// ---------------------------------------------------------------------------// Codex plugin discovery — surface locally installed OpenAI Codex plugins that// ship a stdio MCP server as one-click stdio presets.//// A Codex plugin is a directory under `$CODEX_HOME/plugins/cache/<source>/// <name>/<version>/` whose `.codex-plugin/plugin.json` manifest points at an// `.mcp.json` describing how to spawn its server. The binaries are OpenAI's,// installed and licensed through the user's own Codex install — nothing here// bundles or downloads them; this module only READS what is already on disk// and reports whether each server's command exists.//// Node-only (fs/os): reached exclusively through a dynamic import in the// plugin extension (mirroring `stdio-connector.ts`'s isolation), never from a// barrel, so remote-only bundles and workerd never evaluate it.// --------------------------------------------------------------------------- import * as fs from "node:fs";import * as os from "node:os";import * as path from "node:path"; import { Option, Schema } from "effect"; import {  CURATED_CODEX_PLUGINS,  setupHint,  setupUrl,  type CuratedCodexPlugin,} from "./codex-plugin-presets"; export interface CodexPluginEntry {  /** Stable card id, e.g. `codex-messages`. */  readonly id: string;  readonly name: string;  /** Executor's own wording — manifests' long-form copy stays on disk. */  readonly summary: string;  /** Whether the server's command exists (and Codex itself is installed). */  readonly available: boolean;  /** Suggested integration slug, e.g. `codex_messages`. */  readonly slug: string;  readonly source: "curated" | "scanned";  readonly command: string;  readonly args: readonly string[];  readonly cwd?: string;  /** Non-interactive env the spawn needs (currently only CODEX_HOME). */  readonly env?: Readonly<Record<string, string>>;  /** Present on curated entries: the spawn is `codex app-server` and the   *  connector bridges MCP to it in process, calling tools on this named   *  server inside Codex. See `appserver-connector.ts`. */  readonly appServer?: {    readonly server: string;    readonly surface?: "sky" | "browser";    readonly modulePath?: string;  };  /** Shown when `available` is false: the ordered steps, and where to go. */  readonly setupHint?: string;  readonly setupUrl?: string;  /** Public image for this plugin, for machines with no local install. */  readonly fallbackIcon?: string;  /** The plugin's own icon from its local install, as a data URI. Read at   *  runtime from the user's disk — never shipped with executor. */  readonly icon?: string;  /** The plugin's own display metadata from its local manifest, so the add   *  screen can mirror how the plugin presents itself in Codex. */  readonly displayName?: string;  readonly tagline?: string;  readonly description?: string;} /** The Codex Computer Use client binary — the shared "Codex Computer Use" *  app that implements every curated plugin. Not spawned any more (its *  service refuses tool calls from non-Codex hosts; the app-server bridge is *  the working path) but still the install marker: when it is absent the *  plugins are not installed and the bridge would find no such server. */const clientBinaryPath = (codexHome: string): string =>  path.join(    codexHome,    "computer-use",    "Codex Computer Use.app",    "Contents",    "SharedSupport",    "SkyComputerUseClient.app",    "Contents",    "MacOS",    "SkyComputerUseClient",  ); /** The Chrome plugin's bundled browser client — the module the projected *  browser surface imports inside `node_repl`. * *  Reached through the `latest` symlink Codex maintains beside the versioned *  directories, so a plugin update does not strand the stored path. Same *  reasoning as pointing Computer Use at the unversioned client binary. */const browserClientPath = (codexHome: string): string =>  path.join(    codexHome,    "plugins",    "cache",    "openai-bundled",    "chrome",    "latest",    "scripts",    "browser-client.mjs",  ); const CURATED_PLUGIN_NAMES: ReadonlySet<string> = new Set(  CURATED_CODEX_PLUGINS.map((c) => c.pluginName),); /** The `codex` CLI the app-server bridge spawns. PATH first (the local *  executor server usually inherits the user's shell PATH), then the common *  install locations for launch contexts that do not. */const resolveCodexCli = (codexCli?: string): string | undefined => {  if (codexCli !