SignalStack

What it is

SignalStack is an order router. You connect a broker or exchange, configure a "stack" — the order SignalStack should place when an alert arrives — test it, and paste the resulting webhook URL and payload into the platform that fires your alerts. From then on an alert becomes an order in your account without you at the screen. It does not build, scan or backtest anything, and its own disclosure says it offers no alerts, signals, research or advice of its own.

It is a TrendSpider company, and the plumbing behind TrendSpider's strategy bots: TrendSpider subscribers get a free SignalStack account for manual orders and pay SignalStack separately once automated execution passes five orders a month. It is sold on its own terms as well, to anyone whose alerts come from TradingView, Zapier, IFTTT or a script of their own.

Pricing

Metered by signals — orders successfully delivered to a live account — rather than by connected accounts. Free gives 5 a month with no card; Basic is $27/month for 50, Premium $97 for 250 and Pro $340 for 1,000, with annual billing at $270, $970 and $3,470. Paper signals and broker connections are unlimited on every plan. Unused signals expire monthly; upgrades credit unused signals against the price; there are no refunds.

The arithmetic matters more than the tier names. Fifty signals is two to three round trips a week, so a strategy that enters and exits daily on one ticker outgrows Basic in a month, and one that trades several tickers intraday lands on Pro.

The pricing page carries a dormant "40% off for 12 months" promotion banner, switched off at the time of checking; the figures above are the ones it displays.

Data & coverage

About 30 integrations: US brokers including Alpaca, Charles Schwab, E*TRADE, Interactive Brokers, Lightspeed, Lime, Public.com, Robinhood, tastytrade, TradeStation, Tradier and Webull; futures through Tradovate, Ironbeam and Optimus Futures; forex and CFDs through Oanda, Forex.com, FXOpen and Capital.com; Trading212; MetaTrader 5 and cTrader bridges; and crypto exchanges from Coinbase and Kraken to Binance and Bybit. Which asset classes and order types work depends on the broker — the integrations page lists them per connection, from market and limit up to stop-limit and OCO.

SignalStack supplies no market data; prices come from your signal source and fills from your broker.

Integrations

Inbound webhooks are the interface, with separate test webhooks that check whether a signal arrives and is formatted correctly before anything reaches a live account, and a log of what came in. Documented signal sources are TradingView alerts, TrendSpider alerts and strategy bots, Zapier and IFTTT. SignalStack Connect, a developer API priced per connected end-user account, is sold separately to companies building order routing into their own apps.

Limitations

• Nothing upstream of the alert. No editor, no backtester, no performance reporting: whether the rule is any good is decided on the platform that sends it.
• Metering punishes active strategies. A signal-count bill rises with trade frequency, which flat per-account pricing elsewhere does not.
• The terms say the service is controlled from the US and makes no promise it is appropriate or available elsewhere, even though several integrated brokers are not American.
• Liability is capped at $100 or the last 12 months' fees, whichever is lower — a dropped alert or a failed order is your loss to carry.
• Robinhood is listed, and Robinhood's terms cut the other way. Its help-centre article on third-party connections, read on 9 October 2026, says trading APIs may not be linked to an account without Robinhood's written authorization and third-party applications may not take action on the app. SignalStack's own page for the Robinhood connection was not reachable that day, so what it says about authorization is unverified; ask both companies first.

Alternatives

TradersPost does the same job priced by accounts and asset classes instead of signals, which favours busy strategies on one or two accounts. TrendSpider if you want the charting, scanning and backtesting in front of SignalStack from the same company. Option Alpha if the strategy is an options spread built and run in one place.