Include external_id in create_memory_project response

Previously the JSON and text responses from create_memory_project omitted
external_id (UUID), forcing callers that just created a project to make a
second list_memory_projects() round-trip before they could use UUID routing
via the new project_id parameter.

Both code paths now include it:
- already-exists branch: returns existing_match.external_id
- new-project branch: returns status_response.new_project.external_id
- text output: adds "External ID:" line to Project Details

Tests cover:
- already-exists JSON path returns valid external_id string
- create-new JSON path returns valid external_id string
- text output includes "External ID:" line

Signed-off-by: phernandez <paul@basicmachines.co>

Author: phernandez

src/basic_memory/mcp/tools/project_management.py

@@ -463,6 +463,7 @@ async def create_memory_project(
             if output_format == "json":
                 return {
                     "name": existing_match.name,
+                    "external_id": existing_match.external_id,
                     "path": existing_match.path,
                     "is_default": is_default,
                     "created": False,
@@ -472,6 +473,7 @@ async def create_memory_project(
                 f"✓ Project already exists: {existing_match.name}\n\n"
                 f"Project Details:\n"
                 f"• Name: {existing_match.name}\n"
+                f"• External ID: {existing_match.external_id}\n"
                 f"• Path: {existing_match.path}\n"
                 f"{'• Set as default project\n' if is_default else ''}"
                 "\nProject is already available for use in tool calls.\n"
@@ -486,6 +488,7 @@ async def create_memory_project(
             new_project = status_response.new_project
             return {
                 "name": new_project.name if new_project else project_name,
+                "external_id": new_project.external_id if new_project else None,
                 "path": new_project.path if new_project else project_path,
                 "is_default": bool(
                     (new_project.is_default if new_project else False) or set_default
@@ -499,6 +502,7 @@ async def create_memory_project(
         if status_response.new_project:
             result += "Project Details:\n"
             result += f"• Name: {status_response.new_project.name}\n"
+            result += f"• External ID: {status_response.new_project.external_id}\n"
             result += f"• Path: {status_response.new_project.path}\n"
 
             if set_default:

tests/mcp/test_tool_json_output_modes.py

@@ -215,6 +215,9 @@ async def test_list_and_create_project_text_and_json_modes(app, test_project, tm
     )
     assert isinstance(create_text, str)
     assert "mode-create-project" in create_text
+    # external_id should appear in the human-readable output too, so users see
+    # the UUID without re-listing projects.
+    assert "External ID:" in create_text
 
     create_json_again = await create_memory_project(
         project_name=project_name,
@@ -227,6 +230,24 @@ async def test_list_and_create_project_text_and_json_modes(app, test_project, tm
     assert Path(create_json_again["path"]) == Path(project_path)
     assert create_json_again["created"] is False
     assert create_json_again["already_exists"] is True
+    # external_id (UUID) must be present so callers can immediately use it as
+    # project_id in subsequent tool calls without a list_memory_projects() round-trip.
+    assert isinstance(create_json_again["external_id"], str)
+    assert len(create_json_again["external_id"]) > 0
+
+    # Verify create-new JSON path also returns external_id (not just already-exists).
+    new_project_name = "mode-create-fresh"
+    new_project_path = str(tmp_path.parent / (tmp_path.name + "-projects") / "mode-create-fresh")
+    create_json_new = await create_memory_project(
+        project_name=new_project_name,
+        project_path=new_project_path,
+        output_format="json",
+    )
+    assert isinstance(create_json_new, dict)
+    assert create_json_new["created"] is True
+    assert create_json_new["already_exists"] is False
+    assert isinstance(create_json_new["external_id"], str)
+    assert len(create_json_new["external_id"]) > 0
 
     default_project_name = "mode-default-project"
     default_project_path = str(