diff --git a/backend/apps/agents/manager/prompt/prompt_context.py b/backend/apps/agents/manager/prompt/prompt_context.py
index e9d8a75e..c92c3a44 100644
--- a/backend/apps/agents/manager/prompt/prompt_context.py
+++ b/backend/apps/agents/manager/prompt/prompt_context.py
@@ -397,7 +397,7 @@ def build_installed_skills_catalog() -> Optional[str]:
         return None
     try:
         from backend.apps.skills.skills import sync_skills
-        skills = [s for s in sync_skills() if not s.built_in]
+        skills = [s for s in sync_skills() if not s.built_in and s.enabled]
     except Exception:
         return None
     if not skills:
diff --git a/backend/apps/agents/manager/register_builtin_mcp_servers.py b/backend/apps/agents/manager/register_builtin_mcp_servers.py
index aad257b2..f0a69348 100644
--- a/backend/apps/agents/manager/register_builtin_mcp_servers.py
+++ b/backend/apps/agents/manager/register_builtin_mcp_servers.py
@@ -118,7 +118,7 @@ def register_builtin_mcp_servers(
     if not skill_denied:
         try:
             from backend.apps.skills.skills import sync_skills
-            has_loadable_skill = any(not s.built_in for s in sync_skills())
+            has_loadable_skill = any(not s.built_in and s.enabled for s in sync_skills())
         except Exception:
             has_loadable_skill = False
         if has_loadable_skill:
diff --git a/backend/apps/skills/models.py b/backend/apps/skills/models.py
index 4b7bf08a..0770b0cb 100644
--- a/backend/apps/skills/models.py
+++ b/backend/apps/skills/models.py
@@ -19,6 +19,8 @@ class Skill(BaseModel):
     source: str = ""
     folder: str = ""
     version: str = ""
+    # The detail-page toggle: a disabled skill stays installed but leaves the agent's skill list, the Skill tool refuses to load it, and cloud runs skip it.
+    enabled: bool = True
 
 
 class SkillCreate(BaseModel):
@@ -33,6 +35,7 @@ class SkillUpdate(BaseModel):
     description: Optional[str] = None
     content: Optional[str] = None
     command: Optional[str] = None
+    enabled: Optional[bool] = None
 
 
 class SkillLoadRequest(BaseModel):
diff --git a/backend/apps/skills/skills.py b/backend/apps/skills/skills.py
index 1e629604..42ef4532 100644
--- a/backend/apps/skills/skills.py
+++ b/backend/apps/skills/skills.py
@@ -247,6 +247,7 @@ def p_build_skill(skill_id: str, content: str, md_path: str, kind: str, index: d
         source=meta.get("source", ""),
         folder=meta.get("folder", ""),
         version=meta.get("version", ""),
+        enabled=bool(meta.get("enabled", True)),
     )
 
 
@@ -321,7 +322,9 @@ async def load_skill(body: SkillLoadRequest):
     skills_list = sync_skills()
     target = p_resolve_skill(body.id, skills_list)
     if target is None:
-        return {"ok": False, "error": "unknown_skill", "available": [s.id for s in skills_list]}
+        return {"ok": False, "error": "unknown_skill", "available": [s.id for s in skills_list if s.enabled]}
+    if not target.enabled:
+        return {"ok": False, "error": "skill_disabled", "available": [s.id for s in skills_list if s.enabled]}
     folder = target.dir_path if (target.dir_path and target.has_supporting_files) else None
     return {"ok": True, "text": format_skill_for_prompt(target.name, target.content, folder)}
 
@@ -477,6 +480,33 @@ def write_folder_skill(skill_id: str, files: dict[str, str], meta: dict) -> Skil
     return p_build_skill(slug, content, md_path, kind, index)
 
 
+@skills.router.get("/{skill_id}/files")
+async def list_skill_files(skill_id: str):
+    """The detail page's file picker: every text file in a folder skill, SKILL.md first."""
+    md_path, kind = skill_md_path(skill_id)
+    if not md_path:
+        raise HTTPException(status_code=404, detail="Skill not found")
+    if kind != "folder":
+        with open(md_path, encoding="utf-8") as f:
+            return {"files": [{"path": "SKILL.md", "content": f.read()}]}
+    base_abs = os.path.abspath(os.path.join(SKILLS_DIR, skill_id))
+    out: list[dict] = []
+    for root, dirs, names in os.walk(base_abs):
+        dirs[:] = [d for d in dirs if not d.startswith(".")]
+        for n in sorted(names):
+            path = os.path.join(root, n)
+            rel = os.path.relpath(path, base_abs)
+            if n.startswith(".") or os.path.getsize(path) > 512_000:
+                continue
+            try:
+                with open(path, encoding="utf-8") as f:
+                    out.append({"path": rel, "content": f.read()})
+            except (UnicodeDecodeError, OSError):
+                continue
+    out.sort(key=lambda e: (e["path"] != "SKILL.md", e["path"]))
+    return {"files": out}
+
+
 @skills.router.post("/upload")
 async def upload_skill(body: SkillUpload):
     """The Directory's Upload skill drop zone: a bare SKILL .md, or a .zip/.skill archive
@@ -555,6 +585,8 @@ async def update_skill(skill_id: str, body: SkillUpdate):
         meta["description"] = body.description
     if body.command is not None:
         meta["command"] = body.command
+    if body.enabled is not None:
+        meta["enabled"] = body.enabled
     index[skill_id] = meta
     save_index(index)
 
