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Create a Telegram bot via @BotFather → copy the BOT TOKEN.\n// 2. Get your numeric chat id (message the bot, then read getUpdates,\n// or use @userinfobot).\n// 3. On val.town: New → Cron val → paste this whole file.\n// 4. Add Environment Variables (Settings → Environment Variables):\n// TRADIER_KEY (required — your Tradier production token)\n// TELEGRAM_BOT_TOKEN (required)\n// TELEGRAM_CHAT_ID (required)\n// Optional overrides (defaults match the dashboard):\n// WATCHLIST, WIDTHS, DTE_MIN, DTE_MAX, OTM_MIN, OTM_MAX,\n// MIN_PREM_PCT, MAX_BID_ASK, DAY_DOWN_PCT, DAY_FILTER,\n// MAX_TICKERS, MAX_EXPS, FORCE\n// 5. Set the cron schedule to: 0 * * * * (every hour)\n// The code itself only does work at 10:00/12:00/14:00/16:00 ET on\n// weekdays while the US market is open — i.e. every ~2 hours.\n// Set FORCE=true to bypass the time gate for a one-off test run.\n// ════════════════════════════════════════════════════════════════════\n\nconst TRADIER = \"https://api.tradier.com/v1\";\n\nfunction env(key, fallback) {\n try {\n const v = Deno.env.get(key);\n return v === undefined || v === null || v === \"\" ? fallback : v;\n } catch {\n return fallback;\n }\n}\n\n// Default watchlist = first ~30 names from the dashboard. Override with WATCHLIST.\nconst DEFAULT_WATCHLIST =\n \"RSG,ARM,ET,CBOE,HII,CW,FERG,PRIM,EQT,FCX,WM,CP,STRL,CDRE,ROL,NNN,NFG,DE,SYK,WHD,NI,RBC,RRX,OKE,COLD,CACI,NVO,EME,WY,VMC\";\n\nconst CFG = {\n watchlist: env(\"WATCHLIST\", DEFAULT_WATCHLIST)\n .split(\",\").map((s) => s.trim().toUpperCase()).filter(Boolean),\n widths: env(\"WIDTHS\", \"2,5,10,20\").split(\",\").map(Number).filter((w) =>\n w > 0\n ),\n dteMin: +env(\"DTE_MIN\", \"21\"),\n dteMax: +env(\"DTE_MAX\", \"180\"),\n otmMin: +env(\"OTM_MIN\", \"15\") / 100,\n otmMax: +env(\"OTM_MAX\", \"40\") / 100,\n minPremPct: +env(\"MIN_PREM_PCT\", \"28\") / 100,\n maxBidAsk: +env(\"MAX_BID_ASK\", \"0.50\"),\n dayDown: +env(\"DAY_DOWN_PCT\", \"1.0\"),\n dayFilter: env(\"DAY_FILTER\", \"true\") !== \"false\",\n maxTickers: +env(\"MAX_TICKERS\", \"40\"),\n maxExps: +env(\"MAX_EXPS\", \"1\"),\n force: env(\"FORCE\", \"false\") === \"true\",\n};\n\n// US market state in Eastern time (handles DST automatically).\nfunction marketState(now = new Date()) {\n const et = new Date(\n now.toLocaleString(\"en-US\", { timeZone: \"America/New_York\" }),\n );\n const day = et.getDay();\n const mins = et.getHours() * 60 + et.getMinutes();\n const open = day >= 1 && day <= 5 && mins >= 570 && mins < 960; // 9:30–16:00 ET\n return { et, open, hour: et.getHours() };\n}\n\n// Scan only on a clean 2-hour cadence inside market hours.\nconst SCAN_HOURS = [10, 12, 14, 16];\n\nasync function tradier(path, params) {\n const url = new URL(TRADIER + path);\n Object.entries(params || {}).forEach(([k, v]) => url.searchParams.set(k, v));\n const res = await fetch(url.toString(), {\n headers: {\n Authorization: `Bearer ${env(\"TRADIER_KEY\")}`,\n Accept: \"application/json\",\n },\n });\n if (!res.ok) throw new Error(`Tradier ${res.status}: ${path}`);\n return res.json();\n}\n\nasync function scanTicker(ticker) {\n const today = new Date();\n const q = await tradier(\"/markets/quotes\", {\n symbols: ticker,\n greeks: false,\n });\n const quote = q?.quotes?.quote;\n if (!quote || !quote.last) return [];\n const price = quote.last;\n const changePct = quote.change_percentage ?? null;\n\n if (CFG.dayFilter) {\n