diff --git a/src/basic_memory/mcp/tools/build_context.py b/src/basic_memory/mcp/tools/build_context.py
index e6c3da0b5..e1b90bf95 100644
--- a/src/basic_memory/mcp/tools/build_context.py
+++ b/src/basic_memory/mcp/tools/build_context.py
@@ -134,9 +134,12 @@ def _format_context_markdown(graph: GraphContext, project: str) -> str:
     Format options:
     - "json" (default): Structured JSON with internal fields excluded
     - "text": Compact markdown text for LLM consumption
+
+    Queries the Basic Memory knowledge base API — see
+    https://docs.basicmemory.com/concepts/memory-urls
     """,
     tags={"navigation", "notes"},
-    annotations={"readOnlyHint": True, "openWorldHint": False},
+    annotations={"title": "Build Context", "readOnlyHint": True, "openWorldHint": False},
 )
 async def build_context(
     url: Annotated[
diff --git a/src/basic_memory/mcp/tools/canvas.py b/src/basic_memory/mcp/tools/canvas.py
index 0a54aeb29..acc7f186e 100644
--- a/src/basic_memory/mcp/tools/canvas.py
+++ b/src/basic_memory/mcp/tools/canvas.py
@@ -20,7 +20,14 @@
     title="Create Canvas",
     description="Create an Obsidian canvas file to visualize concepts and connections.",
     tags={"canvas", "notes"},
-    annotations={"destructiveHint": False, "idempotentHint": True, "openWorldHint": False},
+    annotations={
+        "title": "Create Canvas",
+        "readOnlyHint": False,
+        # Falls back to PUT when the canvas already exists, replacing its content.
+        "destructiveHint": True,
+        "idempotentHint": True,
+        "openWorldHint": False,
+    },
 )
 async def canvas(
     nodes: Annotated[List[Dict[str, Any]], BeforeValidator(coerce_list)],
diff --git a/src/basic_memory/mcp/tools/chatgpt_tools.py b/src/basic_memory/mcp/tools/chatgpt_tools.py
index bd510ee8a..1b0193b60 100644
--- a/src/basic_memory/mcp/tools/chatgpt_tools.py
+++ b/src/basic_memory/mcp/tools/chatgpt_tools.py
@@ -108,7 +108,7 @@ def _format_document_for_chatgpt(
     title="Search Knowledge Base",
     description="Search for content across the knowledge base",
     tags={"search"},
-    annotations={"readOnlyHint": True, "openWorldHint": False},
+    annotations={"title": "Search Knowledge Base", "readOnlyHint": True, "openWorldHint": False},
 )
 async def search(
     query: str,
@@ -172,7 +172,7 @@ async def search(
     title="Fetch Document",
     description="Fetch the full contents of a search result document",
     tags={"search", "notes"},
-    annotations={"readOnlyHint": True, "openWorldHint": False},
+    annotations={"title": "Fetch Document", "readOnlyHint": True, "openWorldHint": False},
 )
 async def fetch(
     id: str,
diff --git a/src/basic_memory/mcp/tools/cloud_info.py b/src/basic_memory/mcp/tools/cloud_info.py
index 69af0b811..76b637f09 100644
--- a/src/basic_memory/mcp/tools/cloud_info.py
+++ b/src/basic_memory/mcp/tools/cloud_info.py
@@ -8,7 +8,7 @@
     "cloud_info",
     title="Cloud Info",
     tags={"cloud"},
-    annotations={"readOnlyHint": True, "openWorldHint": False},
+    annotations={"title": "Cloud Info", "readOnlyHint": True, "openWorldHint": False},
 )
 def cloud_info() -> str:
     """Return optional Basic Memory Cloud information and setup guidance."""
diff --git a/src/basic_memory/mcp/tools/delete_note.py b/src/basic_memory/mcp/tools/delete_note.py
index 0c8076bb5..1887e0d93 100644
--- a/src/basic_memory/mcp/tools/delete_note.py
+++ b/src/basic_memory/mcp/tools/delete_note.py
@@ -185,7 +185,12 @@ def _directory_path_for_delete(
     title="Delete Note",
     description="Delete a note or directory by title, permalink, or path",
     tags={"notes"},
-    annotations={"destructiveHint": True, "openWorldHint": False},
+    annotations={
+        "title": "Delete Note",
+        "readOnlyHint": False,
+        "destructiveHint": True,
+        "openWorldHint": False,
+    },
 )
 async def delete_note(
     identifier: str,
diff --git a/src/basic_memory/mcp/tools/edit_note.py b/src/basic_memory/mcp/tools/edit_note.py
index 6d77d4796..79122a6a3 100644
--- a/src/basic_memory/mcp/tools/edit_note.py
+++ b/src/basic_memory/mcp/tools/edit_note.py
@@ -307,7 +307,14 @@ def _format_error_response(
     title="Edit Note",
     description="Edit an existing markdown note using various operations like append, prepend, find_replace, replace_section, insert_before_section, or insert_after_section.",
     tags={"notes"},
-    annotations={"destructiveHint": False, "openWorldHint": False},
+    annotations={
+        "title": "Edit Note",
+        "readOnlyHint": False,
+        # find_replace and replace_section overwrite existing content, so the tool
+        # as a whole is not purely additive even though append/prepend are.
