slack-voice-interface

name	slack-voice-interface
description	Respond to Slack voice clips with both text and an MP3 voice reply using edge-tts. Voice IN is already handled by OpenClaw transcription. Use when a user sends a voice message in Slack, you need to reply with audio, or you want to generate a spoken MP3 response.
license	Apache-2.0
user-invocable	true
metadata	{"openclaw":{"requires":{"bins":"[Truncated]","env":"[Truncated]"}}}

Slack Voice Interface

How It Works

User sends voice clip in Slack
    |
    v
OpenClaw transcribes automatically (built-in)
    |
    v
NetClaw processes with full skill set
(pyATS, NetBox, ServiceNow, all 40 MCP servers)
    |
    v
python3 $MCP_CALL "python3 -u $TTS_MCP_SCRIPT" text_to_speech → MP3 file
    |
    v
Upload MP3 to Slack thread + post text response

Voice Response Workflow

Step 1: Process the question

Treat the transcribed voice message identically to a typed text message. Use the full NetClaw skill set — pyATS, NetBox, ServiceNow, etc.

Step 2: Generate voice response

After composing your text response, call text_to_speech:

python3 $MCP_CALL "python3 -u $TTS_MCP_SCRIPT" text_to_speech '{"text":"R1 has 3 OSPF neighbors, all in FULL state on Area 0...","voice":"en-US-GuyNeural"}'

This returns JSON with an output_path to the generated MP3 file.

To list available voices:

python3 $MCP_CALL "python3 -u $TTS_MCP_SCRIPT" list_voices '{"language":"en"}'

Step 3: Deliver both text and voice

Post the text response in the Slack thread AND upload the MP3 file:

:loud_speaker: Voice Response [MP3 audio file attached]

R1 has 3 OSPF neighbors, all in FULL state on Area 0:

• 2.2.2.2 (R2) via Gi1 — FULL/DR
• 3.3.3.3 (R3) via Gi2 — FULL/BDR

Always deliver text AND voice. Text is primary (searchable, accessible). Voice is supplementary.

Voice Selection

Voice	Description
en-US-GuyNeural	Professional male — default
en-US-JennyNeural	Professional female
en-US-AriaNeural	Conversational female
en-GB-RyanNeural	British male

Users can request a voice change:

• "Switch to a female voice" → use en-US-JennyNeural
• "Use a British accent" → use en-GB-RyanNeural

Call list_voices to see all 300+ available voices.

Performance

Phase	Latency
edge-tts synthesis	1-2 seconds
Slack MP3 upload	< 1 second

Voice synthesis adds minimal overhead to the response time.

Fallback

If TTS fails, deliver the text response immediately. Do not block on voice.

Tips for Voice Responses

• Keep it concise — under 100 words works best for spoken delivery
• Avoid tables — describe data conversationally for voice
• Spell out abbreviations — say "OSPF" not "O-S-P-F" (edge-tts handles this)
• Use natural phrasing — the text will be read aloud, so write for the ear

GAIT Integration

Record voice interactions in the GAIT audit trail:

Input: Voice clip from @user (transcript: "What are your interfaces?")
Action: Queried R1 interfaces via pyATS
Output: 4 interfaces found — text + voice response delivered to Slack