diff --git a/README.md b/README.md
index 8c016ee..811e384 100644
--- a/README.md
+++ b/README.md
@@ -106,12 +106,20 @@ parallel-cli
 │   ├── cancel              # Cancel a monitor (irreversible)
 │   ├── events              # List events for a monitor
 │   └── trigger             # Trigger an immediate one-off run
+├── skills                  # Install, update, and manage Parallel agent skills
+│   ├── install             # Install or update managed Parallel skills
+│   ├── list                # List available Parallel skills
+│   ├── reinstall           # Cleanly reinstall managed Parallel skills
+│   └── uninstall           # Remove only CLI-managed Parallel skills
 └── memory                  # Saved Task, Monitor, and FindAll entries
     ├── retrieve            # Search Memory or list recent entries
     ├── evict               # Remove one entry from Memory
     └── clear               # Permanently clear selected Memory
 ```
 
+Run `parallel-cli skills install` to install or update agent skills. When using
+`--skill`, other managed skills are removed; unmanaged skills are preserved.
+
 ## Quick Start
 
 ### 1. Authenticate
diff --git a/parallel_web_tools/cli/skills.py b/parallel_web_tools/cli/skills.py
index 6b469f4..f0febee 100644
--- a/parallel_web_tools/cli/skills.py
+++ b/parallel_web_tools/cli/skills.py
@@ -33,7 +33,9 @@ def create_skills_group(
 
     @click.group(name="skills")
     def skills() -> None:
-        """Install and manage Parallel agent skills.
+        """Install, update, and manage Parallel agent skills.
+
+        Run parallel-cli skills install to install or update managed skills.
 
         Downloads come from skills.parallel.ai. Set PARALLEL_SKILLS_INDEX_URL to use a custom index.
 
@@ -93,14 +95,14 @@ def skills_list(output_json: bool) -> None:
         "--skill",
         "skill_names",
         multiple=True,
-        help="Skill name to install (repeatable). Defaults to all. Skills not listed will be removed.",
+        help="Skill name to install (repeatable). Defaults to all. Other managed skills will be removed.",
     )
     @click.option("--json", "output_json", is_flag=True, help="Output as JSON")
     def skills_install(project: bool, skill_names: tuple[str, ...], output_json: bool) -> None:
-        """Install Parallel skills from skills.parallel.ai.
+        """Install or update Parallel skills from skills.parallel.ai.
 
         When --skill is provided, the managed install set is replaced with exactly
-        the listed skills.
+        the listed skills. Unmanaged skills are never overwritten or removed.
         """
         from parallel_web_tools.core.skills import (
             SkillsError,
@@ -178,7 +180,7 @@ def skills_uninstall(project: bool, output_json: bool) -> None:
         "--skill",
         "skill_names",
         multiple=True,
-        help="Skill name to reinstall (repeatable). Defaults to all. Skills not listed will be removed.",
+        help="Skill name to reinstall (repeatable). Defaults to all. Other managed skills will be removed.",
     )
     @click.option("--json", "output_json", is_flag=True, help="Output as JSON")
     def skills_reinstall(project: bool, skill_names: tuple[str, ...], output_json: bool) -> None:
diff --git a/tests/test_cli.py b/tests/test_cli.py
index f1b39ed..b4c37f2 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -2432,18 +2432,27 @@ def test_enrich_run_wait_output_file(self, runner, tmp_path):
 
 
 class TestSkillsCommands:
-    def test_skills_help_mentions_cdn_and_replacement_behavior(self, runner):
+    def test_skills_help_mentions_updates_cdn_and_managed_replacement(self, runner):
         result = runner.invoke(main, ["skills", "--help"])
 
         assert result.exit_code == 0
+        help_text = " ".join(result.output.split())
+        assert "parallel-cli skills install to install or update managed skills" in help_text
         assert "skills.parallel.ai" in result.output
         assert "PARALLEL_SKILLS_INDEX_URL" in result.output
 
         result = runner.invoke(main, ["skills", "install", "--help"])
 
         assert result.exit_code == 0
-        assert "Skills not" in result.output
-        assert "listed will be removed" in result.output
+        help_text = " ".join(result.output.split())
+        assert "Install or update Parallel skills" in help_text
+        assert "Unmanaged skills are never overwritten or removed" in help_text
+        assert "Other managed skills will be removed" in help_text
+
+        result = runner.invoke(main, ["skills", "reinstall", "--help"])
+
+        assert result.exit_code == 0
+        assert "Other managed skills will be removed" in " ".join(result.output.split())
 
     def test_skills_list_json(self, runner):
         with (