\n Preview\n

\n\n

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

\n Nothing built yet.\n

\n )}\n

\n );\n}\n",[121,122,112],"b9c2db1cf472b0b2f30efc59caea025c4a0cd85279de178ab539da6ee6af115d","frontend","components","3ad9659d-0b22-427a-963b-c1ccb811e689","9bd18b64-8a98-11f1-b88a-1607ee4eb77e","019fa953-1906-7388-b79f-12a297603701",20,["D",1785252842654],"/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport { useEffect, useRef, useState } from \"https://esm.sh/react@18.2.0\";\nimport type { MutableRefObject } from \"https://esm.sh/react@18.2.0\";\n\nexport interface PreviewStream {\n start: () => void;\n write: (chunk: string) => void;\n finish: () => void;\n}\n\n/**\n * Live preview that streams HTML into the iframe via document.write, so the\n * page builds up progressively instead of refreshing on every delta. The\n * iframe needs allow-same-origin for the parent to reach contentDocument.\n */\nexport function PreviewPanel({ streamRef }: { streamRef: MutableRefObject }) {\n const iframeRef = useRef(null);\n const [started, setStarted] = useState(false);\n\n useEffect(() => {\n streamRef.current = {\n start() {\n setStarted(true);\n try {\n iframeRef.current?.contentDocument?.open();\n } catch {\n // ignore — iframe not ready yet\n }\n },\n write(chunk) {\n try {\n iframeRef.current?.contentDocument?.write(chunk);\n } catch {\n // ignore mid-stream write races\n }\n },\n finish() {\n try {\n iframeRef.current?.contentDocument?.close();\n } catch {\n // already closed\n }\n },\n };\n return () => {\n streamRef.current = null;\n };\n }, []);\n\n return (\n

