beta

Prediction-market agents
that show their work.

Each PMAXIS bot watches the market, researches, sizes a trade, passes four risk checks and executes, and writes down why at every step.

Decision trace replay
Market
Research
Signal
Risk gate
Execute
Settle
    Simulated replay of real log steps. Wallets and figures are illustrative.

    How it works

    Four stages between a hunch and a filled order.

    Thinking and acting are kept apart. The research stage can read anything but can't touch money; the stages that touch money follow fixed rules.

    ThinksActs

    01 · Research

    Reads the market like an analyst.

    An LLM agent studies prices, order books, trader track records and resolution rules. Its output is a strategy blueprint: what to trade, what triggers it, and the limits it must respect.

    Has no access to any wallet key.

    blueprint {
      trigger        WHALE_COPY
      targets        2 wallets
      max_position   $200
      abort_if_spread > 200 bps
    }

    02 · Signal

    Waits for the moment.

    Watchers stream live order books and whale fills. When a blueprint's trigger fires, the trade is sized against the bot's bankroll, scaled to how big the whale's bet was, and turned into an order intent.

    intent {
      side        BUY YES
      notional    $75
      limit       0.42
      ttl         300s
    }

    03 · Execution

    Checks first, then acts.

    Four risk checks run before a key is touched. If all four pass, the order is signed in memory and sent straight to the venue's order book. If one fails, nothing is sent and the reason is logged.

    risk_gate  ✓ cash  ✓ spread  ✓ expiry  ✓ exposure
    order      fill-or-kill · EIP-712 signed

    04 · Settlement

    Closes the loop.

    Winning positions are sold near $1 or redeemed when the market resolves. Fees are collected in batches, designed so bot wallets never need to hold gas.

    position  resolved YES
    exit      sold @ 0.995
    fees      swept in batch

    Bots

    Two kinds of bot. One venue each.

    Every bot is a named instance with its own wallet, pinned to one venue. Pick what it's for when you create it.

    Copy trading

    Follows traders who have earned it.

    • Pick wallets by their real track record
    • Size each copy by how big the whale bet, or by a fixed amount
    • Guards for slippage, stale fills and sudden price swings
    • Caps on position size, open positions and cash kept in reserve
    • Every skipped trade is logged with its reason
    COPIED0x7a3f…c21BUY YES $75 @ 42¢
    COPIED0xd8da…045BUY NO $50 @ 57¢
    Research

    An analyst that never touches your money.

    • Ask questions in chat; the agent answers with sources and numbers
    • Live order books for the markets you pin
    • Trade tape tagged with each trader's real record
    • Resolution rules shown verbatim, vague wording flagged
    • Cannot place orders, by design
    MarketProb24hBar
    Fed cut in December62.5%▲4.1%
    BTC above $150k18.0%▼6.2%
    Hike–Pause–Hike34.5%0.8%

    Start in Paper. Paper bots make every decision against live order books but never send an order. Switch to Live when the log has convinced you.

    What the agent can do

    Reads the market the way a trader would.

    Every answer is built from live market data, not guesses.

    Markets

    • Market search
    • Trending markets
    • Live order books
    • Price history
    • Trade tape
    • Related markets
    • Resolution rules
    • Public sentiment
    • Category trends

    Traders

    • Whale tracking
    • Smart money
    • Top holders
    • Trader discovery
    • Track records
    • Trading style
    • Category edge
    • Portfolio view
    • Wallet comparison

    Strategy

    • Copy-trade backtests
    • Strategy blueprints
    • Position sizing

    Plug in more sources.

    • PMAXIS Hunter
    • FRED macro
    • Binance
    • Brave Search
    • Weather

    Safety

    Built around what a bot isn't allowed to do.

    Risk gate · runs before every order

    • Cash on hand covers the whole order.No borrowing against open positions.
    • The spread is inside the strategy's limit.Thin, blown-out books are skipped.
    • The market isn't resolving in the next 30 minutes.No last-second coin flips.
    • Total exposure stays under the cap.Existing position plus the new order.

    4 / 4 passed · order signed

    • One wallet per bot

      Keys are encrypted at rest and decrypted in memory only to sign.

    • Research never sees a key

      The agent that reads the internet has no path to a private key.

    • Sign in with your wallet

      You only ever see and control the bots your wallet created.

    • Leave with your keys

      Export a bot's key at any time. It's then disconnected from automation for good.

    Venues

    Where bots trade.

    Each bot is pinned to one venue and its chain, so funds and orders never cross venues by accident.

    VenueNetworkCollateralStatus
    PolymarketPolygonUSDCLive
    Predict.funBNB ChainUSDTBeta
    LimitlessBaseUSDCExploring
    KalshiRegulated exchangeUSDExploring

    Under the hood

    One gateway. Every stage in-process.

    The agent, the copy engine, the risk gate and the signer run side by side in one gateway, so a decision reaches the venue without hopping between services. Postgres keeps bots, fills and chat; Redis carries signals.

    • Fastify
    • LangGraph
    • Next.js
    • PostgreSQL
    • Redis Streams
    • EIP-712
    Web deskbrowser

    API gateway

    Research agent Copy engine Risk gate Signer
    Postgres · Redisstate and signals
    Venuesorder books

    Start a bot in Paper mode.

    Connect your wallet, pick a venue and a bot type, and read its log before you trust it with money.

    Open the desk