diff --git a/actions/setup/js/check_membership.test.cjs b/actions/setup/js/check_membership.test.cjs
index 8ec71b5c74..81d61457d3 100644
--- a/actions/setup/js/check_membership.test.cjs
+++ b/actions/setup/js/check_membership.test.cjs
@@ -50,6 +50,7 @@ describe("check_membership.cjs", () => {
     delete global.github;
     delete global.context;
     delete process.env.GH_AW_REQUIRED_ROLES;
+    delete process.env.GH_AW_ALLOWED_BOTS;
   });
 
   const runScript = async () => {
@@ -314,4 +315,86 @@ describe("check_membership.cjs", () => {
       expect(mockCore.info).toHaveBeenCalledWith("✅ User has write access to repository");
     });
   });
+
+  describe("bots allowlist", () => {
+    beforeEach(() => {
+      process.env.GH_AW_REQUIRED_ROLES = "write";
+      mockContext.actor = "greptile-apps";
+    });
+
+    it("should authorize a bot in the allowlist when [bot] form is active on the repo", async () => {
+      process.env.GH_AW_ALLOWED_BOTS = "greptile-apps";
+
+      mockGithub.rest.repos.getCollaboratorPermissionLevel
+        .mockResolvedValueOnce({ data: { permission: "none" } }) // initial permission check
+        .mockResolvedValueOnce({ data: { permission: "none" } }); // bot status check ([bot] form)
+
+      await runScript();
+
+      expect(mockCore.setOutput).toHaveBeenCalledWith("is_team_member", "true");
+      expect(mockCore.setOutput).toHaveBeenCalledWith("result", "authorized_bot");
+      expect(mockCore.setOutput).toHaveBeenCalledWith("user_permission", "bot");
+    });
+
+    it("should authorize a bot in the allowlist when [bot] form returns 404 but slug form is active", async () => {
+      process.env.GH_AW_ALLOWED_BOTS = "greptile-apps";
+
+      const notFoundError = { status: 404, message: "Not Found" };
+      mockGithub.rest.repos.getCollaboratorPermissionLevel
+        .mockResolvedValueOnce({ data: { permission: "none" } }) // initial permission check (slug form)
+        .mockRejectedValueOnce(notFoundError) // bot status [bot] form → 404
+        .mockResolvedValueOnce({ data: { permission: "none" } }); // bot status slug fallback → none
+
+      await runScript();
+
+      expect(mockCore.info).toHaveBeenCalledWith("Actor 'greptile-apps' is in the allowed bots list");
+      expect(mockCore.setOutput).toHaveBeenCalledWith("is_team_member", "true");
+      expect(mockCore.setOutput).toHaveBeenCalledWith("result", "authorized_bot");
+      expect(mockCore.setOutput).toHaveBeenCalledWith("user_permission", "bot");
+    });
+
+    it("should deny a bot in the allowlist when both [bot] and slug forms return 404", async () => {
+      process.env.GH_AW_ALLOWED_BOTS = "greptile-apps";
+
+      const notFoundError = { status: 404, message: "Not Found" };
+      mockGithub.rest.repos.getCollaboratorPermissionLevel
+        .mockResolvedValueOnce({ data: { permission: "none" } }) // initial permission check
+        .mockRejectedValue(notFoundError); // bot status checks all return 404
+
+      await runScript();
+
+      expect(mockCore.warning).toHaveBeenCalledWith("Bot 'greptile-apps' is in the allowed list but not active/installed on testorg/testrepo");
+      expect(mockCore.setOutput).toHaveBeenCalledWith("is_team_member", "false");
+      expect(mockCore.setOutput).toHaveBeenCalledWith("result", "bot_not_active");
+    });
+
+    it("should deny a bot not in the allowlist", async () => {
+      process.env.GH_AW_ALLOWED_BOTS = "some-other-bot";
+
+      mockGithub.rest.repos.getCollaboratorPermissionLevel.mockResolvedValue({
+        data: { permission: "none" },
+      });
+
+      await runScript();
+
+      expect(mockCore.setOutput).toHaveBeenCalledWith("is_team_member", "false");
+      expect(mockCore.setOutput).toHaveBeenCalledWith("result", "insufficient_permissions");