\n Preview\n

\n\n

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

\n Nothing generated yet.\n

\n )}\n

\n );\n}\n",[121,122,112],"c1823b6f16785ae93f3b9dba426308edc85ade67cfa4f10b7cc433873b95ab19","frontend/components/CodePanel.tsx",{"_32":142,"_13":135,"_82":143,"_84":125,"_85":33,"_86":144,"_88":26,"_34":145,"_41":22,"_91":117,"_93":146,"_65":51,"_95":-5,"_96":-7,"_75":147,"_98":148},{"_32":134,"_13":135,"_82":136,"_84":114,"_85":59,"_86":137,"_88":26,"_34":138,"_41":90,"_91":117,"_93":139,"_65":51,"_95":-5,"_96":-7,"_75":140,"_98":141},"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",[121,122,135],"3339ab1077bd958496b9625590059924f6b67d0ea6093766d332079c7ab7525c","f3d2cba4-a159-4f0d-b466-0a91f1bf0d11","99e95052-8a98-11f1-a6c3-1607ee4eb77e",7,["D",1785252344695],"/** @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\";\n\n// The xml grammar delegates the contents of a script tag to the javascript\n// grammar, so registering both gives embedded JS highlighting for free.\nhljs.registerLanguage(\"xml\", xml);\nhljs.registerLanguage(\"javascript\", javascript);\n\n// Middle column: the raw output as it streams in.\nexport function CodePanel(\n  { code, streaming }: {\n    code: string;\n    streaming: boolean;\n  },\n) {\n  const scrollRef = useRef(null);\n\n  // Partial markup mid-stream is malformed by definition; hljs degrades to\n  // plain text on the unclosed tail rather than throwing, which is fine here.\n  const highlighted = useMemo(() => {\n    if (!code) return \"\";\n    try {\n      return hljs.highlight(code, { language: \"xml\" }).value;\n    } catch {\n      return null; // fall back to unhighlighted text\n    }\n  }, [code]);\n\n  useEffect(() => {\n    if (streaming) scrollRef.current?.scrollTo({ top: scrollRef.current.scrollHeight });\n  }, [code, streaming]);\n\n  return (\n    \n      \n        \n          Code\n          {streaming && (\n            \n          )}\n        
\n        {code && !streaming && (\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          ? Output appears here as it streams.\n          : highlighted\n          ? \n          : {code}}\n      \n    
\n  );\n}\n",[121,122,135],"8ab99d31e910cb8a15d41dbefae975340588b53a49f0d52e228d0882755931cf","frontend/components/ChatPanel.tsx",{"_32":159,"_13":153,"_82":160,"_84":125,"_85":33,"_86":161,"_88":26,"_34":162,"_41":87,"_91":117,"_93":163,"_65":51,"_95":-5,"_96":-7,"_75":164,"_98":165},{"_32":152,"_13":153,"_82":154,"_84":114,"_85":59,"_86":20,"_88":26,"_34":155,"_41":104,"_91":117,"_93":156,"_65":51,"_95":-5,"_96":-7,"_75":157,"_98":158},"478c33a7-887d-4a98-8b6a-d40012d64707","ChatPanel.tsx","01a068e0-b6d8-7223-92f5-af1323b10f28",["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",[121,122,153],"3edc741e5023d50acdfd8632b0f22e0dd907fc39907d3b070ffe0cba05c17561","56e98034-614c-4534-8c31-d4bd91bfd0ee","8ff9d166-8a98-11f1-9104-1607ee4eb77e",18,["D",1785252638430],"/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport { useEffect, useRef, useState } from \"https://esm.sh/react@18.2.0\";\nimport type { FeedItem, GenerationRun, ModelOption } from \"./App.tsx\";\n\nconst EXAMPLES = [\n  \"A pricing page with three tiers\",\n  \"A pomodoro timer with start/reset\",\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\nfunction GenerationCard({ run }: { run: GenerationRun }) {\n  const running = !run.summary && !run.error;\n  return (\n    \n      \n        {run.model}\n        {running && running}\n        {run.summary?.provider && (\n          \n            via {run.summary.provider}\n          \n        )}\n      
\n\n      {run.summary && (\n        \n          \n            Speed
\n            {num(run.summary.tokensPerSecond)} tok/s
\n          
\n          \n            First token
\n            {ms(run.summary.ttftMs)}
\n          
\n          \n            Output tokens
\n            {num(run.summary.completionTokens)}
\n          
\n          \n            Cost
\n            {usd(run.summary.cost)}
\n          
\n        
\n      )}\n\n      {run.summary && (\n        \n          ✓ Full page generated in {ms(run.summary.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            codes a page live\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. Each follow-up updates the spec and regenerates the full page.
\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…  (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 ? \"Generating…\" : \"Generate\"}\n        \n        \n          view source\n        
\n      
\n    
