Bullpen

Bullpen is a non-custodial trading terminal that treats Polymarket as one of three connected venues, alongside Hyperliquid perpetuals and Solana spot markets reached through Jupiter Ultra. A trader opens the same account at app.bullpen.fi, on a desktop browser or as a mobile web app, to place Polymarket orders, track positions, and mirror other wallets without switching tools. Bullpen sits at #17 on our attributed-volume leaderboard, with esports as its largest traded category over the last thirty days and LoL: Unicorns Of Love Sexy Edition vs Kaufland Hangry Knights (BO5) - Prime League 1st Division Playoffs its top single market in that window.

The product leans on social features that most Polymarket-only tools skip: a leaderboard for top traders, one-tap sharing of trades to X, and a copy trading system built to mirror wallets that are already winning on Polymarket. A command-line client extends the same order routing to a terminal session, including support for AI agent workflows, for traders who would rather script a Polymarket entry than click through a browser.

A trader opens a Bullpen account and brings or generates Solana and Ethereum-compatible wallets inside the app; Turnkey's infrastructure manages the underlying private keys through an air-gapped setup, and Bullpen describes the model as non-custodial rather than holding trader funds on its own balance sheet. Funding moves in through same-day ACH transfers alongside on-chain deposits, and Polymarket orders settle in pUSD, so USDC needs wrapping before a first buy.

From there, a Polymarket order placed in the app or through the Bullpen CLI routes into Polymarket's own order book, the same book every other builder taps, alongside whatever Hyperliquid or Solana orders the same wallet sends. Average fill size here runs near $90, and 70% of routed volume has opened rather than closed a position, a split worth checking again rather than assuming it stays fixed: a rising share points to more traders entering through Bullpen, a falling one to more exits routed through it.

Settlement itself happens on Polymarket, not inside Bullpen: positions, resolution, and redemption follow Polymarket's own contracts, and the CLI's own positions command can pull that state straight from Polymarket to check against what the app shows.

• Copy trading from wallets

  Mirrors positions from Polymarket wallets a trader chooses to follow, turning wallet discovery into an entry signal instead of a manual lookup.

• Smart money alerts

  Tracks convergence signals and sends trade alerts when tracked wallets move, so a trader can watch specific accounts instead of the whole market.

• CLI for scripted trading

  Places Polymarket orders and pulls positions, wallet flow, and market discovery from a terminal session, with support for AI agent workflows built in.

• Polymarket cashback rewards

  Returns a portion of trading costs through a dedicated cashback program, though the docs do not state the rate a trader earns.

Traders active across multiple chains

Suits anyone already trading Solana tokens or Hyperliquid perps who wants Polymarket positions in the same non-custodial account instead of a separate app.

Copy traders following smart wallets

Fits a trader who would rather mirror a proven Polymarket wallet than build a thesis from scratch, using the built-in wallet tracking to pick who to follow.

Command-line and scripted traders

Works for a trader who wants to script Polymarket discovery, positions, and orders from a terminal instead of clicking through a browser each time.

Mobile-first prediction market bettors

Suits someone checking Polymarket positions from a phone browser rather than downloading a dedicated app, since Bullpen runs as a mobile web app.

Traders wanting a single dashboard

Fits a trader who wants prediction markets, perps, and spot trading visible on one leaderboard and one login rather than three separate accounts.

Bullpen lists its own fee as Variable, without a published rate card or percentage breakdown for Polymarket order routing. The docs describe a Polymarket cashback program that returns a portion of trading costs, but the evidence does not state a rate, so a trader has to check the account's rewards page rather than the docs to know what applies to a specific trade.

Polymarket's own trading fee is set at the market level and applies the same way no matter which builder routes the order, so it says nothing about what Bullpen itself charges on top. Before funding an account, check the live fee display inside the order ticket rather than trusting the homepage's language about avoiding 'extractive platform fees,' which the site ties to its Hyperliquid and Jupiter execution rather than to Polymarket specifically.

