\n Preview\n

\n\n

\n \n {!started && (\n

\n Nothing built yet.\n

\n )}\n

\n );\n}\n","label",[200,201,71],"frontend","components","pulls","branches",3,"forks","envVars",{"_210":212,"_213":26},"connections",{"_210":26,"_211":26},"count","unfilledCount",2,"emptyCount",{"_33":311,"_13":200,"_69":260,"_43":-5,"_35":36,"_193":40,"_194":100,"_37":312,"_39":26,"_72":308,"_196":-5,"_74":24,"_198":-5,"_232":313,"_17":314},{"_33":306,"_13":201,"_69":192,"_43":260,"_35":36,"_193":40,"_194":100,"_37":307,"_39":26,"_72":308,"_196":-5,"_74":24,"_198":-5,"_232":309,"_17":310},{"_33":298,"_13":299,"_69":300,"_43":192,"_35":36,"_193":301,"_194":100,"_37":302,"_39":40,"_72":73,"_196":303,"_74":24,"_198":-5,"_232":304,"_17":305},{"_33":290,"_13":291,"_69":292,"_43":192,"_35":36,"_193":293,"_194":100,"_37":294,"_39":212,"_72":73,"_196":295,"_74":24,"_198":-5,"_232":296,"_17":297},{"_33":282,"_13":283,"_69":284,"_43":192,"_35":36,"_193":285,"_194":100,"_37":286,"_39":40,"_72":73,"_196":287,"_74":24,"_198":-5,"_232":288,"_17":289},{"_33":191,"_13":71,"_69":70,"_43":192,"_35":36,"_193":80,"_194":100,"_37":279,"_39":40,"_72":73,"_196":197,"_74":24,"_198":-5,"_232":280,"_17":281},{"_33":272,"_13":273,"_69":274,"_43":260,"_35":36,"_193":40,"_194":100,"_37":275,"_39":26,"_72":21,"_196":276,"_74":24,"_198":-5,"_232":277,"_17":278},{"_33":265,"_13":266,"_69":267,"_43":260,"_35":36,"_193":40,"_194":100,"_37":268,"_39":26,"_72":21,"_196":269,"_74":24,"_198":-5,"_232":270,"_17":271},{"_33":257,"_13":258,"_69":259,"_43":260,"_35":36,"_193":40,"_194":100,"_37":261,"_39":26,"_72":73,"_196":262,"_74":24,"_198":-5,"_232":263,"_17":264},{"_33":250,"_13":251,"_69":252,"_43":-5,"_35":36,"_193":126,"_194":100,"_37":253,"_39":40,"_72":21,"_196":254,"_74":24,"_198":-5,"_232":255,"_17":256},{"_33":243,"_13":244,"_69":245,"_43":-5,"_35":36,"_193":212,"_194":100,"_37":246,"_39":26,"_72":73,"_196":247,"_74":24,"_198":-5,"_232":248,"_17":249},{"_33":235,"_13":236,"_69":237,"_43":-5,"_35":36,"_193":204,"_194":100,"_37":238,"_39":40,"_72":239,"_196":240,"_74":24,"_198":-5,"_232":241,"_17":242},{"_33":227,"_13":228,"_69":229,"_43":-5,"_35":36,"_193":40,"_194":100,"_37":230,"_39":26,"_72":73,"_196":231,"_74":24,"_198":-5,"_232":233,"_17":234},"5b811d57-f901-4544-98bd-66379ddddcc4","openrouter.ts","01a068e0-b6d8-7223-92f5-d76a67f32bd3",["D",1788465952496],"const ENDPOINT = \"https://openrouter.ai/api/v1/chat/completions\";\nconst MAX_TOKENS = 8192;\n\n// Shown as one-click defaults in the UI; any OpenRouter slug works, with an\n// optional \"@provider-tag\" suffix to pin a specific serving endpoint.\nexport const DEFAULT_MODELS = [\n \"moonshotai/kimi-k3@fireworks/fast\",\n \"anthropic/claude-opus-5-fast\",\n \"openai/gpt-5.6-luna\",\n \"google/gemini-3.6-flash\",\n \"z-ai/glm-5.2\",\n \"x-ai/grok-4.5\",\n];\n\nconst SYSTEM = `You write one complete HTML document, streamed top-to-bottom into a live browser.\n- Output raw HTML only: no prose, no code fences, no explanation.\n- Start with and end with , then stop.\n- In , include exactly this stylesheet setup: \n- Style everything with Tailwind utility classes (arbitrary values like h-[40%] are fine). No \n \n \n