== undefined) return isExecutableFile(codexCli) ? codexCli : undefined;  const dirs = [    ...(process.env["PATH"] ?? "").split(path.delimiter),    path.join(os.homedir(), ".bun", "bin"),    path.join(os.homedir(), ".local", "bin"),    "/opt/homebrew/bin",    "/usr/local/bin",  ];  for (const dir of dirs) {    if (dir.length === 0) continue;    const candidate = path.join(dir, "codex");    if (isExecutableFile(candidate)) return candidate;  }  return undefined;}; // ---------------------------------------------------------------------------// Manifest shapes — only the fields discovery needs. Everything else in the// manifest is OpenAI's and stays unread.// --------------------------------------------------------------------------- const PluginManifest = Schema.Struct({  name: Schema.String,  mcpServers: Schema.optional(Schema.Unknown),  interface: Schema.optional(    Schema.Struct({      displayName: Schema.optional(Schema.String),      shortDescription: Schema.optional(Schema.String),      longDescription: Schema.optional(Schema.String),      logo: Schema.optional(Schema.String),    }),  ),  description: Schema.optional(Schema.String),}); const McpServerSpec = Schema.Struct({  command: Schema.optional(Schema.String),  args: Schema.optional(Schema.Array(Schema.String)),  cwd: Schema.optional(Schema.String),  type: Schema.optional(Schema.String),  url: Schema.optional(Schema.String),}); const McpServersFile = Schema.Struct({  mcpServers: Schema.Record(Schema.String, McpServerSpec),}); const decodeManifestJson = Schema.decodeUnknownOption(Schema.fromJsonString(PluginManifest));const decodeServersFileJson = Schema.decodeUnknownOption(Schema.fromJsonString(McpServersFile));const decodeServersFile = Schema.decodeUnknownOption(McpServersFile); // ---------------------------------------------------------------------------// fs helpers — every call is best-effort: a missing or malformed entry means// "not a discoverable plugin", never a failure of the whole scan.// --------------------------------------------------------------------------- const tryOrElse = <A>(evaluate: () => A, orElse: A): A => {  // oxlint-disable-next-line executor/no-try-catch-or-throw -- boundary: every fs read here is best-effort; a missing or unreadable entry is "not discoverable", not an error  try {    return evaluate();  } catch {    return orElse;  }}; const listDirs = (dir: string): readonly string[] =>  tryOrElse(    () =>      fs        .readdirSync(dir, { withFileTypes: true })        .filter((entry) => entry.isDirectory())        .map((entry) => entry.name),    [],  ); const readText = (file: string): string | undefined =>  tryOrElse(() => fs.readFileSync(file, "utf-8"), undefined); const isReadableFile = (file: string): boolean =>  tryOrElse(() => fs.statSync(file).isFile(), false); const isExecutableFile = (file: string): boolean =>  tryOrElse(() => {    fs.accessSync(file, fs.constants.X_OK);    return fs.statSync(file).isFile();  }, false); /** Numeric-aware descending compare so `1.0.10 > 1.0.9` and date-like builds *  (`26.825.32147`) order correctly. */const versionPart = (parts: readonly number[], index: number): number => {  const value = parts[index];  return value === undefined || Number.isNaN(value) ? -1 : value;}; const compareVersionsDesc = (a: string, b: string): number => {  const as = a.split(/[.-]/).map((part) => Number.parseInt(part, 10));  const bs = b.split(/[.-]/).map((part) => Number.parseInt(part, 10));  for (let i = 0; i < Math.max(as.length, bs.length); i++) {    const av = versionPart(as, i);    const bv = versionPart(bs, i);    if (av !== bv) return bv - av;  }  return b.localeCompare(a);}; const sanitizeSlug = (value: string): string =>  value    .toLowerCase()    .replace(/[^a-z0-9]+/g, "_")    .replace(/^_+|_+$/g, ""); const sanitizeId = (value: string): string =>  value    .toLowerCase()    .replace(/[^a-z0-9]+/g, "-")    .replace(/^-+|-+$/g, ""); /** Bound on inlined icon bytes. The bundled icons run 100KB–1MB; anything *  past this is not worth inlining into a list response for a 20px avatar. */const MAX_ICON_BYTES = 1_000_000; const ICON_MIME: Readonly<Record<string, string>> = {  ".png": "image/png",  ".jpg": "image/jpeg",  ".jpeg": "image/jpeg",  ".webp": "image/webp",  ".svg": "image/svg+xml",}; /** The plugin's own icon as a data URI, read from the user's