AudioEditor Skill | Agent Skills

AudioEditor

AI-powered audio/video editing — transcription, intelligent cut detection, automated editing with crossfades, and optional cloud polish.

Customization

Before executing, check for user customizations at: ~/.claude/PAI/USER/SKILLCUSTOMIZATIONS/AudioEditor/

If this directory exists, load and apply any PREFERENCES.md, configurations, or resources found there. These override default behavior. If the directory does not exist, proceed with skill defaults.

Voice Notification

You MUST send this notification BEFORE doing anything else when this skill is invoked.

Send voice notification:

curl -s -X POST http://localhost:31337/notify \
  -H "Content-Type: application/json" \
  -d '{"message": "Running the WORKFLOWNAME workflow in the AudioEditor skill to ACTION"}' \
  > /dev/null 2>&1 &

Output text notification:

Running the **WorkflowName** workflow in the **AudioEditor** skill to ACTION...

This is not optional. Execute this curl command immediately upon skill invocation.

Workflow Routing

| Workflow | Trigger | File | |----------|---------|------| | Clean | "clean audio", "edit audio", "remove filler words", "clean podcast", "remove ums", "cut dead air", "polish audio" | Workflows/Clean.md |

Pipeline Architecture

Audio Input
    |
[Transcribe] Whisper word-level timestamps (insanely-fast-whisper on MPS)
    |
[Analyze] Claude classifies each segment:
    |   KEEP / CUT_FILLER / CUT_FALSE_START / CUT_EDIT_MARKER / CUT_STUTTER / CUT_DEAD_AIR
    |   Distinguishes rhetorical emphasis from accidental repetition
    |
[Edit] ffmpeg executes cuts:
    |   - 40ms qsin crossfades at every edit point
    |   - Room tone extraction and gap filling
    |   - Breath attenuation (50% volume, not removal)
    |
[Polish] (optional) Cleanvoice API final pass:
        - Mouth sound removal
        - Remaining filler detection
        - Loudness normalization

Output: cleaned MP3/WAV

Tools

| Tool | Command | Purpose | |------|---------|---------| | Transcribe | bun ${CLAUDE_SKILL_DIR}/Tools/Transcribe.ts <file> | Word-level transcription via Whisper | | Analyze | bun ${CLAUDE_SKILL_DIR}/Tools/Analyze.ts <transcript.json> | LLM-powered edit classification | | Edit | bun ${CLAUDE_SKILL_DIR}/Tools/Edit.ts <file> <edits.json> | Execute cuts with crossfades + room tone | | Polish | bun ${CLAUDE_SKILL_DIR}/Tools/Polish.ts <file> | Cleanvoice API cloud polish | | Pipeline | bun ${CLAUDE_SKILL_DIR}/Tools/Pipeline.ts <file> [--polish] | Full end-to-end pipeline |

API Keys Required

| Service | Env Var | Where to Get | |---------|---------|-------------| | Anthropic (for analyze step) | ANTHROPIC_API_KEY | Already set via Claude Code | | Cleanvoice (for polish step, optional) | CLEANVOICE_API_KEY | cleanvoice.ai Dashboard Settings API Key |

Examples

Example 1: Clean a podcast recording

User: "clean up the audio on this podcast file"
-> Invokes Clean workflow
-> Runs full pipeline: transcribe -> analyze -> edit
-> Outputs cleaned MP3 with filler words, stutters, and dead air removed

Example 2: Preview edits before applying

User: "show me what edits you'd make to this recording"
-> Invokes Clean workflow with --preview flag
-> Transcribes and analyzes, shows proposed edits without modifying audio
-> User reviews edit list, then runs again to apply

Example 3: Aggressive clean with cloud polish

User: "aggressively clean this audio and polish it"
-> Invokes Clean workflow with --aggressive --polish flags
-> Tighter thresholds for filler detection
-> Cleanvoice API pass for mouth sounds and normalization

Gotchas

Transcription accuracy varies with audio quality. Background noise, multiple speakers, and accents reduce accuracy.
Cut detection is heuristic-based. Always preview edits before committing — automated cuts can remove intentional pauses.
Cloud polish uploads audio to external service. Confirm the user is okay with cloud processing for sensitive content.

Execution Log

After completing any workflow, append a single JSONL entry:

echo '{"ts":"'$(date -u +%Y-%m-%dT%H:%M:%SZ)'","skill":"AudioEditor","workflow":"WORKFLOW_USED","input":"8_WORD_SUMMARY","status":"ok|error","duration_s":SECONDS}' >> ~/.claude/PAI/MEMORY/SKILLS/execution.jsonl

Replace WORKFLOW_USED with the workflow executed, 8_WORD_SUMMARY with a brief input description, and SECONDS with approximate wall-clock time. Log status: "error" if the workflow failed.

Agent Skills: AudioEditor

Install this agent skill to your local

Skill Files