if (changePct === null) return [];\n if (changePct > -CFG.dayDown) return []; // not down enough on the day\n }\n\n const ex = await tradier(\"/markets/options/expirations\", {\n symbol: ticker,\n includeAllRoots: true,\n });\n let exps = ex?.expirations?.date || [];\n if (!Array.isArray(exps)) exps = [exps];\n const valid = exps\n .filter((e) => {\n const d = Math.round((new Date(e) - today) / 86400000);\n return d >= CFG.dteMin && d <= CFG.dteMax;\n })\n .sort((a, b) => new Date(a) - new Date(b))\n .slice(0, CFG.maxExps);\n\n const out = [];\n for (const exp of valid) {\n const dte = Math.round((new Date(exp) - today) / 86400000);\n const ch = await tradier(\"/markets/options/chains\", {\n symbol: ticker,\n expiration: exp,\n greeks: false,\n });\n let opts = ch?.options?.option || [];\n if (!Array.isArray(opts)) opts = [opts];\n const puts = opts.filter((o) =>\n o.option_type === \"put\" && o.bid > 0 && o.ask > 0\n );\n\n for (const width of CFG.widths) {\n const shorts = puts.filter((p) => {\n const otm = (price - p.strike) / price;\n return otm >= CFG.otmMin && otm <= CFG.otmMax;\n });\n for (const sp of shorts) {\n const longStrike = +(sp.strike - width).toFixed(2);\n const lp = puts.find((p) => Math.abs(p.strike - longStrike) < 0.01);\n if (!lp) continue;\n const netCredit = sp.bid - lp.ask;\n if (netCredit <= 0) continue;\n const bidAsk = (sp.ask - sp.bid) + (lp.ask - lp.bid);\n if (bidAsk > CFG.maxBidAsk * 2) continue;\n const premiumPct = netCredit / width;\n out.push({\n ticker,\n exp,\n dte,\n price,\n shortStrike: sp.strike,\n longStrike,\n width,\n netCredit,\n premiumPct,\n qualifies: premiumPct >= CFG.minPremPct,\n });\n }\n }\n }\n return out;\n}\n\nasync function sendTelegram(text) {\n const token = env(\"TELEGRAM_BOT_TOKEN\");\n const chat = env(\"TELEGRAM_CHAT_ID\");\n if (!token || !chat) {\n throw new Error(\"Missing TELEGRAM_BOT_TOKEN or TELEGRAM_CHAT_ID\");\n }\n const res = await fetch(`https://api.telegram.org/bot${token}/sendMessage`, {\n method: \"POST\",\n headers: { \"Content-Type\": \"application/json\" },\n body: JSON.stringify({\n chat_id: chat,\n text,\n parse_mode: \"HTML\",\n disable_web_page_preview: true,\n }),\n });\n if (!res.ok) throw new Error(`Telegram ${res.status}: ${await res.text()}`);\n}\n\nexport default async function () {\n const m = marketState();\n if (!CFG.force) {\n if (!m.open) {\n return `Market closed — skipped (${m.et.toLocaleString()} ET).`;\n }\n if (!SCAN_HOURS.includes(m.hour)) {\n return `Off-cadence ${m.hour}:00 ET — skipped.`;\n }\n }\n\n const tickers = CFG.watchlist.slice(0, CFG.maxTickers);\n const all = [];\n for (const t of tickers) {\n try {\n all.push(...(await scanTicker(t)));\n } catch (e) {\n console.log(`${t}: ${e.message}`);\n }\n }\n\n const qualifying = all.filter((r) => r.qualifies);\n if (!qualifying.length) {\n console.log(\"No qualifying spreads this run.\");\n return \"No qualifying spreads.\";\n }\n\n qualifying.sort((a, b) => b.premiumPct - a.premiumPct);\n const lines = qualifying.slice(0, 30).map(\n (r) =>\n `• ${r.ticker} ${r.shortStrike}P/${r.longStrike}P · w$${r.width} · ` +\n `${(r.premiumPct * 100).toFixed(1)}% · ${r.exp} (${r.dte}d)`,\n );\n const etStamp = new Date().toLocaleString(\"en-US\", {\n timeZone: \"America/New_York\",\n });\n const msg =\n `TradeOS — ${qualifying.length} qualifying spread${\n qualifying.length > 1 ? 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Diff · v3