\n \n \n \n\n",[],[200,266],"46f7baa8-1eaf-400d-8128-6dc2ac2ab6d4","favicon.svg","01a068e0-b6d8-7223-92f5-beffebc7cd6a",["D",1788465952496],"\n",[],[200,273],["D",1788466055948],[],[200,201,71],"a6416a22-ac72-4d0f-b175-7237bb2f3a6d","CodePanel.tsx","01a068e0-b6d8-7223-92f5-b3495a272031",5,["D",1788466067621],"/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport { useEffect, useMemo, useRef } from \"https://esm.sh/react@18.2.0\";\nimport hljs from \"https://esm.sh/highlight.js@11.9.0/lib/core\";\nimport xml from \"https://esm.sh/highlight.js@11.9.0/lib/languages/xml\";\nimport javascript from \"https://esm.sh/highlight.js@11.9.0/lib/languages/javascript\";\nimport css from \"https://esm.sh/highlight.js@11.9.0/lib/languages/css\";\n\nhljs.registerLanguage(\"xml\", xml);\nhljs.registerLanguage(\"javascript\", javascript);\nhljs.registerLanguage(\"css\", css);\n\nfunction languageFor(path: string) {\n if (/\\.(js|mjs|ts)$/.test(path)) return \"javascript\";\n if (/\\.css$/.test(path)) return \"css\";\n return \"xml\";\n}\n\n// Middle column: the workspace. One tab per file, the selected file highlighted.\nexport function CodePanel(\n { files, selected, onSelect, busy }: {\n files: Record;\n selected: string;\n onSelect: (path: string) => void;\n busy: boolean;\n },\n) {\n const scrollRef = useRef(null);\n const paths = Object.keys(files);\n const code = files[selected] ?? \"\";\n\n const highlighted = useMemo(() => {\n if (!code) return \"\";\n try {\n return hljs.highlight(code, { language: languageFor(selected) }).value;\n } catch {\n return null;\n }\n }, [code, selected]);\n\n useEffect(() => {\n scrollRef.current?.scrollTo({ top: 0 });\n }, [selected]);\n\n return (\n

\n {paths.length === 0 && Workspace}\n {paths.map((p) => (\n onSelect(p)}\n className={`cursor-pointer rounded px-2 py-0.5 font-mono text-[11px] ${p === selected ? \"bg-gray-700 text-gray-100\" : \"text-gray-400 hover:text-gray-200\"}`}\n >\n {p}\n \n ))}\n {busy && }\n

\n {code && (\n navigator.clipboard.writeText(code)}\n className=\"text-[11px] px-2 py-1 rounded border border-gray-700 text-gray-400 hover:bg-gray-800 transition-colors cursor-pointer\"\n >\n Copy\n \n )}\n

\n\n \n {!code\n ? Files appear here as the agent writes them.\n : highlighted\n ? \n : {code}}\n \n

