diff --git a/actions/setup/js/create_project.cjs b/actions/setup/js/create_project.cjs
index ebe8f46178..8e257a60fb 100644
--- a/actions/setup/js/create_project.cjs
+++ b/actions/setup/js/create_project.cjs
@@ -459,6 +459,11 @@ async function main(config = {}, githubClient = null) {
 
       core.info(`✓ Successfully created project: ${projectInfo.projectUrl}`);
 
+      // Store temporary ID mapping so subsequent operations can reference this project
+      const normalizedTempId = normalizeTemporaryId(temporaryId ?? "");
+      temporaryIdMap.set(normalizedTempId, { projectUrl: projectInfo.projectUrl });
+      core.info(`Stored temporary ID mapping: ${temporaryId} -> ${projectInfo.projectUrl}`);
+
       // Create configured views if any
       if (configuredViews.length > 0) {
         core.info(`Creating ${configuredViews.length} configured view(s) on project: ${projectInfo.projectUrl}`);
@@ -488,6 +493,7 @@ async function main(config = {}, githubClient = null) {
         projectTitle: projectInfo.projectTitle,
         projectUrl: projectInfo.projectUrl,
         itemId: projectInfo.itemId,
+        temporaryId,
       };
     } catch (err) {
       // prettier-ignore
diff --git a/actions/setup/js/create_project_status_update.cjs b/actions/setup/js/create_project_status_update.cjs
index 65e6d70949..6c3e287cfb 100644
--- a/actions/setup/js/create_project_status_update.cjs
+++ b/actions/setup/js/create_project_status_update.cjs
@@ -5,6 +5,7 @@ const { loadAgentOutput } = require("./load_agent_output.cjs");
 const { getErrorMessage } = require("./error_helpers.cjs");
 const { sanitizeContent } = require("./sanitize_content.cjs");
 const { logStagedPreviewInfo } = require("./staged_preview.cjs");
+const { isTemporaryId, normalizeTemporaryId } = require("./temporary_id.cjs");
 const { ERR_CONFIG, ERR_NOT_FOUND, ERR_PARSE, ERR_VALIDATION } = require("./error_codes.cjs");
 
 /**
@@ -328,7 +329,8 @@ async function main(config = {}, githubClient = null) {
 
     // Validate that project field is explicitly provided in the message
     // The project field is required in agent output messages and must be a full GitHub project URL
-    const effectiveProjectUrl = output.project;
+    // or a temporary project ID (e.g., aw_abc123 or #aw_abc123) from create_project
+    let effectiveProjectUrl = output.project;
 
     if (!effectiveProjectUrl || typeof effectiveProjectUrl !== "string" || effectiveProjectUrl.trim() === "") {
       core.error('Missing required "project" field. The agent must explicitly include the project URL in the output message: {"type": "create_project_status_update", "project": "https://github.com/orgs/myorg/projects/42", "body": "..."}');
@@ -338,6 +340,24 @@ async function main(config = {}, githubClient = null) {
       };
     }
 