• Non-custodial architecture through Turnkey keeps private key control with the trader rather than the platform.
• One account covers Polymarket, Hyperliquid perpetuals, and Solana spot trading, cutting the need to juggle separate apps.
• Copy trading and smart money alerts surface Polymarket wallets worth following without manual wallet-by-wallet lookups.
• A CLI with AI agent skill support lets a trader script Polymarket discovery and order entry outside the browser.
• A Polymarket cashback program returns something on trading costs rather than nothing.
• Available as both a desktop browser terminal and a mobile web app, so positions can be checked away from a desk.

• The operator lists its own fee as Variable and publishes no rate card for Polymarket order routing, so a trader cannot know the cost before placing an order.
• Homepage claims about fast, low-cost execution are demonstrated for Hyperliquid and Jupiter Ultra, not documented for Polymarket order routing specifically.
• Copy trading and smart money alerts mirror other wallets' positions, which can put a trader into a trade after the wallet being copied already moved.
• The cashback program's rate goes unstated, so the return a trader earns depends on account details the docs do not spell out.
• A platform spanning prediction markets, perpetuals, and spot trading means Polymarket-specific features sit alongside a much larger product surface to learn.

Bullpen holds no Polymarket funds itself: the operator describes a non-custodial model in which Turnkey's infrastructure manages private keys inside an air-gapped setup, so trader assets are not pooled on Bullpen's own balance sheet. That distinction matters most if the interface goes down or the company stops operating, since keys held outside a shared custodial wallet are not frozen by a single point of failure.

Attributed flow through this builder code runs back to 2026-04-21, spanning 148 through 2026-09-14, enough history to see the platform through a stretch of live Polymarket markets but not a promise that performance stays the same as volume grows.

Bullpen fits a trader who spreads activity across Polymarket, Hyperliquid, and Solana and would rather run all three from one non-custodial account than juggle separate logins, and who wants copy trading or smart money alerts on top of plain order entry. Order flow here comes from 70 distinct traders a day within a 647-wallet cohort, worth weighing against the $90 average fill when judging the size of the crowd behind it.

It fits less well a trader who wants a Polymarket-only tool with a published, transparent fee schedule, since Variable leaves the rate to check at the order ticket rather than the marketing page. Anyone uninterested in perps, spot trading, or copy trading gains little from the extra surface area.

• What is Bullpen?

  Bullpen is a non-custodial trading terminal that routes Polymarket orders alongside Hyperliquid perpetuals and Solana spot trading from one account, reachable through a desktop browser or a mobile web app rather than a dedicated Polymarket-only client.

• Is Bullpen safe for trading on Polymarket?

  Bullpen describes itself as non-custodial, with Turnkey's infrastructure managing private keys in an air-gapped setup rather than Bullpen pooling trader funds, though a trader still bears the operational risk of the interface and the wallets it generates.

• What fees does Bullpen charge on Polymarket trades?

  The operator lists its fee as Variable without a published rate card, and a Polymarket cashback program returns some cost back, so a trader should check the live order ticket rather than the marketing pages for what applies.

• How much Polymarket volume has Bullpen routed?

  Our index attributes $64M to Bullpen's builder code since 2026-04-21, including $210K over the last seven days and $1.3M over the last thirty, placing it at #17 on the attributed-volume leaderboard.

• How does copy trading work on Bullpen?

  Bullpen's copy trading mirrors positions from Polymarket wallets a trader chooses to follow, using the same smart money tracking the docs describe for spotting wallets worth watching before mirroring their trades.

• Can I trade Polymarket from the command line with Bullpen?

  Yes: the Bullpen CLI places Polymarket orders and pulls positions, wallet flow, and market discovery directly in a terminal session, with support built in for AI agent workflows rather than only manual commands.

• What are the alternatives to Bullpen for trading Polymarket?

  Other builders on the same attributed-volume leaderboard also route Polymarket order flow; comparing #17, $210K, and $90 against a specific alternative helps match a builder to a trader's size and habits.