# libi.delete_caption_style

Delete a user-created caption style by id. Bundled curated styles cannot be deleted (returns

Agent View of the PolicyLayer registry record for `libi.delete_caption_style`. HTML page: https://policylayer.com/tools/libi/libi.delete-caption-style

## Facts

- Tool: `libi.delete_caption_style`
- Server: Libi (`Nagellabs/libi`) — https://policylayer.com/tools/libi.md
- Homepage: https://github.com/Nagellabs/libi
- Risk category: Destructive (Critical risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Hidden

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "libi.delete_caption_style",
    "arguments": {}
  }
}
```

## Why libi.delete_caption_style is rated Critical

Irreversibly removes user-created caption styles; cannot be undone or recovered.

From the tool's own definition: "Delete a user-created caption style by id."

## Use case

AI agents call libi.delete_caption_style to permanently remove resources in Libi, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

## Recommended policy (PolicyLayer)

Verdict: **Hidden**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Libi:

```json
{
  "version": "1",
  "default": "deny",
  "hide": [
    "libi.delete_caption_style"
  ]
}
```

## Other tools on Libi (214)

- `libi.analysis_remove_step` — Destructive — https://policylayer.com/tools/libi/libi.analysis-remove-step.md
- `libi.audio_remove_clip` — Destructive — https://policylayer.com/tools/libi/libi.audio-remove-clip.md
- `libi.clear_layer_effect` — Destructive — https://policylayer.com/tools/libi/libi.clear-layer-effect.md
- `libi.delete_asset_folder` — Destructive — https://policylayer.com/tools/libi/libi.delete-asset-folder.md
- `libi.delete_character` — Destructive — https://policylayer.com/tools/libi/libi.delete-character.md
- `libi.delete_clip` — Destructive — https://policylayer.com/tools/libi/libi.delete-clip.md
- `libi.delete_file` — Destructive — https://policylayer.com/tools/libi/libi.delete-file.md
- `libi.delete_folder` — Destructive — https://policylayer.com/tools/libi/libi.delete-folder.md
- `libi.delete_item` — Destructive — https://policylayer.com/tools/libi/libi.delete-item.md
- `libi.delete_keyframe` — Destructive — https://policylayer.com/tools/libi/libi.delete-keyframe.md
- `libi.delete_overlay_preset` — Destructive — https://policylayer.com/tools/libi/libi.delete-overlay-preset.md
- `libi.delete_piece` — Destructive — https://policylayer.com/tools/libi/libi.delete-piece.md
- `libi.delete_scene` — Destructive — https://policylayer.com/tools/libi/libi.delete-scene.md
- `libi.delete_track` — Destructive — https://policylayer.com/tools/libi/libi.delete-track.md
- `libi.discard_draft` — Destructive — https://policylayer.com/tools/libi/libi.discard-draft.md
- `libi.drop_proxies` — Destructive — https://policylayer.com/tools/libi/libi.drop-proxies.md
- `libi.invalidate_model_schema_cache` — Destructive — https://policylayer.com/tools/libi/libi.invalidate-model-schema-cache.md
- `libi.remove_effect` — Destructive — https://policylayer.com/tools/libi/libi.remove-effect.md
- `libi.remove_mcp_server` — Destructive — https://policylayer.com/tools/libi/libi.remove-mcp-server.md
- `libi.remove_overlay` — Destructive — https://policylayer.com/tools/libi/libi.remove-overlay.md
- `libi.remove_skill` — Destructive — https://policylayer.com/tools/libi/libi.remove-skill.md
- `libi.remove_skill_prompt` — Destructive — https://policylayer.com/tools/libi/libi.remove-skill-prompt.md
- `libi.restore_snapshot` — Destructive — https://policylayer.com/tools/libi/libi.restore-snapshot.md
- `compose_music` — Execute — https://policylayer.com/tools/libi/compose-music.md
- `isolate_audio` — Execute — https://policylayer.com/tools/libi/isolate-audio.md
- `libi.analysis_extract_audio` — Execute — https://policylayer.com/tools/libi/libi.analysis-extract-audio.md
- `libi.analysis_transcribe_audio` — Execute — https://policylayer.com/tools/libi/libi.analysis-transcribe-audio.md
- `libi.cancel_job` — Execute — https://policylayer.com/tools/libi/libi.cancel-job.md
- `libi.compute_object_track` — Execute — https://policylayer.com/tools/libi/libi.compute-object-track.md
- `libi.compute_track_segment` — Execute — https://policylayer.com/tools/libi/libi.compute-track-segment.md
- …and 184 more: https://policylayer.com/tools/libi.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=libi · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/libi