diff --git a/CHANGELOG.md b/CHANGELOG.md
index 23e1df1f9..b29083e03 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,11 @@
 
 ## Unreleased
 
+- Expanded the TUI slash command overlay catalog to include 67 commands across
+  14 groups, aligned with the specification command reference for session,
+  persona, scope, plan, project, registry/config, context, and utility flows.
+  Added Behave coverage for command and group cardinality plus representative
+  command presence checks. (#1002)
 - Strengthened WF02 trusted-profile integration coverage for automated test
   generation. The helper now validates and incorporates mocked provider output
   (instead of discarding it), asserts all WF02 invariant conventions (test-only
diff --git a/features/steps/tui_slash_command_catalog_steps.py b/features/steps/tui_slash_command_catalog_steps.py
new file mode 100644
index 000000000..fb7c408a5
--- /dev/null
+++ b/features/steps/tui_slash_command_catalog_steps.py
@@ -0,0 +1,28 @@
+"""Step definitions for TUI slash command catalog coverage."""
+
+from __future__ import annotations
+
+from behave import given, then
+
+
+@given("the TUI slash command catalog module is loaded")
+def step_catalog_loaded(context):
+    from cleveragents.tui.slash_catalog import slash_command_groups, slash_command_names
+
+    context._slash_command_names = slash_command_names()
+    context._slash_command_groups = slash_command_groups()
+
+
+@then("the slash command catalog should contain at least {minimum:d} commands")
+def step_catalog_command_count(context, minimum):
+    assert len(context._slash_command_names) >= minimum
+
+
+@then("the slash command catalog should contain exactly {expected:d} groups")
+def step_catalog_group_count(context, expected):
+    assert len(context._slash_command_groups) == expected
+
+
+@then('the slash command catalog should include "{command}"')
+def step_catalog_contains_command(context, command):
+    assert command in context._slash_command_names
diff --git a/features/tui_slash_command_catalog.feature b/features/tui_slash_command_catalog.feature
new file mode 100644
index 000000000..cd61bba5d
--- /dev/null
+++ b/features/tui_slash_command_catalog.feature
@@ -0,0 +1,13 @@
+Feature: TUI Slash Command Catalog
+  Scenario: Slash command catalog enumerates 60+ commands across 14 groups
+    Given the TUI slash command catalog module is loaded
+    Then the slash command catalog should contain at least 60 commands
+    And the slash command catalog should contain exactly 14 groups
+
+  Scenario: Slash command catalog includes representative commands
+    Given the TUI slash command catalog module is loaded
+    Then the slash command catalog should include "session:create"
+    And the slash command catalog should include "plan:rollback"
+    And the slash command catalog should include "project:context:show"
+    And the slash command catalog should include "profile:show"
+    And the slash command catalog should include "settings"
diff --git a/src/cleveragents/tui/app.py b/src/cleveragents/tui/app.py
index 214a058a1..271c908ab 100644
--- a/src/cleveragents/tui/app.py
+++ b/src/cleveragents/tui/app.py
@@ -10,6 +10,7 @@ from typing import TYPE_CHECKING, Any, ClassVar, Protocol
 from cleveragents.tui.input.modes import InputMode, InputModeRouter
 from cleveragents.tui.input.reference_parser import suggestions
 from cleveragents.tui.persona.state import PersonaState
+from cleveragents.tui.slash_catalog import slash_command_names
 from cleveragents.tui.widgets.persona_bar import PersonaBar
 from cleveragents.tui.widgets.prompt import PromptInput
 from cleveragents.tui.widgets.reference_picker import ReferencePickerOverlay
@@ -116,9 +117,7 @@ if _TEXTUAL_AVAILABLE:
             ref_picker = self.query_one("#reference-picker", ReferencePickerOverlay)
             ref_picker.set_suggestions("", [])
             slash = self.query_one("#slash-overlay", SlashCommandOverlay)
-            slash.set_commands(
-                "", ["persona list", "persona set", "session show", "help"]
-            )
+            slash.set_commands("", slash_command_names())
 