+        "destructiveHint": True,
+        "openWorldHint": False,
+    },
 )
 async def edit_note(
     identifier: str,
diff --git a/src/basic_memory/mcp/tools/list_directory.py b/src/basic_memory/mcp/tools/list_directory.py
index 68f471c0c..10bd559fc 100644
--- a/src/basic_memory/mcp/tools/list_directory.py
+++ b/src/basic_memory/mcp/tools/list_directory.py
@@ -14,7 +14,7 @@
     title="List Directory",
     description="List directory contents with filtering and depth control.",
     tags={"navigation", "notes"},
-    annotations={"readOnlyHint": True, "openWorldHint": False},
+    annotations={"title": "List Directory", "readOnlyHint": True, "openWorldHint": False},
 )
 async def list_directory(
     # `dir_name` is unusual; models reach for directory/folder/path/dir.
diff --git a/src/basic_memory/mcp/tools/move_note.py b/src/basic_memory/mcp/tools/move_note.py
index 67316ad29..aa0d4440b 100644
--- a/src/basic_memory/mcp/tools/move_note.py
+++ b/src/basic_memory/mcp/tools/move_note.py
@@ -360,7 +360,12 @@ def _format_move_error_response(error_message: str, identifier: str, destination
     title="Move Note",
     description="Move a note or directory to a new location, updating database and maintaining links.",
     tags={"notes"},
-    annotations={"destructiveHint": False, "openWorldHint": False},
+    annotations={
+        "title": "Move Note",
+        "readOnlyHint": False,
+        "destructiveHint": False,
+        "openWorldHint": False,
+    },
 )
 async def move_note(
     identifier: str,
diff --git a/src/basic_memory/mcp/tools/project_management.py b/src/basic_memory/mcp/tools/project_management.py
index fd14d5651..94aa35586 100644
--- a/src/basic_memory/mcp/tools/project_management.py
+++ b/src/basic_memory/mcp/tools/project_management.py
@@ -359,7 +359,7 @@ def _format_project_list_json(
     "list_memory_projects",
     title="List Memory Projects",
     tags={"projects"},
-    annotations={"readOnlyHint": True, "openWorldHint": False},
+    annotations={"title": "List Memory Projects", "readOnlyHint": True, "openWorldHint": False},
 )
 async def list_memory_projects(
     output_format: Literal["text", "json"] = "text",
@@ -503,7 +503,12 @@ async def _resolve_workspace_routing(
     "create_memory_project",
     title="Create Memory Project",
     tags={"projects"},
-    annotations={"destructiveHint": False, "openWorldHint": False},
+    annotations={
+        "title": "Create Memory Project",
+        "readOnlyHint": False,
+        "destructiveHint": False,
+        "openWorldHint": False,
+    },
 )
 async def create_memory_project(
     project_name: str,
@@ -647,7 +652,12 @@ async def create_memory_project(
 @mcp.tool(
     title="Delete Project",
     tags={"projects"},
-    annotations={"destructiveHint": True, "openWorldHint": False},
+    annotations={
+        "title": "Delete Project",
+        "readOnlyHint": False,
+        "destructiveHint": True,
+        "openWorldHint": False,
+    },
 )
 async def delete_project(
     project_name: str,
diff --git a/src/basic_memory/mcp/tools/read_content.py b/src/basic_memory/mcp/tools/read_content.py
index 2e44710f5..3c3f0aa4d 100644
--- a/src/basic_memory/mcp/tools/read_content.py
+++ b/src/basic_memory/mcp/tools/read_content.py
@@ -156,9 +156,12 @@ def optimize_image(img, content_length, max_output_bytes=350000):
 
 @mcp.tool(
     title="Read Content",
-    description="Read a file's raw content by path or permalink",
+    description=(
+        "Read a file's raw content by path or permalink. Paths resolve against the Basic "
+        "Memory knowledge base API — see https://docs.basicmemory.com/local/mcp-tools-local"
+    ),
     tags={"notes"},
-    annotations={"readOnlyHint": True, "openWorldHint": False},
+    annotations={"title": "Read Content", "readOnlyHint": True, "openWorldHint": False},
