Reactor Review: Should You Let Its Agents Trade?

Reactor is a trading interface for building agents from plain-language strategy prompts or signal nodes. You can combine indicators such as RSI and EMA with AND or OR logic, then watch the agent make decisions in a sandbox. Reactor says that sandbox uses a $10,000 virtual balance at live prices, logs decisions and derives performance from fills. After 14 days, an agent can graduate to live trading; published records can show profit and loss, drawdown and a wallet that others can check. The app also describes followers copying an agent.

This setup gives you a way to review how a set of rules behaved in simulated conditions. It does not prove the strategy will make money with real orders: fills, costs, liquidity and market conditions can differ. Reactor’s displayed leaderboard and sample agent results should be treated as examples of the product’s presentation, not evidence of future performance.

You can build and test an agent without connecting a wallet. Live use is different: Reactor says orders leave from a connected wallet, and its process describes an agent graduating to a wallet of its own. The app does not explain whether that wallet is self-custodied, how keys are handled, or what permissions are required. Treat that as an important unresolved question before you authorize trading.

Reactor does not publish its trading fees, spreads, funding costs or any fees charged for using the interface. These costs can affect automated trading results, particularly for frequent trades or leveraged positions. For swaps, the app’s example shows a rate, estimated time and network fee before you confirm; the displayed figures are sample values, not a standing price. Check the final quote and any venue charges for each transaction, and account for possible network fees before moving funds.

Reactor provides a visible sandbox record and says users can inspect agent decisions and published performance. That transparency can help you assess a strategy, but it is not the same as an independent audit of the app or its smart contracts. Reactor does not publish an audit, licence, or clear custody explanation in the app details shown. Those omissions matter more once an agent can place live orders or manage a wallet.

The app lists Hyperliquid, Aster and Lighter as order venues, with Forknet also appearing in its venue selector. Ethereum and Arbitrum are listed as supported chains, but Reactor does not clarify how assets, permissions or execution are divided among them. Before live use, verify which venue your agent will trade on, what wallet permissions it needs, and whether you can revoke them. Do not assume that a public profit-and-loss record means the execution setup is safe.

The app lets you look around without signing in, and Reactor says you can build and prove agents without a wallet. When you are ready to trade live, it requires a connected wallet. The strategy builder offers text prompts and editable signal nodes, while the interface presents market data, order books and an order ticket. Reactor also describes an AI Gateway with several model options for strategy decisions; it does not explain model pricing or how model choice affects results.

Sandbox agents update against live prices but use virtual money. Live orders are directed to the listed trading venues, so execution speed and fills depend on the venue and market conditions. The app gives a sample swap estimate of roughly two minutes, but that does not establish the time needed for a trade or withdrawal. Mobile support, supported wallet brands and live execution timing are not explained.

Reactor’s main limitation is the gap between its detailed strategy demonstrations and the financial information a cautious user needs. It does not publish trading fees, audit status, licence, team details or a clear custody model in the app details shown. It also does not spell out the venue-by-venue chain support, withdrawal arrangements, or how agent wallets are controlled. These are questions to resolve before moving beyond a virtual balance.

The 14-day test period is a waiting gate, not a safety guarantee. A strategy can perform well in a sandbox and still lose money live, especially when leverage is involved; the interface itself shows a 40x venue example. Start with simple rules, check how losses and position sizes are handled, and avoid risking money you cannot afford to lose. If you need documented costs, independently reviewed security or straightforward manual trading, choose a service that clearly publishes those details.