+    });
+
+    it("should authorize a bot with [bot] suffix in the allowlist via slug fallback", async () => {
+      process.env.GH_AW_ALLOWED_BOTS = "copilot";
+      mockContext.actor = "copilot[bot]";
+
+      const notFoundError = { status: 404, message: "Not Found" };
+      mockGithub.rest.repos.getCollaboratorPermissionLevel
+        .mockResolvedValueOnce({ data: { permission: "none" } }) // initial permission check
+        .mockRejectedValueOnce(notFoundError) // bot status [bot] form → 404
+        .mockResolvedValueOnce({ data: { permission: "none" } }); // bot status slug fallback → none
+
+      await runScript();
+
+      expect(mockCore.setOutput).toHaveBeenCalledWith("is_team_member", "true");
+      expect(mockCore.setOutput).toHaveBeenCalledWith("result", "authorized_bot");
+    });
+  });
 });
diff --git a/actions/setup/js/check_permissions_utils.cjs b/actions/setup/js/check_permissions_utils.cjs
index d78f3674a9..526dfe9f4b 100644
--- a/actions/setup/js/check_permissions_utils.cjs
+++ b/actions/setup/js/check_permissions_utils.cjs
@@ -59,8 +59,8 @@ async function checkBotStatus(actor, owner, repo) {
   try {
     // GitHub Apps can appear as either <slug> or <slug>[bot].
     // Treat both forms as a bot identity; always query the API with the [bot] form.
-    const actorHasBotSuffix = actor.endsWith("[bot]");
-    const actorForApi = actorHasBotSuffix ? actor : `${actor}[bot]`;
+    const actorSlug = canonicalizeBotIdentifier(actor);
+    const actorForApi = actor.endsWith("[bot]") ? actor : `${actorSlug}[bot]`;
 
     core.info(`Checking if bot '${actor}' is active on ${owner}/${repo}`);
 
@@ -77,11 +77,29 @@ async function checkBotStatus(actor, owner, repo) {
       core.info(`Bot '${actor}' is active with permission level: ${botPermission.data.permission}`);
       return { isBot: true, isActive: true };
     } catch (botError) {
-      // If we get a 404, the bot is not installed/active on this repository
+      // If we get a 404, the [bot]-suffixed form may not be listed as a collaborator.
+      // Fall back to checking the non-[bot] (slug) form, as some GitHub Apps appear
+      // under their plain slug name rather than the [bot]-suffixed form.
       // @ts-expect-error - Error handling with optional chaining
       if (botError?.status === 404) {
-        core.warning(`Bot '${actor}' is not active/installed on ${owner}/${repo}`);
-        return { isBot: true, isActive: false };
+        try {
+          const slugPermission = await github.rest.repos.getCollaboratorPermissionLevel({
+            owner,
+            repo,
+            username: actorSlug,
+          });
+          core.info(`Bot '${actor}' is active (via slug form) with permission level: ${slugPermission.data.permission}`);
+          return { isBot: true, isActive: true };
+        } catch (slugError) {
+          // @ts-expect-error - Error handling with optional chaining
+          if (slugError?.status === 404) {
+            core.warning(`Bot '${actor}' is not active/installed on ${owner}/${repo}`);
+            return { isBot: true, isActive: false };
+          }
+          const errorMessage = getErrorMessage(slugError);
+          core.warning(`Failed to check bot status: ${errorMessage}`);
+          return { isBot: true, isActive: false, error: errorMessage };
+        }
       }
       // For other errors, we'll treat as inactive to be safe
       const errorMessage = getErrorMessage(botError);
diff --git a/actions/setup/js/check_permissions_utils.test.cjs b/actions/setup/js/check_permissions_utils.test.cjs
index c745ff0572..98ca23b5b8 100644
--- a/actions/setup/js/check_permissions_utils.test.cjs
+++ b/actions/setup/js/check_permissions_utils.test.cjs