\n  );\n}\n",[],[200,201,283],"478c33a7-887d-4a98-8b6a-d40012d64707","ChatPanel.tsx","01a068e0-b6d8-7223-92f5-af1323b10f28",8,["D",1788466244212],"/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport { useEffect, useRef, useState } from \"https://esm.sh/react@18.2.0\";\nimport type { AgentRun, FeedItem, ModelOption } from \"./App.tsx\";\n\nconst EXAMPLES = [\n  \"A pomodoro timer with start and reset\",\n  \"A pricing page with three tiers\",\n  \"A dark landing page for a coffee brand\",\n];\n\nconst ms = (n: number) => n >= 1000 ? `${(n / 1000).toFixed(2)}s` : `${Math.round(n)}ms`;\nconst num = (n: number) => Math.round(n).toLocaleString();\nconst usd = (n: number) => n >= 0.01 ? `$${n.toFixed(3)}` : `$${n.toFixed(5)}`;\n\n// One agent run: the model's reply, then every turn and tool call in order with its timing.\nfunction RunCard({ run }: { run: AgentRun }) {\n  const running = !run.totals && !run.error;\n  const provider = [...run.events].reverse().find((e) => e.kind === \"turn\" && e.stats.provider);\n  return (\n    \n      \n        {run.model}\n        {running && working}\n        {provider?.kind === \"turn\" && (\n          via {provider.stats.provider}\n        )}\n      
\n\n      {run.text && {run.text}
}\n\n      {run.events.length > 0 && (\n        \n          {run.events.map((e, i) =>\n            e.kind === \"turn\"\n              ? (\n                \n                  \n                    turn {e.stats.index}{\" \"}\n                    {num(e.stats.completionTokens)} tok · first token {ms(e.stats.ttftMs)}{e.stats.totalMs - e.stats.ttftMs > 50 ? ` · ${num(e.stats.tokensPerSecond)} tok/s` : \"\"}\n                  \n                  {ms(e.stats.totalMs)}\n                
\n              )\n              : (\n                \n                  {e.name} {e.args}\n                  {ms(e.ms)}\n                
\n              )\n          )}\n        
\n      )}\n\n      {run.totals && (\n        \n          ✓ {run.totals.turns} turn{run.totals.turns === 1 ? \"\" : \"s\"}, {run.totals.toolCalls} tool call{run.totals.toolCalls === 1 ? \"\" : \"s\"}, {num(run.totals.completionTokens)} tokens, {usd(run.totals.cost)} · {ms(run.totals.roundTripMs)}\n        
\n      )}\n      {run.error && (\n        \n          {run.error}\n        
\n      )}\n    
\n  );\n}\n\nexport function ChatPanel({\n  feed,\n  loading,\n  model,\n  defaults,\n  models,\n  onModelChange,\n  onSend,\n  onReset,\n}: {\n  feed: FeedItem[];\n  loading: boolean;\n  model: string;\n  defaults: string[];\n  models: ModelOption[];\n  onModelChange: (model: string) => void;\n  onSend: (instruction: string) => void;\n  onReset: () => void;\n}) {\n  const [draft, setDraft] = useState(\"\");\n  const [providers, setProviders] = useState<{ tag: string; name: string }[]>([]);\n  const scrollRef = useRef(null);\n\n  // Suggest provider pins for the currently-typed model slug.\n  const baseSlug = model.split(\"@\")[0].trim();\n  useEffect(() => {\n    setProviders([]);\n    if (!/^[\\w.-]+\\/[\\w.:-]+$/.test(baseSlug)) return;\n    let cancelled = false;\n    const t = setTimeout(() => {\n      fetch(`/api/providers?model=${encodeURIComponent(baseSlug)}`)\n        .then((r) => r.json())\n        .then((d) => {\n          if (!cancelled) setProviders(d.providers ?? []);\n        })\n        .catch(() => {});\n    }, 300);\n    return () => {\n      cancelled = true;\n      clearTimeout(t);\n    };\n  }, [baseSlug]);\n\n  useEffect(() => {\n    scrollRef.current?.scrollTo({ top: scrollRef.current.scrollHeight, behavior: \"smooth\" });\n  }, [feed, loading]);\n\n  function submit() {\n    const text = draft.trim();\n    if (!text || loading) return;\n    onSend(text);\n    setDraft(\"\");\n  }\n\n  return (\n    \n      \n        \n          OpenRouter Coder
