diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 501a2fa..cea4808 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -28,3 +28,9 @@ jobs:
       - name: Lint
         run: |
           pnpm run lint
+
+      - name: Test Dry Run
+        run: |
+          pnpm run run:collect-artifacts --skipDownload
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/scripts/collectArtifacts.ts b/scripts/collectArtifacts.ts
index 5ec93e4..fad7a49 100644
--- a/scripts/collectArtifacts.ts
+++ b/scripts/collectArtifacts.ts
@@ -1,6 +1,7 @@
 import fs from "node:fs/promises";
 import { Readable } from "node:stream";
 import { pipeline } from "node:stream/promises";
+import { parseArgs } from "node:util";
 import { Semaphore } from "@core/asyncutil";
 import unzip from "unzip-stream";
 import {
@@ -14,6 +15,26 @@ import {
   DownloadData,
 } from "./common.ts";
 
+const { values: args } = parseArgs({
+  options: {
+    skipDownload: {
+      type: "boolean",
+    },
+    help: {
+      type: "boolean",
+    },
+  },
+  args: process.argv.slice(2),
+});
+
+if (args.help) {
+  console.log`Usage: collectArtifacts.ts [--skipDownload]`;
+  process.exit(0);
+}
+if (args.skipDownload) {
+  rootLogger.info("--skipDownload is set, skipping download.");
+}
+
 const branches = await octokit.paginate("GET /repos/{owner}/{repo}/branches", {
   owner: guestRepoOwner,
   repo: guestRepoName,
@@ -154,29 +175,33 @@ const downloadTargets = await Promise.all(
           },
         );
 
-        log.info`Downloading artifact from ${innerDownloadUrl}`;
-        const response = await fetch(innerDownloadUrl);
-        if (!response.ok) {
-          log.error`Failed to download artifact: ${response.statusText}`;
-          return;
-        }
-        if (!response.body) {
-          log.error("Response has no body");
-          return;
-        }
         const dirname =
           source.type === "branch"
             ? `branch-${source.branch.name}`
             : `pr-${source.pullRequest.number}`;
-        const destination = `${destinationDir}/${dirname}`;
-        log.info`Extracting artifact to ${destination}`;
-        await fs.mkdir(destination, { recursive: true });
-        await pipeline(
-          Readable.fromWeb(response.body),
-          unzip.Extract({
-            path: destination,
-          }),
-        );
+        if (args.skipDownload) {
+          log.info`Download skipped: ${innerDownloadUrl}`;
+        } else {
+          log.info`Downloading artifact from ${innerDownloadUrl}`;
+          const response = await fetch(innerDownloadUrl);
+          if (!response.ok) {
+            log.error`Failed to download artifact: ${response.statusText}`;
+            return;
+          }
+          if (!response.body) {
+            log.error("Response has no body");
+            return;
+          }
+          const destination = `${destinationDir}/${dirname}`;
+          log.info`Extracting artifact to ${destination}`;
+          await fs.mkdir(destination, { recursive: true });
+          await pipeline(
+            Readable.fromWeb(response.body),
+            unzip.Extract({
+              path: destination,
+            }),
+          );
+        }
         log.info("Done.");
 
         return { source, dirname };
diff --git a/scripts/common.ts b/scripts/common.ts
index 7c66d49..eb69ad1 100644
--- a/scripts/common.ts
+++ b/scripts/common.ts
@@ -4,7 +4,7 @@ import { config } from "dotenv";
 import { App, Octokit } from "octokit";
 import { paginateRest } from "@octokit/plugin-paginate-rest";
 import { throttling } from "@octokit/plugin-throttling";
-import { Endpoints } from "@octokit/types";
+import { Endpoints, OctokitResponse } from "@octokit/types";
 
 export type Branch =
   Endpoints["GET /repos/{owner}/{repo}/branches"]["response"]["data"][0];
@@ -84,27 +84,50 @@ const getEnv = (name: string) => {
   return value;
 };
 
