拓展阅读 / Jev Trader：交易决策工程

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Jev Trader — Product Spec

One line

A live public dashboard showing an AI make a real trade decision on Monad every 300 ms block.

What it is

A single-page web app. A TypeSafe "Jev" model (a System One model: no text output, returns typed decisions with probabilities in ~100 ms) watches the MON-USDC order book on Kuru, Monad's on-chain exchange. Every block (300 ms) it answers one question: buy or sell. Every block is a real order from a real wallet, confirmed in the same block. The page shows this happening live.

Who it is for

1. Crypto Twitter, via a 20-second screen-recorded clip and a link. They have three seconds to get it.

2. People who click through and watch for five minutes. They should be able to verify everything: wallet, transactions, cost.

The message

Primary: "This AI makes a real trade decision every 300 ms on Monad." Secondary punchline: "The AI costs less than the gas." (Jev inference for an hour ≈ $0.20; gas for the same hour ≈ $2–5.) Nothing on screen may compete with these two lines.

Design principles

• One screen. No navigation, no settings, no login.

• Motion is the content. Something visibly changes every 300 ms, and the viewer should feel the rhythm of the chain.

• Everything shown is real and verifiable. Wallet address, tx hashes, block heights link to the explorer.

• Legible in a compressed 1080p clip and at phone width. Big numbers, high contrast, no thin type.

• Restraint. Dark trading-desk aesthetic. Green = buy, red = sell, neutral grey = hold. One accent color (Monad purple is acceptable). No gradients, no decorative charts.

• Honest. Every block trades, so spread and gas bleed are visible. Losses are shown as plainly as gains. A "stand-in model" badge appears when real Jev is not connected.

Layout (desktop 16:9 primary; mobile stacks vertically in the same order)

1. Header strip

   • Title (working name: Jev Trader), live indicator dot, "block 105,416,201" ticking every 300 ms.

   • Wallet address, truncated, with copy and explorer link.

   • Model badge: "jev-latest" (or "stand-in" in amber).

   • Uptime.

2. Hero: price chart

   • MON/USDC mid price, rolling window (default last 5 minutes ≈ 1,000 blocks; toggle 1m / 5m / 15m).

   • A marker on every fill: green up-triangle for buy, red down-triangle for sell. Nearly every block has one.

   • Current price in large type at the right edge of the line. Position size and side shown as a small pill (e.g. "long 12 MON").

3. Decision panel (the flicker; this is the signature element)

   • Updates every block. Shows the decision for the current block.

   • Two-way probability bar: buy vs sell with percentages. The chosen side is highlighted. (This is also the "will price go up" number: buy probability = up probability.)

   • Decision latency in ms for this block (e.g. "94 ms").

   • A tiny per-block tick strip along the bottom: the last 60 blocks as small squares, green/red for buy/sell, amber for "late" (model missed the block, no trade). Scrolls left as blocks arrive.

4. Counters row (six tiles, tabular numerals, all live)

   • Blocks seen

   • Decisions made

   • Trades executed

   • Jev spend (USD, four decimals)

   • Gas spend (MON and USD)

   • P&L (MON and %). Red or green. No smoothing, no hiding.

   Jev spend and gas spend sit adjacent so the "AI costs less than gas" comparison is visual without a caption.

5. Trade tape

   • Last 12 fills: block, side, size, price, decision latency, tx hash (link).

   • New rows slide in from the top.

6. Footer

   • One-line disclaimer: experimental demo, tiny bankroll, not financial advice, the model is not trying to be profitable.

   • Credits and links: TypeSafe (Jev), Monad, Kuru, source repo. Credit, not co-branding.

States

• Live: everything above.

• Model late: block ticks amber, decision panel shows "late — held", counter for late blocks increments.

• RPC disconnected: header dot turns red, chart freezes with a "reconnecting" overlay, counters stop.

• Out of funds / paused: banner across the hero, decisions continue in dry-run (shown greyed) but no fills.

• Replay: plays back a recorded session at real speed, clearly labelled "replay", for recording clips or when markets are dead.

• Stand-in model: amber badge in header, otherwise identical.

Interactions (deliberately few)

• Hover a chart marker: tooltip with block, side, size, price, probabilities at that block.

• Click tx hash or block: opens explorer.

• Click wallet: copies address.

• Chart window toggle.

• Nothing else. No trading controls for viewers.

Live data shape (delivered over a server stream, one event per block)

• block, timestamp

• mid, bestBid, bestAsk, spread

• decision: action (buy | sell; hold only when late), probabilities {buy, sell, hold}, upIn10 (= buy probability), latencyMs, late (bool)

• fill (optional): side, size, price, txHash, gasMon

• position: side, size, entryPrice, unrealizedMon

• totals: blocks, decisions, trades, jevUsd, gasMon, gasUsd, pnlMon, pnlPct, lateBlocks

Non-goals

• No comparison with other models. One model, one market.

• No memecoins, no launchpad feed.

• No user wallets, no user trading, no accounts.

• No historical analytics, no backtests, no strategy explanation.

• No chat, no text output from the model anywhere.

Technical constraints the design must respect

• 3.3 updates per second, indefinitely. Animations must be cheap: transforms and opacity only, no layout thrash.

• Constantly changing numbers need tabular (fixed-width) numerals so tiles do not jitter.

• Must stay legible with a fill on nearly every block: markers must not smear into a solid band at 3 per second (thin markers, or aggregate when zoomed out).

• Screen-recordable: no elements that only make sense with hover.

• Works at 390 px wide.

Success criterion

A viewer with no context, watching a 20-second clip on a phone with the sound off, understands within three seconds that an AI is trading on a blockchain every fraction of a second, and can see what it costs. Then they share it.