# add_segment_sfx

Attach a sound effect from the audio library to a segment (find track ids via browse_audio_library with category="sfx"). Re-run build_scenes to get it onto the timeline.

Agent View of the PolicyLayer registry record for `add_segment_sfx`. HTML page: https://policylayer.com/tools/com-framesail-framesail/add-segment-sfx

## Facts

- Tool: `add_segment_sfx`
- Server: Framesail (`https://api.framesail.com/mcp`) — https://policylayer.com/tools/com-framesail-framesail.md
- Homepage: https://github.com/https://api.framesail.com/mcp
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 3 (3 required)
- Recommended policy verdict: Rate-limited

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `project_id` | string | yes | Project ID, as returned by create_project or list_projects |
| `segment_number` | integer | yes | 1-based segment number, as reported by get_segments |
| `library_track_id` | string | yes | Audio library track ID, from browse_audio_library(category="sfx") |

Parameters from the server's own tool schema.

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

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "add_segment_sfx",
    "arguments": {
      "project_id": "<project_id>",
      "segment_number": 0,
      "library_track_id": "<library_track_id>"
    }
  }
}
```

## Why add_segment_sfx is rated Medium

This tool creates or modifies video project data by attaching sound effects to segments. While it modifies the video composition, the changes are reversible (effects can be removed/changed and rebuild_scenes reapplied). It does not execute arbitrary code, delete data irreversibly, or move money.

From the tool's own definition: "Tool 'adds' (modifies) sound effects to segments and requires re-running build_scenes to apply changes. Description explicitly states 'Attach a sound effect from the audio library to a segment', indicating creation/modification of video composition data."

## Use case

AI agents use add_segment_sfx to create or update resources in Framesail, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Framesail environment.

## Recommended policy (PolicyLayer)

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

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "add_segment_sfx": {
      "limits": [
        {
          "counter": "add_segment_sfx_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Framesail (67)

- `delete_asset` — Destructive — https://policylayer.com/tools/com-framesail-framesail/delete-asset.md
- `delete_project` — Destructive — https://policylayer.com/tools/com-framesail-framesail/delete-project.md
- `delete_style` — Destructive — https://policylayer.com/tools/com-framesail-framesail/delete-style.md
- `director_note` — Destructive — https://policylayer.com/tools/com-framesail-framesail/director-note.md
- `remove_music_track` — Destructive — https://policylayer.com/tools/com-framesail-framesail/remove-music-track.md
- `scan_script` — Destructive — https://policylayer.com/tools/com-framesail-framesail/scan-script.md
- `analyze_style` — Execute — https://policylayer.com/tools/com-framesail-framesail/analyze-style.md
- `build_scenes` — Execute — https://policylayer.com/tools/com-framesail-framesail/build-scenes.md
- `export_video` — Execute — https://policylayer.com/tools/com-framesail-framesail/export-video.md
- `regenerate_segment_asset` — Execute — https://policylayer.com/tools/com-framesail-framesail/regenerate-segment-asset.md
- `await_jobs` — Read — https://policylayer.com/tools/com-framesail-framesail/await-jobs.md
- `browse_audio_library` — Read — https://policylayer.com/tools/com-framesail-framesail/browse-audio-library.md
- `get_credit_balance` — Read — https://policylayer.com/tools/com-framesail-framesail/get-credit-balance.md
- `get_pipeline_progress` — Read — https://policylayer.com/tools/com-framesail-framesail/get-pipeline-progress.md
- `get_project` — Read — https://policylayer.com/tools/com-framesail-framesail/get-project.md
- `get_script` — Read — https://policylayer.com/tools/com-framesail-framesail/get-script.md
- `get_section_template` — Read — https://policylayer.com/tools/com-framesail-framesail/get-section-template.md
- `get_segment_assets` — Read — https://policylayer.com/tools/com-framesail-framesail/get-segment-assets.md
- `get_segments` — Read — https://policylayer.com/tools/com-framesail-framesail/get-segments.md
- `get_style` — Read — https://policylayer.com/tools/com-framesail-framesail/get-style.md
- `get_video_url` — Read — https://policylayer.com/tools/com-framesail-framesail/get-video-url.md
- `get_workflow_status` — Read — https://policylayer.com/tools/com-framesail-framesail/get-workflow-status.md
- `list_assets` — Read — https://policylayer.com/tools/com-framesail-framesail/list-assets.md
- `list_channels` — Read — https://policylayer.com/tools/com-framesail-framesail/list-channels.md
- `list_models` — Read — https://policylayer.com/tools/com-framesail-framesail/list-models.md
- `list_music_tracks` — Read — https://policylayer.com/tools/com-framesail-framesail/list-music-tracks.md
- `list_projects` — Read — https://policylayer.com/tools/com-framesail-framesail/list-projects.md
- `list_provider_keys` — Read — https://policylayer.com/tools/com-framesail-framesail/list-provider-keys.md
- `list_scenes` — Read — https://policylayer.com/tools/com-framesail-framesail/list-scenes.md
- `list_style_presets` — Read — https://policylayer.com/tools/com-framesail-framesail/list-style-presets.md
- …and 37 more: https://policylayer.com/tools/com-framesail-framesail.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=com-framesail-framesail · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/com-framesail-framesail