 )
 async def read_content(
     path: Annotated[
diff --git a/src/basic_memory/mcp/tools/read_note.py b/src/basic_memory/mcp/tools/read_note.py
index 6e06b60d1..9fcb4fffc 100644
--- a/src/basic_memory/mcp/tools/read_note.py
+++ b/src/basic_memory/mcp/tools/read_note.py
@@ -79,7 +79,7 @@ def _parse_opening_frontmatter(content: str) -> tuple[str, dict | None]:
     tags={"notes"},
     # TODO: re-enable once MCP client rendering is working
     # meta={"ui/resourceUri": "ui://basic-memory/note-preview"},
-    annotations={"readOnlyHint": True, "openWorldHint": False},
+    annotations={"title": "Read Note", "readOnlyHint": True, "openWorldHint": False},
 )
 async def read_note(
     identifier: str,
diff --git a/src/basic_memory/mcp/tools/recent_activity.py b/src/basic_memory/mcp/tools/recent_activity.py
index c20a662e8..95e64db8c 100644
--- a/src/basic_memory/mcp/tools/recent_activity.py
+++ b/src/basic_memory/mcp/tools/recent_activity.py
@@ -38,7 +38,7 @@
     Or standard formats like "7d"
     """,
     tags={"navigation", "notes"},
-    annotations={"readOnlyHint": True, "openWorldHint": False},
+    annotations={"title": "Recent Activity", "readOnlyHint": True, "openWorldHint": False},
 )
 async def recent_activity(
     type: Annotated[
diff --git a/src/basic_memory/mcp/tools/release_notes.py b/src/basic_memory/mcp/tools/release_notes.py
index 28a0d8ba1..9628033ed 100644
--- a/src/basic_memory/mcp/tools/release_notes.py
+++ b/src/basic_memory/mcp/tools/release_notes.py
@@ -8,7 +8,7 @@
     "release_notes",
     title="Release Notes",
     tags={"cloud"},
-    annotations={"readOnlyHint": True, "openWorldHint": False},
+    annotations={"title": "Release Notes", "readOnlyHint": True, "openWorldHint": False},
 )
 def release_notes() -> str:
     """Return the latest product release notes for optional user review."""
diff --git a/src/basic_memory/mcp/tools/schema.py b/src/basic_memory/mcp/tools/schema.py
index ce5c046ef..862089258 100644
--- a/src/basic_memory/mcp/tools/schema.py
+++ b/src/basic_memory/mcp/tools/schema.py
@@ -207,7 +207,7 @@ def _no_schema_guidance(note_type: str, tool_name: str) -> str:
     title="Validate Schema",
     description="Validate notes against their Picoschema definitions.",
     tags={"schema"},
-    annotations={"readOnlyHint": True, "openWorldHint": False},
+    annotations={"title": "Validate Schema", "readOnlyHint": True, "openWorldHint": False},
 )
 async def schema_validate(
     note_type: Optional[str] = None,
@@ -322,7 +322,7 @@ async def schema_validate(
     title="Infer Schema",
     description="Analyze existing notes and suggest a Picoschema definition.",
     tags={"schema"},
-    annotations={"readOnlyHint": True, "openWorldHint": False},
+    annotations={"title": "Infer Schema", "readOnlyHint": True, "openWorldHint": False},
 )
 async def schema_infer(
     note_type: str,
@@ -445,7 +445,7 @@ async def schema_infer(
     title="Schema Diff",
     description="Detect drift between a schema definition and actual note usage.",
     tags={"schema"},
-    annotations={"readOnlyHint": True, "openWorldHint": False},
+    annotations={"title": "Schema Diff", "readOnlyHint": True, "openWorldHint": False},
 )
 async def schema_diff(
     note_type: str,
diff --git a/src/basic_memory/mcp/tools/search.py b/src/basic_memory/mcp/tools/search.py
index ae674fd83..8ea52de2b 100644
--- a/src/basic_memory/mcp/tools/search.py
+++ b/src/basic_memory/mcp/tools/search.py
@@ -617,7 +617,7 @@ async def _search_all_projects(
     tags={"search"},
     # TODO: re-enable once MCP client rendering is working
     # meta={"ui/resourceUri": "ui://basic-memory/search-results"},
-    annotations={"readOnlyHint": True, "openWorldHint": False},
+    annotations={"title": "Search Notes", "readOnlyHint": True, "openWorldHint": False},
 )