         def action_help(self) -> None:
             conversation = self.query_one("#conversation", _Static)
diff --git a/src/cleveragents/tui/slash_catalog.py b/src/cleveragents/tui/slash_catalog.py
new file mode 100644
index 000000000..df65533a1
--- /dev/null
+++ b/src/cleveragents/tui/slash_catalog.py
@@ -0,0 +1,98 @@
+"""Slash command catalog for TUI command overlay."""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+
+
+@dataclass(frozen=True, slots=True)
+class SlashCommandSpec:
+    """Single slash command descriptor."""
+
+    command: str
+    group: str
+    description: str
+
+
+SLASH_COMMAND_SPECS: tuple[SlashCommandSpec, ...] = (
+    SlashCommandSpec("session:create", "Session", "Create a new session tab"),
+    SlashCommandSpec("session:list", "Session", "Display all sessions"),
+    SlashCommandSpec("session:show", "Session", "Show session details"),
+    SlashCommandSpec("session:switch", "Session", "Switch to a session"),
+    SlashCommandSpec("session:close", "Session", "Close the current session"),
+    SlashCommandSpec("session:delete", "Session", "Delete a saved session"),
+    SlashCommandSpec("session:rename", "Session", "Rename current session"),
+    SlashCommandSpec("session:export", "Session", "Export session to JSON"),
+    SlashCommandSpec("session:import", "Session", "Import session from JSON"),
+    SlashCommandSpec("persona:list", "Persona", "Display all personas"),
+    SlashCommandSpec("persona:set", "Persona", "Switch active persona"),
+    SlashCommandSpec("persona:create", "Persona", "Create a persona"),
+    SlashCommandSpec("persona:edit", "Persona", "Edit a persona"),
+    SlashCommandSpec("persona:delete", "Persona", "Delete a persona"),
+    SlashCommandSpec("persona:export", "Persona", "Export persona YAML"),
+    SlashCommandSpec("persona:import", "Persona", "Import persona YAML"),
+    SlashCommandSpec("scope:add", "Scope", "Add scope reference"),
+    SlashCommandSpec("scope:remove", "Scope", "Remove scope reference"),
+    SlashCommandSpec("scope:clear", "Scope", "Clear session scope additions"),
+    SlashCommandSpec("scope:show", "Scope", "Show effective scope"),
+    SlashCommandSpec("plan:use", "Plan", "Start a new plan"),
+    SlashCommandSpec("plan:list", "Plan", "List plans"),
+    SlashCommandSpec("plan:status", "Plan", "Show plan status"),
+    SlashCommandSpec("plan:tree", "Plan", "Show decision tree"),
+    SlashCommandSpec("plan:execute", "Plan", "Execute a plan"),
+    SlashCommandSpec("plan:apply", "Plan", "Apply a completed plan"),
+    SlashCommandSpec("plan:cancel", "Plan", "Cancel a plan"),
+    SlashCommandSpec("plan:diff", "Plan", "Show plan diff"),
+    SlashCommandSpec("plan:correct", "Plan", "Correct a decision"),
+    SlashCommandSpec("plan:resume", "Plan", "Resume a plan"),
+    SlashCommandSpec("plan:revert", "Plan", "Revert plan state"),
+    SlashCommandSpec("plan:rollback", "Plan", "Rollback to checkpoint"),
+    SlashCommandSpec("plan:explain", "Plan", "Explain a decision"),
+    SlashCommandSpec("plan:errors", "Plan", "Show plan errors"),
+    SlashCommandSpec("plan:artifacts", "Plan", "Show plan artifacts"),
+    SlashCommandSpec("plan:inspect", "Plan", "Inspect plan details"),
+    SlashCommandSpec("project:list", "Project", "List projects"),
+    SlashCommandSpec("project:create", "Project", "Create project"),
+    SlashCommandSpec("project:show", "Project", "Show project details"),
+    SlashCommandSpec("project:delete", "Project", "Delete project"),
+    SlashCommandSpec("project:inspect", "Project", "Inspect project details"),
+    SlashCommandSpec("project:context:show", "Project", "Show project context policy"),
+    SlashCommandSpec("actor:list", "Actor", "List actors"),
+    SlashCommandSpec("actor:show", "Actor", "Show actor details"),
+    SlashCommandSpec("actor:set-default", "Actor", "Set default actor"),
+    SlashCommandSpec("resource:list", "Resource", "List resources"),
+    SlashCommandSpec("resource:show", "Resource", "Show resource details"),
+    SlashCommandSpec("resource:tree", "Resource", "Show resource tree"),
+    SlashCommandSpec("resource:inspect", "Resource", "Inspect resource details"),
+    SlashCommandSpec("config:list", "Config", "List config entries"),
+    SlashCommandSpec("config:get", "Config", "Get config value"),
+    SlashCommandSpec("config:set", "Config", "Set config value"),
+    SlashCommandSpec("tool:list", "Tool", "List tools"),
+    SlashCommandSpec("tool:show", "Tool", "Show tool details"),
+    SlashCommandSpec("skill:list", "Skill", "List skills"),
+    SlashCommandSpec("skill:show", "Skill", "Show skill details"),
+    SlashCommandSpec("invariant:list", "Invariant", "List invariants"),
+    SlashCommandSpec("invariant:add", "Invariant", "Add invariant"),
+    SlashCommandSpec("invariant:remove", "Invariant", "Remove invariant"),
+    SlashCommandSpec("profile:list", "Profile", "List automation profiles"),
+    SlashCommandSpec("profile:show", "Profile", "Show automation profile"),
+    SlashCommandSpec("context:inspect", "Context", "Inspect context state"),
+    SlashCommandSpec("context:set", "Context", "Set context policy"),
+    SlashCommandSpec("context:simulate", "Context", "Simulate context assembly"),
+    SlashCommandSpec("clear", "Utility", "Clear conversation display"),
+    SlashCommandSpec("theme", "Utility", "Switch color theme"),
+    SlashCommandSpec("settings", "Utility", "Open settings"),
+    SlashCommandSpec("help", "Utility", "Show help"),
+    SlashCommandSpec("about", "Utility", "Show version information"),
+    SlashCommandSpec("debug", "Utility", "Toggle debug mode"),
+)
+
+
+def slash_command_names() -> list[str]:
+    """Return command names for overlay filtering and completion."""
+    return [spec.command for spec in SLASH_COMMAND_SPECS]
+
+
+def slash_command_groups() -> set[str]:
+    """Return unique slash command groups represented in the catalog."""
+    return {spec.group for spec in SLASH_COMMAND_SPECS}