@@ -458,5 +458,76 @@ describe("check_permissions_utils", () => {
       expect(result.isBot).toBe(true);
       expect(result.isActive).toBe(true);
     });
+
+    it("should fall back to slug form when [bot] form is not found as collaborator", async () => {
+      const notFoundError = { status: 404, message: "Not Found" };
+      mockGithub.rest.repos.getCollaboratorPermissionLevel
+        .mockRejectedValueOnce(notFoundError) // [bot] form returns 404
+        .mockResolvedValueOnce({ data: { permission: "none" } }); // slug form returns none
+
+      const result = await checkBotStatus("greptile-apps", "testowner", "testrepo");
+
+      expect(result).toEqual({ isBot: true, isActive: true });
+
+      // Verify [bot] form was tried first
+      expect(mockGithub.rest.repos.getCollaboratorPermissionLevel).toHaveBeenNthCalledWith(1, {
+        owner: "testowner",
+        repo: "testrepo",
+        username: "greptile-apps[bot]",
+      });
+      // Verify slug form was tried as fallback
+      expect(mockGithub.rest.repos.getCollaboratorPermissionLevel).toHaveBeenNthCalledWith(2, {
+        owner: "testowner",
+        repo: "testrepo",
+        username: "greptile-apps",
+      });
+      expect(mockCore.info).toHaveBeenCalledWith("Bot 'greptile-apps' is active (via slug form) with permission level: none");
+    });
+
+    it("should fall back to slug form when actor has [bot] suffix and [bot] form is not found", async () => {
+      const notFoundError = { status: 404, message: "Not Found" };
+      mockGithub.rest.repos.getCollaboratorPermissionLevel
+        .mockRejectedValueOnce(notFoundError) // [bot] form returns 404
+        .mockResolvedValueOnce({ data: { permission: "none" } }); // slug form returns none
+
+      const result = await checkBotStatus("copilot[bot]", "testowner", "testrepo");
+
+      expect(result).toEqual({ isBot: true, isActive: true });
+
+      expect(mockGithub.rest.repos.getCollaboratorPermissionLevel).toHaveBeenNthCalledWith(1, {
+        owner: "testowner",
+        repo: "testrepo",
+        username: "copilot[bot]",
+      });
+      expect(mockGithub.rest.repos.getCollaboratorPermissionLevel).toHaveBeenNthCalledWith(2, {
+        owner: "testowner",
+        repo: "testrepo",
+        username: "copilot",
+      });
+      expect(mockCore.info).toHaveBeenCalledWith("Bot 'copilot[bot]' is active (via slug form) with permission level: none");
+    });
+
+    it("should return inactive when both [bot] and slug forms return 404", async () => {
+      const notFoundError = { status: 404, message: "Not Found" };
+      mockGithub.rest.repos.getCollaboratorPermissionLevel.mockRejectedValue(notFoundError);
+
+      const result = await checkBotStatus("unknown-app", "testowner", "testrepo");
+
+      expect(result).toEqual({ isBot: true, isActive: false });
+      expect(mockCore.warning).toHaveBeenCalledWith("Bot 'unknown-app' is not active/installed on testowner/testrepo");
+    });
+
+    it("should return inactive with error when slug form returns non-404 error", async () => {
+      const notFoundError = { status: 404, message: "Not Found" };
+      const rateLimit = new Error("API rate limit exceeded");
+      mockGithub.rest.repos.getCollaboratorPermissionLevel
+        .mockRejectedValueOnce(notFoundError) // [bot] form returns 404
+        .mockRejectedValueOnce(rateLimit); // slug form returns rate limit error
+
+      const result = await checkBotStatus("greptile-apps", "testowner", "testrepo");
+
+      expect(result).toEqual({ isBot: true, isActive: false, error: "API rate limit exceeded" });
+      expect(mockCore.warning).toHaveBeenCalledWith("Failed to check bot status: API rate limit exceeded");
+    });
   });
 });