opentradex-buy

name	opentradex-buy
description	Open a paper long position on any enabled rail — Kalshi, Polymarket, Alpaca, or Coinbase. Invoke when the user says "buy", "go long", "paper long", "yes on <market>", or confirms a suggested entry. Requires rail, symbol, qty; price is optional (defaults to a mid-market mark).
allowed-tools	Bash(node *tradex.js buy:*), Bash(node *tradex.js scan:*), Bash(node *tradex.js status:*), Bash(node *tradex.js positions:*)
argument-hint	<rail> <symbol> <qty> [price]

OpenTradex — Paper Buy

Open a long paper position.

User arguments: $ARGUMENTS — expected form <rail> <symbol> <qty> [price].

Flow

1. Validate the user gave you all four pieces (rail, symbol, qty, optional price). If anything is missing, ask for exactly what's missing in one short sentence — don't re-ask fields the user already gave.
2. Pre-trade risk check: quote the open position count and current exposure: !node "${CLAUDE_PLUGIN_ROOT}/bin/tradex.js" risk If openPositions ≥ 5 or dailyTotal ≤ -50, warn the user and confirm before proceeding.
3. Place the paper buy: !node "${CLAUDE_PLUGIN_ROOT}/bin/tradex.js" buy $ARGUMENTS
4. Echo the fill price, position id, and remind the user: "To close: /opentradex-trade:sell <position-id>."

Rules

• This is paper-only. Never claim real fills.
• Price units: prediction markets (Kalshi/Polymarket) use 0–1 (probability); stocks (Alpaca) and crypto (Coinbase) use raw currency.
• If the rail isn't enabled, tell the user to run /opentradex-trade:onboard first.