+    // Resolve temporary project ID if present
+    const projectStr = effectiveProjectUrl.trim();
+    const projectWithoutHash = projectStr.startsWith("#") ? projectStr.substring(1) : projectStr;
+    if (isTemporaryId(projectWithoutHash)) {
+      const normalizedId = normalizeTemporaryId(projectWithoutHash);
+      const resolved = temporaryIdMap.get(normalizedId);
+      if (resolved && typeof resolved === "object" && "projectUrl" in resolved && resolved.projectUrl) {
+        core.info(`Resolved temporary project ID ${projectStr} to ${resolved.projectUrl}`);
+        effectiveProjectUrl = resolved.projectUrl;
+      } else {
+        core.error(`Temporary project ID '${projectStr}' not found. Ensure create_project was called before create_project_status_update.`);
+        return {
+          success: false,
+          error: `${ERR_NOT_FOUND}: Temporary project ID '${projectStr}' not found. Ensure create_project was called before create_project_status_update.`,
+        };
+      }
+    }
+
     if (!output.body) {
       core.error("Missing required field: body (status update content)");
       return {
diff --git a/actions/setup/js/create_project_status_update.test.cjs b/actions/setup/js/create_project_status_update.test.cjs
index 59e18fe63b..bdc8084722 100644
--- a/actions/setup/js/create_project_status_update.test.cjs
+++ b/actions/setup/js/create_project_status_update.test.cjs
@@ -600,4 +600,114 @@ describe("create_project_status_update", () => {
     // Cleanup
     delete process.env.GH_AW_PROJECT_URL;
   });
+
+  it("should resolve a temporary project ID from temporaryIdMap", async () => {
+    mockGithub.graphql
+      .mockResolvedValueOnce({
+        organization: {
+          projectV2: {
+            id: "PVT_test123",
+            number: 42,
+            title: "Test Project",
+            url: "https://github.com/orgs/test-org/projects/42",
+          },
+        },
+      })
+      .mockResolvedValueOnce({
+        createProjectV2StatusUpdate: {
+          statusUpdate: {
+            id: "PVTSU_test123",
+            body: "Test status update",
+            bodyHTML: "<p>Test status update</p>",
+            startDate: "2025-01-01",
+            targetDate: "2025-12-31",
+            status: "ON_TRACK",
+            createdAt: "2025-01-06T12:00:00Z",
+          },
+        },
+      });
+
+    const handler = await main({ max: 10 });
+
+    const temporaryIdMap = new Map();
+    temporaryIdMap.set("aw_abc12345", { projectUrl: "https://github.com/orgs/test-org/projects/42" });
+
+    const result = await handler(
+      {
+        project: "aw_abc12345",
+        body: "Test status update",
+        status: "ON_TRACK",
+        start_date: "2025-01-01",
+        target_date: "2025-12-31",
+      },
+      temporaryIdMap
+    );
+
+    expect(result.success).toBe(true);
+    expect(result.status_update_id).toBe("PVTSU_test123");
+    expect(mockCore.info).toHaveBeenCalledWith(expect.stringContaining("Resolved temporary project ID aw_abc12345"));
+  });
+
+  it("should resolve a temporary project ID with hash prefix from temporaryIdMap", async () => {
+    mockGithub.graphql
+      .mockResolvedValueOnce({
+        organization: {
+          projectV2: {
+            id: "PVT_test123",
+            number: 42,
+            title: "Test Project",
+            url: "https://github.com/orgs/test-org/projects/42",
+          },
+        },
+      })
+      .mockResolvedValueOnce({
+        createProjectV2StatusUpdate: {
+          statusUpdate: {
+            id: "PVTSU_test123",
+            body: "Test status update",
+            bodyHTML: "<p>Test status update</p>",
+            startDate: "2025-01-01",
+            targetDate: "2025-12-31",
+            status: "ON_TRACK",
+            createdAt: "2025-01-06T12:00:00Z",
+          },
+        },
+      });
+
+    const handler = await main({ max: 10 });
+
+    const temporaryIdMap = new Map();
+    temporaryIdMap.set("aw_abc12345", { projectUrl: "https://github.com/orgs/test-org/projects/42" });
+
+    const result = await handler(
+      {
+        project: "#aw_abc12345",
+        body: "Test status update",
+      },
+      temporaryIdMap
+    );
+
+    expect(result.success).toBe(true);
+    expect(result.status_update_id).toBe("PVTSU_test123");
+    expect(mockCore.info).toHaveBeenCalledWith(expect.stringContaining("Resolved temporary project ID #aw_abc12345"));
+  });
+
+  it("should return error when temporary project ID is not found in temporaryIdMap", async () => {
+    const handler = await main({ max: 10 });
+
+    const temporaryIdMap = new Map();
+
+    const result = await handler(
+      {
+        project: "aw_notfound",
+        body: "Test status update",
+      },
+      temporaryIdMap
+    );
+
+    expect(result.success).toBe(false);
+    expect(result.error).toContain("aw_notfound");
+    expect(mockCore.error).toHaveBeenCalledWith(expect.stringContaining("aw_notfound"));
+    expect(mockGithub.graphql).not.toHaveBeenCalled();
+  });
 });