 async def search_notes(
     # Accept common search-query aliases models reach for from training data.
diff --git a/src/basic_memory/mcp/tools/ui_sdk.py b/src/basic_memory/mcp/tools/ui_sdk.py
index e45313d49..f646fd4e9 100644
--- a/src/basic_memory/mcp/tools/ui_sdk.py
+++ b/src/basic_memory/mcp/tools/ui_sdk.py
@@ -22,7 +22,7 @@ def _text_block(message: str) -> List[ContentBlock]:
     description="Search notes and return an embedded MCP-UI resource (raw HTML).",
     tags={"search", "ui"},
     output_schema=None,
-    annotations={"readOnlyHint": True, "openWorldHint": False},
+    annotations={"title": "Search Notes (UI)", "readOnlyHint": True, "openWorldHint": False},
 )
 async def search_notes_ui(
     query: str,
@@ -98,7 +98,7 @@ async def search_notes_ui(
     description="Read a note and return an embedded MCP-UI resource (raw HTML).",
     tags={"notes", "ui"},
     output_schema=None,
-    annotations={"readOnlyHint": True, "openWorldHint": False},
+    annotations={"title": "Read Note (UI)", "readOnlyHint": True, "openWorldHint": False},
 )
 async def read_note_ui(
     identifier: str,
diff --git a/src/basic_memory/mcp/tools/view_note.py b/src/basic_memory/mcp/tools/view_note.py
index b7613b0bf..04c727b46 100644
--- a/src/basic_memory/mcp/tools/view_note.py
+++ b/src/basic_memory/mcp/tools/view_note.py
@@ -14,7 +14,7 @@
     title="View Note",
     description="View a note as a formatted artifact for better readability.",
     tags={"notes"},
-    annotations={"readOnlyHint": True, "openWorldHint": False},
+    annotations={"title": "View Note", "readOnlyHint": True, "openWorldHint": False},
 )
 async def view_note(
     identifier: str,
diff --git a/src/basic_memory/mcp/tools/workspaces.py b/src/basic_memory/mcp/tools/workspaces.py
index fc54fad4a..384fc7390 100644
--- a/src/basic_memory/mcp/tools/workspaces.py
+++ b/src/basic_memory/mcp/tools/workspaces.py
@@ -48,7 +48,7 @@ def _workspace_list_response(workspaces: list[WorkspaceInfo]) -> WorkspaceListRe
     title="List Workspaces",
     description="List available cloud workspaces (tenant_id, type, role, and name).",
     tags={"cloud", "projects"},
-    annotations={"readOnlyHint": True, "openWorldHint": False},
+    annotations={"title": "List Workspaces", "readOnlyHint": True, "openWorldHint": False},
 )
 async def list_workspaces(
     output_format: Literal["text", "json"] = "text",
diff --git a/src/basic_memory/mcp/tools/write_note.py b/src/basic_memory/mcp/tools/write_note.py
index c618ef859..ae3d27986 100644
--- a/src/basic_memory/mcp/tools/write_note.py
+++ b/src/basic_memory/mcp/tools/write_note.py
@@ -58,7 +58,13 @@ def _compose_workspace_project_route(
     title="Write Note",
     description="Create a markdown note. If the note already exists, returns an error by default — pass overwrite=True to replace.",
     tags={"notes"},
-    annotations={"destructiveHint": True, "idempotentHint": False, "openWorldHint": False},
+    annotations={
+        "title": "Write Note",
+        "readOnlyHint": False,
+        "destructiveHint": True,
+        "idempotentHint": False,
+        "openWorldHint": False,
+    },
 )
 async def write_note(
     title: str,
diff --git a/tests/mcp/test_tool_contracts.py b/tests/mcp/test_tool_contracts.py
index 753801961..c589706e9 100644
--- a/tests/mcp/test_tool_contracts.py
+++ b/tests/mcp/test_tool_contracts.py
@@ -120,6 +120,52 @@
 }
 
 
+# Anthropic directory review requirements (connectors/building/review-criteria):
+# every tool must set annotations.title, read-only tools must set readOnlyHint=True,
+# and write tools must set an explicit readOnlyHint=False plus a destructiveHint.