\n          \n            Any model on{\" \"}\n            OpenRouter{\" \"}\n            builds and edits a page with tools\n          
\n        
\n        {feed.length > 0 && (\n          \n        )}\n      
\n\n      \n        Model\n         onModelChange((e.target as HTMLInputElement).value)}\n          placeholder=\"provider/model-slug\"\n          spellCheck={false}\n          className=\"mt-1 w-full rounded-lg border border-gray-300 px-3 py-1.5 font-mono text-xs focus:border-transparent focus:outline-none focus:ring-2 focus:ring-blue-500\"\n        />\n        \n          {models.map((m) => )}\n        \n        {providers.length > 0 && (\n          \n            provider:\n            {providers.map((p) => {\n              const pinned = model === `${baseSlug}@${p.tag}`;\n              return (\n                 onModelChange(pinned ? baseSlug : `${baseSlug}@${p.tag}`)}\n                  title={p.name}\n                  className={`cursor-pointer rounded-full border px-2 py-0.5 font-mono text-[10px] ${\n                    pinned\n                      ? \"border-amber-500 bg-amber-50 text-amber-700\"\n                      : \"border-gray-200 text-gray-500 hover:border-gray-300\"\n                  }`}\n                >\n                  {p.tag}\n                \n              );\n            })}\n          
\n        )}\n        \n          {defaults.map((slug) => (\n             onModelChange(slug)}\n              className={`cursor-pointer rounded-full border px-2 py-0.5 font-mono text-[10px] ${\n                model === slug\n                  ? \"border-blue-500 bg-blue-50 text-blue-700\"\n                  : \"border-gray-200 text-gray-500 hover:border-gray-300\"\n              }`}\n            >\n              {slug.replace(/^[^/]+\\//, \"\")}\n            \n          ))}\n        
\n      
\n\n      \n        {feed.length === 0 && (\n          \n            Pick a model, describe a page. Then ask for changes: the model reads and edits the files with tools, and the page re-renders after every edit.
\n            \n              {EXAMPLES.map((example) => (\n                 onSend(example)}\n                  className=\"block w-full cursor-pointer rounded-lg border border-gray-200 bg-white px-3 py-2 text-left hover:border-blue-400 hover:text-blue-700\"\n                >\n                  {example}\n                \n              ))}\n            
\n          
\n        )}\n\n        {feed.map((item, i) => item.kind === \"user\"\n          ? (\n            \n              \n                {item.text}\n              
\n            
\n          )\n          : )}\n      
\n\n      \n         setDraft((e.target as HTMLTextAreaElement).value)}\n          onKeyDown={(e) => {\n            if (e.key === \"Enter\" && !e.shiftKey) {\n              e.preventDefault();\n              submit();\n            }\n          }}\n          rows={2}\n          placeholder=\"Describe a page, or a change to it…  (Enter to send)\"\n          className=\"w-full resize-none rounded-lg border border-gray-300 px-3 py-2 text-sm focus:border-transparent focus:outline-none focus:ring-2 focus:ring-blue-500\"\n        />\n        \n          {loading ? \"Working…\" : \"Send\"}\n        \n        \n          view source\n        
\n      
\n    
