Tick-by-tick backtesting.
In your browser.
With StrategyTune.

• →Market replay and manual backtesting: starts in one click, no login
• →Indicators, signals, and strategies, written with your AI or in the code editor
• →Automated backtests and AI research over the built-in MCP server

Like a video player. For markets.

Play, pause, jump forward and back without restarting. Drag the timeline to any moment.

• →Jump, don't restart
• →Save your session, resume it on any device
• →Try it: grab the timeline on the right

Real ticks. Real spreads.

Not a bar replay: candles build tick by tick, and the chart always shows the market exactly as it was at that moment. No look-ahead, spreads widening and tightening the way they did live.

• →Candles from recorded bid/ask ticks; exchange-traded products chart from real trades
• →Orders fill at the recorded bid and ask, on every instrument
• →Ticks power every speed, 1× to 50,000×

Automate parts of your strategy

Filters and signals are their own script type, next to indicators and strategies. They mark the parts your strategy actually cares about on the backtesting timeline: periods where your conditions hold, moments where something fired.

• →Jump straight to the marked spots and skip the quiet stretches
• →Confirm a rule behaves on history before you automate it
• →Create with your AI, then reuse in a strategy script: automation builds piece by piece

Run automated backtests.
Let your AI research.

The same engine does both. It runs your saved strategy scripts, and it runs code your AI writes, collecting custom statistics and logs to answer any research question.

• →A year of tick-by-tick data takes seconds
• →Strategy scripts finish with a full report
• →Research results go back to your AI: the answer lands in the chat

It's the AI you already have

Claude, ChatGPT or any MCP client connects in a minute and drives all of it. No AI fees from us. Every script stays code you can open and edit.