local install. */const readIconDataUri = (file: string): string | undefined =>  tryOrElse(() => {    const mime = ICON_MIME[path.extname(file).toLowerCase()];    if (mime === undefined) return undefined;    if (fs.statSync(file).size > MAX_ICON_BYTES) return undefined;    return `data:${mime};base64,${fs.readFileSync(file).toString("base64")}`;  }, undefined); interface CodexPluginDisplay {  readonly icon?: string;  readonly displayName?: string;  readonly tagline?: string;  readonly description?: string;} /** Display metadata (icon, names, descriptions) for a curated plugin from its *  cache entry (any source, newest version) — how the plugin presents itself *  in Codex. The curated SPAWN target is the stable client binary, but this *  metadata only exists in the cache; absent cache, the curated card falls *  back to executor's own wording. */const curatedDisplayMetadata = (codexHome: string, pluginName: string): CodexPluginDisplay => {  const cacheDir = path.join(codexHome, "plugins", "cache");  for (const sourceName of listDirs(cacheDir)) {    const pluginDir = path.join(cacheDir, sourceName, pluginName);    const version = [...listDirs(pluginDir)].sort(compareVersionsDesc)[0];    if (version === undefined) continue;    const versionDir = path.join(pluginDir, version);    const manifest = Option.getOrUndefined(      decodeManifestJson(readText(path.join(versionDir, ".codex-plugin", "plugin.json"))),    );    if (manifest === undefined) continue;    const logo = manifest.interface?.logo;    const icon = logo === undefined ? undefined : readIconDataUri(path.resolve(versionDir, logo));    return {      ...(icon === undefined ? {} : { icon }),      ...(manifest.interface?.displayName === undefined        ? {}        : { displayName: manifest.interface.displayName }),      ...(manifest.interface?.shortDescription === undefined        ? {}        : { tagline: manifest.interface.shortDescription }),      ...(manifest.interface?.longDescription === undefined        ? {}        : { description: manifest.interface.longDescription }),    };  }  return {};}; // ---------------------------------------------------------------------------// Scan// --------------------------------------------------------------------------- const scanCachedPlugin = (  codexHome: string,  pluginDir: string,  pluginName: string,): readonly CodexPluginEntry[] => {  const versions = [...listDirs(pluginDir)].sort(compareVersionsDesc);  const version = versions[0];  if (version === undefined) return [];  const versionDir = path.join(pluginDir, version);   const manifest = Option.getOrUndefined(    decodeManifestJson(readText(path.join(versionDir, ".codex-plugin", "plugin.json"))),  );  if (manifest?.mcpServers === undefined) return [];   // `mcpServers` is a relative path to an `.mcp.json` in every known manifest;  // tolerate an inline object of the same shape.  const servers = Option.getOrUndefined(    typeof manifest.mcpServers === "string"      ? decodeServersFileJson(readText(path.resolve(versionDir, manifest.mcpServers)))      : decodeServersFile({ mcpServers: manifest.mcpServers }),  );  if (servers === undefined) return [];   const displayName = manifest.interface?.displayName ?? manifest.name;  const summary =    manifest.interface?.shortDescription ??    manifest.description?.split("\n")[0] ??    `Local MCP server from the Codex plugin "${manifest.name}".`;  const icon =    manifest.interface?.logo === undefined      ? undefined      : readIconDataUri(path.resolve(versionDir, manifest.interface.logo));  const display: CodexPluginDisplay = {    ...(icon === undefined ? {} : { icon }),    ...(manifest.interface?.displayName === undefined      ? {}      : { displayName: manifest.interface.displayName }),    ...(manifest.interface?.shortDescription === undefined      ? {}      : { tagline: manifest.interface.shortDescription }),    ...(manifest.interface?.longDescription === undefined      ? {}      : { description: manifest.interface.longDescription }),  };   const localServers = Object.entries(servers.mcpServers).flatMap(([serverKey, spec]) =>    spec.command !== undefined && spec.type !