\n  );\n}\n",[],[200,201,291],"ab16da26-4ce1-429f-9c02-039969e49fe4","App.tsx","01a068e0-b6d8-7223-92f5-aaa5a9dca8cb",6,["D",1788466101347],"/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport { useEffect, useRef, useState } from \"https://esm.sh/react@18.2.0\";\nimport { ChatPanel } from \"./ChatPanel.tsx\";\nimport { CodePanel } from \"./CodePanel.tsx\";\nimport { PreviewPanel } from \"./PreviewPanel.tsx\";\nimport type { PreviewHandle } from \"./PreviewPanel.tsx\";\n\nexport interface TurnStats {\n  index: number;\n  model: string;\n  provider: string;\n  ttftMs: number;\n  totalMs: number;\n  completionTokens: number;\n  promptTokens: number;\n  cost: number;\n  tokensPerSecond: number;\n  toolCalls: number;\n}\n\nexport type RunEvent =\n  | { kind: \"turn\"; stats: TurnStats }\n  | { kind: \"tool\"; name: string; args: string; result: string; ms: number; ok: boolean };\n\nexport interface AgentRun {\n  kind: \"run\";\n  id: string;\n  model: string;\n  text: string;\n  events: RunEvent[];\n  totals?: { turns: number; toolCalls: number; totalMs: number; completionTokens: number; cost: number; roundTripMs: number };\n  error?: string;\n}\n\nexport type FeedItem = { kind: \"user\"; text: string } | AgentRun;\n\nexport interface ModelOption {\n  id: string;\n  name: string;\n}\n\nexport function App() {\n  const [feed, setFeed] = useState([]);\n  // The conversation as the model sees it, and the workspace. Both live here and go back to the server with each request.\n  const [messages, setMessages] = useState([]);\n  const [files, setFiles] = useState>({});\n  const [selected, setSelected] = useState(\"index.html\");\n  const [model, setModel] = useState(\"\");\n  const [defaults, setDefaults] = useState([]);\n  const [models, setModels] = useState([]);\n  const [loading, setLoading] = useState(false);\n  const previewRef = useRef(null);\n\n  useEffect(() => {\n    fetch(\"/api/models\")\n      .then((r) => r.json())\n      .then((d) => {\n        setDefaults(d.defaults ?? []);\n        setModels(d.models ?? []);\n        setModel((current) => current || d.defaults?.[0] || \"\");\n      })\n      .catch(() => {});\n  }, []);\n\n  function showFiles(next: Record) {\n    setFiles(next);\n    setSelected((s) => s in next ? s : \"index.html\" in next ? \"index.html\" : Object.keys(next)[0] ?? \"index.html\");\n    if (next[\"index.html\"] !== undefined) previewRef.current?.render(next[\"index.html\"]);\n  }\n\n  async function send(instruction: string) {\n    if (loading || !model.trim()) return;\n    const runId = crypto.randomUUID();\n    setLoading(true);\n    setFeed((prev) => [...prev, { kind: \"user\", text: instruction }, { kind: \"run\", id: runId, model: model.trim(), text: \"\", events: [] }]);\n    const updateRun = (update: (run: AgentRun) => AgentRun) => {\n      setFeed((prev) => prev.map((item) => item.kind === \"run\" && item.id === runId ? update(item) : item));\n    };\n    const startedAt = performance.now();\n\n    try {\n      const res = await fetch(\"/api/agent\", {\n        method: \"POST\",\n        headers: { \"Content-Type\": \"application/json\" },\n        body: JSON.stringify({ messages, files, instruction, model: model.trim() }),\n      });\n      if (!res.ok || !res.body) {\n        const err = await res.json().catch(() => ({}));\n        throw new Error(err?.error ?? `Request failed (${res.status})`);\n      }\n\n      const reader = res.body.getReader();\n      const decoder = new TextDecoder();\n      let buffer = \"\";\n      while (true) {\n        const { done, value } = await reader.read();\n        if (done) break;\n        buffer += decoder.decode(value, { stream: true });\n        const frames = buffer.split(\"\\n\\n\");\n        buffer = frames.pop() ?? \"\";\n        