The uncomfortable truth

You don't have a strategy problem.

You have a feedback loop
problem.

Build → Trade → Measure → Grow → Coach. The loop pros run in every high-performance discipline. Mettle ships it for trading.

14 days free. Cancel anytime before day 14. Export your data anytime.

Live broker sync · CSV fallback for any broker

Webull
IBKR
Tradovate
NinjaTrader
TradeStation
Robinhood
CSV

The loop, every trading day.

Esports pros, surgeons, special-ops teams — every high-performance field runs the same five-step cycle. Most retail traders run none of it.

Build

Design plays with Claude → auto-generate Pine v6 → backtest → save to playbook.

Trade

Pre-market readiness check + behavioral briefing + live signal commentary.

Measure

Every trade scored across entry, stop, exit, and sizing, with emotional tags.

Grow

Execution quality trend. Backtest-vs-live gap closes week over week.

Coach

Claude weekly review grounded in your trades. Technical + psychological.

Everything inside.

One platform for play design, live execution, review, and coaching.

Workbench

Single-play canvas: agentic Coach on the left, spec rail on the right. Talk through a play, get a research-grade backtest, generate Pine — all without leaving the page.

The research surface →

AI Play Builder

Coach learns your spec via tool calls. Plain English in, watermarked Pine v6 + bootstrap-CI backtest out.

AI Weekly Review

Coach-written coaching every Sunday, grounded in your trades, not generic advice.

Execution Scorecard

Per-trade dimensions (entry, stop, exit, sizing) plus emotional tag. Your leaks in dollars.

Live Broker Sync

SnapTrade: Webull, IBKR, Tradovate, TradeStation, Robinhood, NinjaTrader. Auto-tag your fills against the play that fired.

Live PF Strip

Every play tracked vs its backtest CI. Drift turns red before you blow up the edge.

Mental Game + BRI

Daily Behavioral Risk Index from Whoop / Oura. Mental Game Contract on every tier.

Pre-Market AI Briefing

Coach reads your last 5 sessions and flags today's behavioral risks before the bell.

Why not just use your journal?

FeatureMettleTraderVueTraderSyncEdgewonkExcel
Live broker auto-sync
AI play builder → Pine indicator
Live TradingView bridge (read + write)
AI weekly coaching review
4-dimension execution scorecard
Emotional cost in dollars per tradepartial
Pre-market AI behavioral briefing
Backtest-vs-live gap tracker
Why this product exists

Built by a competitive esports player
who got tired of bleeding edge.

In esports, you review your VODs, tag mistakes, drill specific weaknesses, and measure improvement week over week. In retail trading, almost nobody does any of it. Mettle is the feedback loop I wanted for my own trading, shipped.

Daniel K., solo founder · x.com/ddkesports · youtube.com/4kddk

Simple pricing.

Every signup gets a 14-day reverse trial of Trader. Pick your tier on day 14 or fall back to a read-only view. Card required. Export your data anytime.

Apprentice

$59/mo

"I'm building my first edge."

For traders shaping their first system. Build a play, backtest it with research-grade rigor, and journal every trade against it.

Subscribe
  • Workbench: build YOUR plays from neutral primitives
  • Research-grade backtests (bootstrap CI, IS/OOS, walk-forward)
  • Live broker sync via SnapTrade (Webull, IBKR, Schwab, Tradovate, …)
  • Daily BRI (Behavioral Risk Index) + Whoop / Oura signal
  • Weekly review with tag matrix and execution scorecard
  • 10 playbook setups, 10 custom tags
Most Popular

Trader

$129/mo

"I'm running my system daily."

For traders executing the loop every session. Adds the AI Coach that remembers every play, the live Market Assistant, and unlimited stack-building.

Start 14-day trial
  • Everything in Apprentice
  • AI Coach: agentic Workbench Coach with per-play memory
  • Live Market Assistant: in-session TV bridge with discipline anchor
  • Pre-market AI briefing + weekly reflection prompts
  • /system: living trading-system doc edited by Coach
  • Auto-tag: TV signals → trades.intendedPlay end-to-end
  • Live PF strip: every play tracked vs its backtest CI
  • Unlimited plays, tags, setups, accountability partners

Master

$299/mo

"I'm scaling and sharing my edge."

For traders publishing what they trust. Vault-delivered Pine indicators, full read/write API, priority support.

Subscribe
  • Everything in Trader
  • Indicator Builder: watermarked Pine v6 generation on demand
  • Vault delivery: indicators publish invite-only to your TradingView
  • Unlimited Workbench queries (Opus, day-capped fair-use)
  • Read/write API access
  • Priority support

Questions traders ask.

How is this different from TradeZella or TraderSync?

Journals capture data. Mettle is the full feedback loop: AI designs your plays, the journal scores every trade, live signals auto-tag against the play that fired, and the coach writes your weekly review grounded in your own data. Capture compounds into improvement.

I already have my own indicators. Does Mettle work with those?

Yes. Paste your Pine in Settings → Indicators. You keep the source, Mettle catalogs it and wires your TradingView alerts through to plays + journal + coaching. The Master tier is for traders who want to generate watermarked Pine on demand and publish via the vault. Not a requirement.

What's the "vault" on the Master tier?

Indicators the Workbench generates publish to your TradingView as invite-only private scripts. You use them on your charts but the Pine source stays licensed to us. If you cancel, the invite is revoked. This keeps indicator generation sustainable. Indicators you import yourself aren't vaulted. They're yours.

Does the AI actually know trading?

Claude Sonnet plus your real trades, playbook, signals, and emotional tags. Grounded in Mark Douglas, Jared Tendler, Brett Steenbarger. Not generic LLM advice.

What brokers do you support?

Live sync via SnapTrade: Webull, IBKR, Tradovate, TradeStation, Robinhood, NinjaTrader, and more. Any broker via CSV.

How does the trial work?

Every signup starts with a 14-day reverse trial of Trader — full mid-tier access from day one. Card required. On day 14 you pick the tier that fits (Apprentice, Trader, Master) or fall back to a read-only view of your own data. Cancel any time before day 14 for $0.

Do I own my data?

Yes. Export to CSV anytime. Cancel and your data comes with you. Indicators you imported into Mettle remain yours; Mettle-generated indicators are licensed (see the Indicator Licence).

What if I'm not profitable yet?

That's who this is for. If you have an edge, we show where you're leaking it. If you don't, the Workbench Edge Builder helps you research one.

Run the loop.
Every trading day.

Every session without a structured review is data you can't get back.

Start your 14-day trial

Card required. Cancel any time before day 14. Your data stays yours.