diff --git a/package.json b/package.json
new file mode 100644
index 0000000..32cfe1f
--- /dev/null
+++ b/package.json
@@ -0,0 +1,28 @@
+{
+    "name": "@lumeweb/publish-webapp",
+    "version": "0.1.0",
+    "type": "module",
+    "main": "lib/index.js",
+    "bin": "./lib/index.js",
+    "devDependencies": {
+        "@lumeweb/node-library-preset": "^0.2.7",
+        "@types/mime": "^3.0.1",
+        "@types/prompts": "^2.4.4",
+        "presetter": "*"
+    },
+    "readme": "ERROR: No README data found!",
+    "_id": "@lumeweb/publish-webapp@0.1.0",
+    "scripts": {
+        "prepare": "presetter bootstrap",
+        "build": "run build"
+    },
+    "dependencies": {
+        "@lumeweb/libweb": "0.2.0-develop.31",
+        "array-from-async": "^3.0.0",
+        "chalk": "^5.3.0",
+        "mime": "^3.0.0",
+        "msgpackr": "^1.9.7",
+        "p-queue": "^7.3.4",
+        "prompts": "^2.4.2"
+    }
+}
diff --git a/src/index.ts b/src/index.ts
new file mode 100644
index 0000000..bb0ee0f
--- /dev/null
+++ b/src/index.ts
@@ -0,0 +1,122 @@
+import fs from "fs/promises";
+import path from "path";
+import * as process from "process";
+import fromAsync from "array-from-async";
+
+import * as util from "util";
+
+import {
+  hexToBytes,
+  loginActivePortals,
+  maybeInitDefaultPortals,
+  setActivePortalMasterKey,
+  uploadObject,
+} from "@lumeweb/libweb";
+
+import chalk from "chalk";
+
+import mime from "mime";
+import { pack } from "msgpackr";
+import PQueue from "p-queue";
+import prompts from "prompts";
+
+import type { WebAppMetadata } from "#types.js";
+
+let key = process.env.PORTAL_PRIVATE_KEY;
+let dir = process.env.DIR;
+const parallelUploads = parseInt(process.env.PARALLEL_UPLOADS ?? "0", 10) || 10;
+
+if (!key) {
+  key = await prompts.prompts.password({
+    name: "private_key",
+    message: "Enter your private key",
+    validate: (prev: string) => prev && prev.length === 64,
+    type: undefined,
+  });
+}
+
+if (!dir) {
+  dir = (await prompts.prompts.text({
+    name: "dir",
+    message: "Enter the directory of the webapp",
+    validate: (prev: string) => prev && prev.length > 0,
+    type: undefined,
+  })) as unknown as string;
+}
+
+dir = path.resolve(dir) + "/";
+
+setActivePortalMasterKey(hexToBytes(key as string));
+maybeInitDefaultPortals();
+
+const processedFiles: Array<{ cid: string; file: string; size: number }> = [];
+const queue = new PQueue({ concurrency: parallelUploads });
+
+void (await loginActivePortals());
+
+const files: string[] = await fromAsync(walkSync(dir));
+
+files.forEach((item) => {
+  void queue.add(async () => processFile(item));
+});
+
+await queue.onIdle();
+
+const metadata: WebAppMetadata = {
+  type: "web_app",
+  paths: {},
+  tryFiles: ["index.html"],
+};
+
+processedFiles
+  .sort((a, b) => {
+    if (a.file < b.file) {
+      return -1;
+    }
+    if (a.file > b.file) {
+      return 1;
+    }
+
+    return 0;
+  })
+  .forEach((item) => {
+    metadata.paths[item.file] = {
+      cid: item.cid,
+      contentType: mime.getType(item.file) ?? "application/octet-stream",
+      size: item.size,
+    };
+  });
+
+const serializedMetadata = pack(metadata);
+
+const [cid, err] = await uploadObject(serializedMetadata);
+if (err) {
+  console.error("Failed to publish: ", err);
+  process.exit(1);
+}
+
+console.log(
+  util.format("%s: %s", chalk.green("Web App successfully published"), cid),
+);
+
+async function processFile(filePath: string) {
+  const fd = await fs.open(filePath);
+  const size = (await fd.stat()).size;
+  const [cid, err] = await uploadObject(fd.createReadStream(), BigInt(size));
+  if (err) {
+    console.error("Failed to publish: ", err);
+    process.exit(1);
+  }
+  processedFiles.push({ cid, file: filePath.replace(dir as string, ""), size });
+}
+
+async function* walkSync(dir: string): AsyncGenerator<string> {
+  const files = await fs.readdir(dir, { withFileTypes: true });
+  for (const file of files) {
+    if (file.isDirectory()) {
+      yield* walkSync(path.join(dir, file.name));
+    } else {
+      yield path.join(dir, file.name);
+    }
+  }
+}
diff --git a/src/types.ts b/src/types.ts
new file mode 100644
index 0000000..162385d
--- /dev/null
+++ b/src/types.ts
@@ -0,0 +1,23 @@
+export interface WebAppMetadata {
+  type: "web_app";
+  name?: string;
+  tryFiles?: string[];
+  errorPages?: {
+    [key: string]: string; // key should match the pattern ^\d{3}$
+  };
+  paths: {
+    [path: string]: PathContent; // path has maxLength 255
+  };
+  extraMetadata?: ExtraMetadata; // I'm assuming this as any since the actual structure isn't provided
+}
+
+export interface PathContent {
+  cid: CID; // Assuming CID is another interface or type
+  contentType?: string; // Should match the provided pattern
+  size: number;
+}
+
+// Placeholder definitions based on the $ref in the schema.
+// You should replace these with the actual structures if you have them.
+export type CID = any;
+export type ExtraMetadata = any;