Chrome Extension · Free to start
Same rules. Every chart. Structured read in seconds.
Paste your trading criteria once — Weinstein stages, your breakout checklist, any framework. Otta Charts scans the chart you're looking at and returns trend, setup, volume, risk, and actionability in a consistent format you can act on.
Free with your own OpenAI or Claude key. No credit card required.
What Otta Charts gives you
Trend Stage
Stage 2 — Advancing
Price above 50 and 200 SMA with bullish alignment. 30-week MA trending up.
Setup
Breakout from base
Tight consolidation under resistance with improving price structure.
Volume
Constructive
Volume contracted during base formation. Should expand on breakout confirmation.
Risk Map
~4% to invalidation
Stop below base support. Risk width within normal parameters for this setup.
Actionability
Actionable on confirmed breakout above resistance
Generated from your ruleset logic, not Otta Charts' opinion.
Your rules. Not ours.
Most tools give you black-box signals. Otta Charts runs your framework — Stan Weinstein stages, your own momentum criteria, anything you write — on the chart you're already looking at and returns the same structured format every time.
No opinions. No recommendations. Just your system, applied consistently.
Apply the same logic to every chart
Reduce emotional overrides at scan time
Compare setups in a repeatable format
Know when a chart is actionable and when it is not
You built rules for a reason. But when you're staring at a chart, the rules bend. You see the volume you want to see. You call the stage what you hope it is. By the time you realize you overrode your own system, the trade is already on.
Otta Charts removes you from the read. Your rules run on the chart exactly as written — same structured output every time, so you can compare setups honestly instead of rationalizing them.
How it works
01
Choose a ruleset
Start with the built-in Stan Weinstein framework or paste your own criteria. Rules are stored locally in the extension.
02
Open any supported chart
Navigate to a chart on TradingView, Finviz, or a brokerage you already use. Click the Otta Charts icon.
03
Get structured analysis in seconds
Otta Charts returns trend stage, setup quality, volume pattern, risk map, and actionability. Every scan, the same format.
Built for traders with a system
Consistent output format
Every scan returns the same structured fields: trend stage, setup, base structure, volume, risk map, and actionability. Easy to compare across charts.
Bring your own API key
Connect your own OpenAI or Claude key. Your charts go directly to the provider — Otta Charts' servers never see the image.
100 hosted scans/month (Pro)
No API key setup needed. Pro uses Otta Charts' key for up to 100 scans per month, with unlimited BYOK scans always available.
Auto-scan mode (Pro)
Set a scan interval and Otta Charts automatically rescans the chart in view. Works as you review charts manually.
Multiple rulesets (Pro)
Save named rulesets for different setups — momentum, stage analysis, breakout criteria — synced across devices.
Chart chat (Pro)
Ask follow-up questions about any scan result. Uses your own API key — Otta Charts' key is never involved.
Simple pricing
Free with your own API key. Pro turns it into a workflow — auto-scan the chart in view, synced rulesets, and 100 hosted scans a month when you don't want to set up a key.
Early access pricing — likely to increase as automation and watchlist workflows expand.