\n  );\n}\n",[121,122,153],"c6f9daa261f134971fc9031db5e2968d20cca83d86eeb075b242f41ce9c5fa56","frontend/components/App.tsx",{"_32":177,"_13":170,"_82":178,"_84":125,"_85":33,"_86":179,"_88":26,"_34":180,"_41":144,"_91":117,"_93":181,"_65":51,"_95":-5,"_96":-7,"_75":182,"_98":183},{"_32":169,"_13":170,"_82":171,"_84":114,"_85":59,"_86":172,"_88":26,"_34":173,"_41":90,"_91":117,"_93":174,"_65":51,"_95":-5,"_96":-7,"_75":175,"_98":176},"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",[121,122,170],"ae26b67b3f3c6fddd071626f27285e6c8de30edccaafd86090a27414ff9978af","57517c28-1ac2-47bb-b8af-76bae89ba6e1","019fa953-1906-7388-b79f-0b9be7e35aa2",26,["D",1785252901601],"/** @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 { PreviewStream } from \"./PreviewPanel.tsx\";\n\nexport interface Summary {\n  model: string;\n  provider: string;\n  completionTokens: number;\n  promptTokens: number;\n  cost: number;\n  ttftMs: number;\n  totalMs: number;\n  tokensPerSecond: number;\n  roundTripMs: number;\n}\n\nexport interface GenerationRun {\n  kind: \"run\";\n  id: string;\n  model: string;\n  summary?: Summary;\n  error?: string;\n}\n\nexport type FeedItem =\n  | { kind: \"user\"; text: string }\n  | GenerationRun;\n\nexport interface ModelOption {\n  id: string;\n  name: string;\n}\n\nexport function App() {\n  const [feed, setFeed] = useState([]);\n  // Follow-ups extend the running spec and regenerate the full page.\n  const [instructions, setInstructions] = useState([]);\n  const [model, setModel] = useState(\"\");\n  const [defaults, setDefaults] = useState([]);\n  const [models, setModels] = useState([]);\n  const [code, setCode] = 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  async function send(instruction: string) {\n    if (loading || !model.trim()) return;\n    const next = [...instructions, instruction];\n    const runId = crypto.randomUUID();\n\n    setLoading(true);\n    setInstructions(next);\n    setCode(\"\");\n    setFeed((prev) => [\n      ...prev,\n      { kind: \"user\", text: instruction },\n      { kind: \"run\", id: runId, model: model.trim() },\n    ]);\n\n    const updateRun = (update: (run: GenerationRun) => GenerationRun) => {\n      setFeed((prev) => prev.map((item) => item.kind === \"run\" && item.id === runId ? update(item) : item));\n    };\n    const startedAt = performance.now();\n    // The preview streams into the iframe via document.write — no refreshes.\n    // Hold back an opening code fence so it never renders as page text.\n    let acc = \"\";\n    let pending = \"\";\n    let previewStarted = false;\n\n    const pushPreview = (text: string) => {\n      pending += text;\n      if (!previewStarted) {\n        if (pending.startsWith(\"`\")) {\n          const nl = pending.indexOf(\"\\n\");\n          if (nl === -1) return; // fence line still incomplete\n          pending = pending.slice(nl + 1);\n        }\n        previewRef.current?.start();\n        previewStarted = true;\n      }\n      previewRef.current?.write(pending);\n      pending = \"\";\n    };\n\n    try {\n      const res = await fetch(\"/api/generate\", {\n        method: \"POST\",\n        headers: { \"Content-Type\": \"application/json\" },\n        body: JSON.stringify({ instructions: next, model: model.trim() }),\n      });\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\n      while (true) {\n        const { done, value } = await reader.read();\n        if (done) break;\n        buffer += decoder.decode(value, { stream: true });\n\n        const frames = buffer.split(\"\\n\\n\");\n        buffer = frames.pop() ?? \"\";\n\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\n          switch (event.type) {\n            case \"delta\": {\n              acc += event.text;\n              setCode(acc);\n              pushPreview(event.text);\n              break;\n            }\n\n            case \"done\": {\n              const roundTripMs = performance.now() - startedAt;\n              setCode(event.html);\n              if (!previewStarted) {\n                previewRef.current?.start();\n                previewRef.current?.write(event.html);\n              }\n              previewRef.current?.finish();\n              updateRun((run) => ({ ...run, summary: { ...event.stats, roundTripMs } }));\n              break;\n            }\n\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      setInstructions(instructions);\n    } finally {\n      setLoading(false);\n    }\n  }\n\n  function reset() {\n    setFeed([]);\n    setInstructions([]);\n    setCode(\"\");\n    previewRef.current?.start();\n    previewRef.current?.finish();\n  }\n\n  return (\n    \n      \n      \n      \n    
\n  );\n}\n",[121,122,170],"04e7f768c27b5ac038bb03bb47e9e6741add51689a535b3c0b17712aae47c6af","README.md",{"_32":194,"_13":184,"_82":195,"_84":-5,"_85":33,"_86":196,"_88":26,"_34":197,"_41":90,"_91":190,"_93":198,"_65":51,"_95":-5,"_96":-7,"_75":199,"_98":200},{"_32":187,"_13":184,"_82":188,"_84":-5,"_85":59,"_86":58,"_88":26,"_34":189,"_41":90,"_91":190,"_93":191,"_65":51,"_95":-5,"_96":-7,"_75":192,"_98":193},"78b113e2-c771-4657-8ea9-5251a16c1b7b","01a068e0-b6d8-7223-92f5-ccf7f0744998",["D",1788466250976],"file","# OpenRouter Coder\n\nPick any model on [OpenRouter](https://openrouter.ai/models) and have it build and edit a web page with tools: read, write, and edit files in a workspace, over as many turns as it needs, with the page re-rendering after every edit and every turn and tool call timed.