-export const app = new App({
-  appId: Number.parseInt(getEnv("APP_ID")),
-  privateKey:
-    process.env.PRIVATE_KEY ||
-    (await fs.readFile(`${import.meta.dirname}/../private-key.pem`, "utf8")),
-  oauth: {
-    clientId: getEnv("CLIENT_ID"),
-    clientSecret: getEnv("CLIENT_SECRET"),
-  },
-  Octokit: Octokit.plugin(paginateRest, throttling),
-});
+let appInfo:
+  | OctokitResponse<Endpoints["GET /app"]["response"]["data"]>
+  | undefined;
+export let octokit: Octokit;
 
-export const appInfo = await app.octokit.request("GET /app");
-if (!appInfo.data) {
-  throw new Error("Failed to get app info.");
-}
-rootLogger.info`Running as ${appInfo.data.name}.`;
+if (process.env.APP_ID) {
+  rootLogger.info`Running as GitHub App. (Read + Write)`;
+  const app = new App({
+    appId: Number.parseInt(getEnv("APP_ID")),
+    privateKey:
+      process.env.PRIVATE_KEY ||
+      (await fs.readFile(`${import.meta.dirname}/../private-key.pem`, "utf8")),
+    oauth: {
+      clientId: getEnv("CLIENT_ID"),
+      clientSecret: getEnv("CLIENT_SECRET"),
+    },
+    Octokit: Octokit.plugin(paginateRest, throttling),
+  });
+
+  appInfo = await app.octokit.request("GET /app");
+  if (!appInfo.data) {
+    throw new Error("Failed to get app info.");
+  }
+  rootLogger.info`Running as ${appInfo.data.name}.`;
 
-const { data: installations } = await app.octokit.request(
-  "GET /app/installations",
-);
-const installationId = installations[0].id;
+  const { data: installations } = await app.octokit.request(
+    "GET /app/installations",
+  );
+  const installationId = installations[0].id;
 
-export const octokit = await app.getInstallationOctokit(installationId);
+  octokit = await app.getInstallationOctokit(installationId);
+} else if (process.env.GITHUB_TOKEN) {
+  rootLogger.info`Running with GitHub Token. (Read only)`;
+
+  octokit = new Octokit({
+    auth: getEnv("GITHUB_TOKEN"),
+  });
+} else {
+  throw new Error("No GitHub App or Token provided.");
+}
+
+export const getAppInfo = () => {
+  if (!appInfo) {
+    throw new Error("This script requires appInfo to be set.");
+  }
+  return appInfo;
+};
diff --git a/scripts/updateComments.ts b/scripts/updateComments.ts
index edf2023..cb1c074 100644
--- a/scripts/updateComments.ts
+++ b/scripts/updateComments.ts
@@ -1,6 +1,6 @@
 import fs from "node:fs/promises";
 import {
-  appInfo,
+  getAppInfo,
   commentMarker,
   commentMarkers,
   guestRepoName,
@@ -11,6 +11,8 @@ import {
   DownloadData,
 } from "./common.ts";
 
+const appInfo = getAppInfo();
+
 const downloadData = JSON.parse(
   await fs.readFile(
     `${import.meta.url.replace("updateComments.ts", "")}downloads.json`,
@@ -85,4 +87,4 @@ for (const { dirname, source } of downloadData) {
   }
 }
 
-rootLogger.info`All done! ${allPullRequests} PRs, ${newComments} new comments, ${updatedComments} updated comments.`;
+rootLogger.info`Done: ${newComments} new comments, ${updatedComments} updated comments / ${allPullRequests} PRs`;
diff --git a/tsconfig.app.json b/tsconfig.app.json
index d3f18a2..357c363 100644
--- a/tsconfig.app.json
+++ b/tsconfig.app.json
@@ -1,6 +1,5 @@
 {
   "compilerOptions": {
-    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
     "target": "ES2020",
     "useDefineForClassFields": true,
     "module": "ESNext",
diff --git a/tsconfig.node.json b/tsconfig.node.json
index 1cbc876..629fb56 100644
--- a/tsconfig.node.json
+++ b/tsconfig.node.json
@@ -1,6 +1,5 @@
 {
   "compilerOptions": {
-    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo",
     "target": "ES2022",
     "lib": ["ES2023"],
     "module": "ESNext",