for (const frame of frames) {\n          const line = frame.split(\"\\n\").find((l) => l.startsWith(\"data:\"));\n          if (!line) continue;\n          const event = JSON.parse(line.slice(5).trim());\n          switch (event.type) {\n            case \"text\":\n              updateRun((run) => ({ ...run, text: run.text + event.text }));\n              break;\n            case \"turn\":\n              updateRun((run) => ({ ...run, events: [...run.events, { kind: \"turn\", stats: event.stats }] }));\n              break;\n            case \"tool\":\n              updateRun((run) => ({ ...run, events: [...run.events, { kind: \"tool\", name: event.name, args: event.args, result: event.result, ms: event.ms, ok: event.ok }] }));\n              break;\n            case \"files\":\n              showFiles(event.files);\n              break;\n            case \"done\":\n              setMessages(event.messages);\n              showFiles(event.files);\n              updateRun((run) => ({ ...run, totals: { ...event.totals, roundTripMs: performance.now() - startedAt } }));\n              break;\n            case \"error\":\n              throw new Error(event.message);\n          }\n        }\n      }\n    } catch (err) {\n      const message = err instanceof Error ? err.message : String(err);\n      updateRun((run) => ({ ...run, error: message }));\n    } finally {\n      setLoading(false);\n    }\n  }\n\n  function reset() {\n    setFeed([]);\n    setMessages([]);\n    setFiles({});\n    setSelected(\"index.html\");\n    previewRef.current?.clear();\n  }\n\n  return (\n    \n      \n      \n      \n    \n  );\n}\n",[],[200,201,299],"47ead9e1-88ea-4dbb-9783-a9b966a01cf7",["D",1788465952496],"directory",[216,217,218,219],[200,201],"0fe51db3-8ee1-454b-9181-9493f2435699",["D",1788465952496],[215,220,221,222],[200],["D",1785252223134],["D",1789561254403],{"_11":12,"_139":77},{"_11":12,"_135":-5,"_76":77,"_30":75,"_136":137,"_138":24},{"_39":126,"_13":16,"_33":36,"_127":87,"_128":65,"_129":67,"_130":91,"_131":87,"_132":42,"_133":14,"_134":12},"ctx",{"_54":-5,"_160":353,"_354":355,"_356":357,"_358":24,"_359":24,"_360":24,"_361":100,"_362":-5,"_363":-7,"_364":-7,"_365":26,"_366":24,"_367":24,"_368":-5,"_369":24,"_370":24,"_371":24,"_372":-5},"ENV",{"_324":325,"_326":327,"_328":66,"_329":330,"_331":332,"_333":334,"_335":336,"_337":338,"_339":340,"_341":342,"_343":344,"_345":346,"_347":348,"_349":350,"_351":352},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","e87eb04e707cf64e7e532c8e8ec395f209e17f15","RENDER_GIT_BRANCH","POSTHOG_API_TOKEN","phc_nmoyuAkStEZuUp69rYlg1DZgrIt19Gx0Y4Hwf8tGgJP","POSTHOG_API_HOST","https://wart.val.town","WEB_API_TEMPLATE","https://{val}.web.val.run","APP_URL","https://www.val.town","MODULE_URL","https://esm.town","VANITY_WEB_API_TEMPLATE","https://{label}.val.run/","DENOLS_URL","https://lsp.val.town","NODE_ENV","production","CLOUDFLARE_TURNSTILE_SITE_KEY","0x4AAAAAACtaIZJH7s9rBMZ6","GOOGLE_CLIENT_ID","875989696899-jtsqkhlbdv5jrlsk8631p7ipjg3c6o62.apps.googleusercontent.com","STRIPE_PUBLISHABLE_KEY","pk_live_51N2zvWEpZTTLipIkVEwXrUG9AT0yeOOEYxszarZT1jpsZV58Ly6wlg3SltZpHN26CUalOBmUSY7adQRQiSkCZz2500qSXNkf8Y","API_URL","https://api.val.town",[],"preferencesKeybindings","default","preferencesTheme","light","preferencesFixers","preferencesCopilot","preferencesSelectionAi","preferencesCloseBrackets","preferencesChatPanelState","preferencesDprint","preferencesDenofmt","notificationCount","flagDenols","isBusinessOrgMember","businessOrgHandle","isBusinessOrgAdmin","isHigherTownieTier","navCollapsed","currentOrgId"]

History · PreviewPanel.tsx