\n\n## How it works\n\n- `agent.ts` — the agent loop: one streaming chat completion per turn with four tools (`list_files`, `read_file`, `write_file`, `edit_file`), tool calls executed against an in-memory workspace, up to 10 turns per request. Reasoning is turned off where the model allows it; `@provider-tag` on the model slug pins a serving endpoint, otherwise the fastest one is used\n- `index.ts` — Hono server: `POST /api/agent` streams the run as server-sent events; the browser holds the conversation and the workspace and sends both back with each request, so the server is stateless. `/api/models` and `/api/providers` power the model picker\n- `frontend/` — React chat with the per-run timeline, a workspace panel with one tab per file, and the live preview\n\n## Remix it\n\n1. [Remix this val](https://www.val.town/x/stevekrouse/openrouter-coder)\n2. Get an API key at [openrouter.ai/keys](https://openrouter.ai/settings/keys), then add it as `OPENROUTER_API_KEY` in the val's environment variables\n",[184],"2079d5813fbdc6cb8574aa17ec8e787483e46a1d7bd8f22fd66da43012a5d08a","ace9e6b2-df29-4893-b9d5-1a3dd54e24a0","019fa953-1907-764b-93b8-939e3947808c",10,["D",1785252359460],"# OpenRouter Coder\n\nPick any model on [OpenRouter](https://openrouter.ai/models) and watch it code a\nweb page live — with measured tokens/second, time-to-first-token, and exact cost\nper generation.\n\nSibling of [kimi-coder](https://www.val.town/x/stevekrouse/kimi-coder), which is\npinned to Kimi K3 on Modal.\n\n## How it works\n\n- `index.ts` — Hono server: streams `/api/generate` as server-sent events; `/api/models` proxies OpenRouter's model catalog (cached) to power the typeahead\n- `openrouter.ts` — one streaming chat completion with `provider: {sort: \"throughput\"}` (fastest host) and `reasoning: {enabled: false}` (raw codegen speed, no thinking)\n- `frontend/` — React chat + model picker (native datalist typeahead over all ~340 models) + code stream + live preview\n\n## Remix it\n\n1. [Remix this val](https://www.val.town/x/stevekrouse/openrouter-coder)\n2. Get an API key at [openrouter.ai/keys](https://openrouter.ai/settings/keys), then:\n\n👉 Add OPENROUTER_API_KEY here: https://www.val.town/x/stevekrouse/openrouter-coder/environment-variables?key=OPENROUTER_API_KEY\n",[184],"fc134b81945298e8a57d99afc792a6c629fcac3bd8f9daa2d9fb018246ba2184",{"_75":202,"_77":-7,"_79":203},"agent.ts",{"_32":204,"_13":202,"_82":205,"_84":-5,"_85":59,"_86":104,"_88":26,"_34":206,"_41":22,"_91":117,"_93":207,"_65":51,"_95":-5,"_96":-7,"_75":208,"_98":209},"9760a0a6-c989-4103-8d41-40741cdda98e","0e617c5a-a7d3-11f1-b986-1607ee4eb77e",["D",1788466034495],"// The agent loop: one conversation, a workspace of files, and four tools the model can call.\n// Each turn is one streaming chat completion; tool calls run here against the workspace, and\n// every step is emitted as a server-sent event so the browser can render the page and the timeline live.\nconst ENDPOINT = \"https://openrouter.ai/api/v1/chat/completions\";\nconst MAX_TURNS = 10;\nconst MAX_TOKENS = 8192;\n\nexport type Files = Record;\n\nexport type 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 AgentEvent =\n  | { type: \"text\"; text: string }\n  | { type: \"turn\"; stats: TurnStats }\n  | { type: \"tool\"; name: string; args: string; result: string; ms: number; ok: boolean }\n  | { type: \"files\"; files: Files }\n  | { type: \"done\"; messages: unknown[]; files: Files; totals: { turns: number; toolCalls: number; totalMs: number; completionTokens: number; cost: number } }\n  | { type: \"error\"; message: string };\n\nexport type Emit = (event: AgentEvent) => void;\n\nconst SYSTEM = `You are a coding agent. You work on a small web app: a workspace of files the user watches render live in a browser. The page is index.html.\nRules for the page: one HTML document. Put  in  and style with Tailwind utility classes. Put all JavaScript in one \n- Style everything with Tailwind utility classes (arbitrary values like h-[40%] are fine). No \n  \n  \n    
\n    \n    \n  \n\n",[],[121,360],"46f7baa8-1eaf-400d-8128-6dc2ac2ab6d4","favicon.svg","01a068e0-b6d8-7223-92f5-beffebc7cd6a",["D",1788465952496],"\n",[],[121,367],[],[121,122,112],[],[121,122,135],[],[121,122,153],[],[121,122,170],"47ead9e1-88ea-4dbb-9783-a9b966a01cf7",["D",1788465952496],[332,333,334,335],[121,122],["D",1788465952496],[331,336,337,338],[121],["D",1785252223134],["D",1789474235934],{"_11":12,"_251":247},{"_11":12,"_245":-5,"_246":247,"_217":218,"_248":249,"_250":51},{"_41":58,"_13":16,"_32":59,"_39":40,"_43":33,"_45":42,"_60":53,"_61":40,"_62":56,"_57":14,"_54":12},"ctx",{"_240":-5,"_272":426,"_427":428,"_429":430,"_431":51,"_432":51,"_433":51,"_434":26,"_435":-5,"_436":-7,"_437":-7,"_438":22,"_439":51,"_440":51,"_441":-5,"_442":51,"_443":51,"_444":51,"_445":-5},"ENV",{"_397":398,"_399":400,"_401":38,"_402":403,"_404":405,"_406":407,"_408":409,"_410":411,"_412":413,"_414":415,"_416":417,"_418":419,"_420":421,"_422":423,"_424":425},"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"]

Compare

Mergeagenticintomain

README.md+5-12

frontend/components/App.tsx+51-76

frontend/components/ChatPanel.tsx+39-35

frontend/components/CodePanel.tsx+35-20

frontend/components/PreviewPanel.tsx+22-26

Hindex.ts+13-22

agent.ts+235-0