== "http" && spec.url === undefined      ? [{ serverKey, command: spec.command, args: spec.args, cwd: spec.cwd }]      : [],  );   return localServers.map(({ serverKey, ...spec }) => {    // Manifest paths are relative to the versioned plugin dir. The versioned    // dir moves on plugin updates — the connection health check surfaces that    // as "command missing" and the card re-adds against the new path.    const command = path.resolve(versionDir, spec.command);    const cwd = path.resolve(versionDir, spec.cwd ?? ".");    const available = isExecutableFile(command);    const idSuffix = localServers.length > 1 ? `-${sanitizeId(serverKey)}` : "";    return {      id: `codex-${sanitizeId(pluginName)}${idSuffix}`,      name: localServers.length > 1 ? `${displayName} — ${serverKey}` : displayName,      summary,      available,      slug: `codex_${sanitizeSlug(pluginName)}${idSuffix.replace(/-/g, "_")}`,      source: "scanned" as const,      command,      args: spec.args === undefined ? [] : [...spec.args],      cwd,      // Only CODEX_HOME travels: the manifests' wider `env_vars` lists name      // host variables whose VALUES would have to be copied out of this      // process's environment sight-unseen. A user can declare more env on      // the integration after adding it.      env: { CODEX_HOME: codexHome },      ...(available ? {} : { setupHint: setupHint("codex", displayName) }),      ...display,    };  });}; /** * Discover locally installed Codex plugins that expose a stdio MCP server. * * The three plugins implemented by the shared "Codex Computer Use" app are * curated: they are always listed (so the integration is discoverable on a * machine without Codex) and they are reached through the `codex app-server` * bridge — their service only honours tool calls from a Codex host session, * so a direct client spawn can list tools but never call them. Everything * else found in the plugin cache with a local-command MCP server is reported * as scanned and spawned directly. */export const scanCodexPlugins = (options?: {  readonly codexHome?: string;  /** Explicit `codex` CLI path (tests); default resolves PATH + fallbacks. */  readonly codexCli?: string;}): readonly CodexPluginEntry[] => {  const codexHome =    options?.codexHome ?? process.env["CODEX_HOME"] ?? path.join(os.homedir(), ".codex");   const codexCli = resolveCodexCli(options?.codexCli);  const computerUseApp = isExecutableFile(clientBinaryPath(codexHome));  const browserClient = browserClientPath(codexHome);  const chromePlugin = isReadableFile(browserClient);   /** Each curated card states what it needs; the `codex` CLI is required by   *  all of them because every one is reached through `codex app-server`. */  const requirementMet: Record<CuratedCodexPlugin["requires"], boolean> = {    "computer-use-app": computerUseApp,    "chrome-plugin": chromePlugin,    codex: true,  };   const curated: readonly CodexPluginEntry[] = CURATED_CODEX_PLUGINS.map((entry) => {    const display = curatedDisplayMetadata(codexHome, entry.pluginName);    const available = codexCli !== undefined && requirementMet[entry.requires];    return {      id: entry.id,      name: entry.name,      summary: entry.summary,      available,      slug: entry.slug,      source: "curated" as const,      command: codexCli ?? "codex",      args: ["app-server"],      env: { CODEX_HOME: codexHome },      appServer: {        server: entry.server,        ...(entry.surface === undefined ? {} : { surface: entry.surface }),        ...(entry.surface === "browser" ? { modulePath: browserClient } : {}),      },      ...(available        ? {}        : { setupHint: setupHint(entry.requires, entry.name), setupUrl: setupUrl(entry.requires) }),      fallbackIcon: entry.publicIcon ?? "https://integrations.sh/logo/openai.com",      ...display,    };  });   const cacheDir = path.join(codexHome, "plugins", "cache");  const scanned = listDirs(cacheDir).flatMap((sourceName) => {    const sourceDir = path.join(cacheDir, sourceName);    return listDirs(sourceDir)      .filter((pluginName) => !CURATED_PLUGIN_NAMES.has(pluginName))      .flatMap((pluginName) =>        scanCachedPlugin(codexHome, path.join(sourceDir, pluginName), pluginName),      );  });   // One card per id: the same plugin can appear under several cache sources  // (e.g. a curated and a remote copy); the first (available-first) entry wins.  const byId = new Map<string, CodexPluginEntry>();  for (const entry of [...scanned].sort((a, b) => Number(b.available) - Number(a.available))) {    if (!byId.has(entry.id)) byId.set(entry.id, entry);  }   return [...curated, ...byId.values()];};