WebEx Voice Interface

How It Works

User sends voice clip in WebEx space
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OpenClaw transcribes automatically (built-in)
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NetClaw processes with full skill set
(pyATS, NetBox, ServiceNow, all 43 MCP servers)
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python3 $MCP_CALL "python3 -u $TTS_MCP_SCRIPT" text_to_speech -> MP3 file
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Upload MP3 to WebEx 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:

bash
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:

bash
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 WebEx space/thread AND upload the MP3 file as an attachment via the Messages API (multipart/form-data with files parameter):

> 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 | | WebEx 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

WebEx File Upload for Voice

WebEx Messages API supports file attachments via multipart upload:

POST https://webexapis.com/v1/messages
Content-Type: multipart/form-data

- roomId: <space-id>
- parentId: <thread-parent-message-id> (if threading)
- text: "Voice Response: R1 has 3 OSPF neighbors..."
- files: @/tmp/netclaw-tts/response.mp3

Files up to 100 MB are supported. MP3 voice responses are typically under 1 MB.

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 WebEx