Voice Join — Join a Call as a Codebase AI Assistant [Pro]

Join a conference call via SIP dial-in. The assistant dials the conference number, joins as its own participant ("Claude - Codebase Assistant"), and answers codebase questions from anyone on the call.

Requires LiveKit + Twilio configuration. Run /voice-config first.

Arguments

• •$1 — The dial-in phone number (e.g., +15551234567)
• •$2 — The meeting PIN/access code (optional, e.g., 12345#)

If no arguments are provided, ask the user for the dial-in number.

Steps

1. •

   Check configuration: Call mcp__codebase-voice__get_config to verify Deepgram AND telephony keys (LiveKit + Twilio) are set. If telephony is not configured, tell the user this is a Pro feature, suggest /voice-start as the free alternative, and stop.

2. •

   Index the codebase: Quickly scan the current project:

   • •Use Glob with **/*.{py,js,ts,go,rs,java,rb,cpp,c,h} to get source files (limit to first 50)
   • •Use Read to read: README.md, CLAUDE.md, package.json or pyproject.toml
   • •Build a 2-3 sentence codebase summary
3. •

   Join the call: Call mcp__codebase-voice__start_call_session with the project path, codebase summary, dial-in number, and optional PIN.

4. •

   Tell the user the assistant has joined the call.

5. •

   Enter the question-answer loop: Same as /voice-start:

   code

   LOOP:
     a. Call mcp__codebase-voice__poll_question (timeout_ms: 2000)
     b. If result is "__NO_QUESTION__" → go to step a
     c. If result is "__LEAVE__" → call stop_session and exit
     d. If result is "__SESSION_ENDED__" → exit
     e. Otherwise, it's a codebase question:
        - Use Grep and Read to find relevant code
        - Formulate a concise answer (1-3 sentences, conversational)
        - Call mcp__codebase-voice__provide_answer with the answer
        - Go to step a
   

6. •

   On exit: Call mcp__codebase-voice__stop_session and tell the user the session ended.