diff --git a/backend/apps/workflows/cloud/portable_context.py b/backend/apps/workflows/cloud/portable_context.py
index dcf07a13..e854b66a 100644
--- a/backend/apps/workflows/cloud/portable_context.py
+++ b/backend/apps/workflows/cloud/portable_context.py
@@ -113,7 +113,7 @@ def portable_skills() -> List[PortableSkill]:
     out: List[PortableSkill] = []
     budget = MAX_TOTAL_SKILL_CHARS
     for skill in sync_skills():
-        if skill.built_in or len(out) >= MAX_SKILLS:
+        if skill.built_in or not skill.enabled or len(out) >= MAX_SKILLS:
             continue
         # The id becomes a directory name in the container, so it has to survive being one.
         slug = safe_slug(skill.id)
diff --git a/backend/tests/test_skill_enable_and_files.py b/backend/tests/test_skill_enable_and_files.py
new file mode 100644
index 00000000..b2b153d2
--- /dev/null
+++ b/backend/tests/test_skill_enable_and_files.py
@@ -0,0 +1,63 @@
+"""The detail-page chrome's backend: the enable toggle must actually gate the agent-facing
+surfaces (Skill tool load + sync list), and the file picker endpoint lists a folder skill's
+text files with SKILL.md first."""
+
+from __future__ import annotations
+
+import pytest
+from fastapi import HTTPException
+
+import backend.apps.skills.skills as skills_mod
+from backend.apps.skills.models import SkillUpdate
+
+
+@pytest.fixture
+def isolated_skills(tmp_path, monkeypatch):
+    d = tmp_path / "skills"
+    d.mkdir()
+    monkeypatch.setattr(skills_mod, "SKILLS_DIR", str(d))
+    monkeypatch.setattr(skills_mod, "INDEX_PATH", str(d / ".skills_index.json"))
+    return d
+
+
+def seed(name: str, extra: dict[str, str] | None = None) -> str:
+    files = {"SKILL.md": f"---\nname: {name}\ndescription: d\n---\nbody"}
+    files.update(extra or {})
+    skill = skills_mod.write_folder_skill(skills_mod.safe_slug(name), files, {"name": name, "description": "d"})
+    return skill.id
+
+
+@pytest.mark.asyncio
+async def test_disable_gates_load_and_listing(isolated_skills):
+    sid = seed("Togglable")
+    assert all(s.enabled for s in skills_mod.sync_skills())
+
+    await skills_mod.update_skill(sid, SkillUpdate(enabled=False))
+    target = next(s for s in skills_mod.sync_skills() if s.id == sid)
+    assert target.enabled is False
+
+    res = await skills_mod.load_skill(skills_mod.SkillLoadRequest(id=sid))
+    assert res["ok"] is False
+    assert res["error"] == "skill_disabled"
+    assert sid not in res["available"]
+
+    await skills_mod.update_skill(sid, SkillUpdate(enabled=True))
+    res = await skills_mod.load_skill(skills_mod.SkillLoadRequest(id=sid))
+    assert res["ok"] is True
+
+
+@pytest.mark.asyncio
+async def test_files_endpoint_lists_skill_md_first(isolated_skills):
+    sid = seed("Multi", {"scripts/run.py": "print('hi')", "notes.txt": "n"})
+    res = await skills_mod.list_skill_files(sid)
+    paths = [f["path"] for f in res["files"]]
+    assert paths[0] == "SKILL.md"
+    assert "scripts/run.py" in paths
+    assert "notes.txt" in paths
+
+
+@pytest.mark.asyncio
+async def test_files_endpoint_404_for_unknown(isolated_skills):
+    with pytest.raises(HTTPException) as e:
+        await skills_mod.list_skill_files("nope")
+    assert e.value.status_code == 404