+EXPECTED_TOOL_ANNOTATIONS: dict[str, dict[str, bool]] = {
+    "build_context": {"readOnlyHint": True},
+    "cloud_info": {"readOnlyHint": True},
+    "fetch": {"readOnlyHint": True},
+    "list_directory": {"readOnlyHint": True},
+    "list_memory_projects": {"readOnlyHint": True},
+    "list_workspaces": {"readOnlyHint": True},
+    "read_content": {"readOnlyHint": True},
+    "read_note": {"readOnlyHint": True},
+    "recent_activity": {"readOnlyHint": True},
+    "release_notes": {"readOnlyHint": True},
+    "schema_diff": {"readOnlyHint": True},
+    "schema_infer": {"readOnlyHint": True},
+    "schema_validate": {"readOnlyHint": True},
+    "search": {"readOnlyHint": True},
+    "search_notes": {"readOnlyHint": True},
+    "view_note": {"readOnlyHint": True},
+    # canvas falls back to PUT when the file already exists, replacing its content.
+    "canvas": {"readOnlyHint": False, "destructiveHint": True},
+    # create_memory_project is purely additive: it creates a new project and errors
+    # if the target already exists.
+    "create_memory_project": {"readOnlyHint": False, "destructiveHint": False},
+    "delete_note": {"readOnlyHint": False, "destructiveHint": True},
+    "delete_project": {"readOnlyHint": False, "destructiveHint": True},
+    # edit_note's find_replace/replace_section overwrite existing content, so it is
+    # destructive even though append/prepend are additive.
+    "edit_note": {"readOnlyHint": False, "destructiveHint": True},
+    # move_note refuses to overwrite an existing destination and preserves all
+    # content — it relocates and propagates links, so no data can be lost. Keeping
+    # it non-destructive lets clients allowlist bulk lifecycle moves.
+    "move_note": {"readOnlyHint": False, "destructiveHint": False},
+    "write_note": {"readOnlyHint": False, "destructiveHint": True},
+}
+
+# The MCP-UI tools are disabled in tools/__init__.py but register onto the shared
+# server whenever tests import their module directly, so tolerate their presence
+# without requiring it — keeps this contract independent of test execution order.
+OPTIONAL_TOOL_ANNOTATIONS: dict[str, dict[str, bool]] = {
+    "read_note_ui": {"readOnlyHint": True},
+    "search_notes_ui": {"readOnlyHint": True},
+}
+
+
 TOOL_FUNCTIONS: dict[str, object] = {
     "build_context": tools.build_context,
     "canvas": tools.canvas,
@@ -163,6 +209,48 @@ def test_mcp_tool_signatures_are_stable():
         assert _signature_params(tool_obj) == EXPECTED_TOOL_SIGNATURES[tool_name]
 
 
+@pytest.mark.asyncio
+async def test_mcp_tool_annotations_meet_directory_requirements():
+    """Every tool's wire-level ToolAnnotations must satisfy Anthropic directory review.
+
+    The directory validator reads ToolAnnotations (not FastMCP's top-level title), so
+    each tool needs annotations.title, an explicit readOnlyHint, and — for write
+    tools — a destructiveHint. openWorldHint is False across the board because every
+    tool operates on the user's own knowledge base.
+    """
+    tool_list = await mcp.list_tools()
+    tools_by_name = {tool.name: tool for tool in tool_list}
+
+    required = set(EXPECTED_TOOL_ANNOTATIONS)
+    optional = set(OPTIONAL_TOOL_ANNOTATIONS)
+    registered = set(tools_by_name)
+    missing = required - registered
+    unexpected = registered - required - optional
+    assert not missing, f"Tools missing from server: {sorted(missing)}"
+    assert not unexpected, (
+        f"Tools without annotation expectations: {sorted(unexpected)} — "
+        "add them to EXPECTED_TOOL_ANNOTATIONS with directory-compliant annotations"
+    )
+
+    all_expected = {**EXPECTED_TOOL_ANNOTATIONS, **OPTIONAL_TOOL_ANNOTATIONS}
+    for tool_name, tool in tools_by_name.items():
+        expected = all_expected[tool_name]
+        # Assert on the protocol-level payload the directory review actually sees.
+        annotations = tool.to_mcp_tool().annotations
+        assert annotations is not None, f"Tool '{tool_name}' has no annotations"
+        assert annotations.title, f"Tool '{tool_name}' is missing annotations.title"
+        assert annotations.readOnlyHint is expected["readOnlyHint"], (
+            f"Tool '{tool_name}' readOnlyHint should be {expected['readOnlyHint']}"
+        )
+        if expected["readOnlyHint"] is False:
+            assert annotations.destructiveHint is expected["destructiveHint"], (
+                f"Tool '{tool_name}' destructiveHint should be {expected['destructiveHint']}"
+            )
+        assert annotations.openWorldHint is False, (
+            f"Tool '{tool_name}' openWorldHint should be False"
+        )
+
+
 @pytest.mark.asyncio
 async def test_mcp_tools_have_title_and_tags():
     """Every registered MCP tool must declare a human-readable title and at least one tag.