Support transient and config assistants with call-out functionality

.github/workflows/ci.yml

@@ -30,6 +30,24 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-go-
 
+      - name: Install PortAudio (Ubuntu)
+        if: runner.os == 'Linux'
+        run: sudo apt-get update && sudo apt-get install -y portaudio19-dev
+
+      - name: Install PortAudio (macOS)
+        if: runner.os == 'macOS'
+        run: brew install portaudio
+
+      - name: Install PortAudio (Windows)
+        if: runner.os == 'Windows'
+        run: |
+          vcpkg install portaudio:x64-windows
+          echo "PKG_CONFIG_PATH=C:/vcpkg/installed/x64-windows/lib/pkgconfig" >> $env:GITHUB_ENV
+          echo "CGO_CFLAGS=-IC:/vcpkg/installed/x64-windows/include" >> $env:GITHUB_ENV
+          echo "CGO_LDFLAGS=-LC:/vcpkg/installed/x64-windows/lib -lportaudio" >> $env:GITHUB_ENV
+          # Add DLL directory to PATH so tests can find portaudio.dll at runtime
+          echo "C:/vcpkg/installed/x64-windows/bin" >> $env:GITHUB_PATH
+
       - name: Download dependencies
         run: go mod download
 
@@ -58,6 +76,9 @@ jobs:
         with:
           go-version: "1.24.4"
 
+      - name: Install PortAudio
+        run: sudo apt-get update && sudo apt-get install -y portaudio19-dev
+
       - name: Run golangci-lint
         uses: golangci/golangci-lint-action@v8
         with:
@@ -76,6 +97,9 @@ jobs:
         with:
           go-version: "1.24.4"
 
+      - name: Install PortAudio
+        run: sudo apt-get update && sudo apt-get install -y portaudio19-dev
+
       - name: Build
         run: make build
 

.gitignore

@@ -61,4 +61,7 @@ Thumbs.db
 npm-wrapper/bin/
 npm-wrapper/node_modules/
 npm-wrapper/*.tgz
-**/node_modules/
+**/node_modules/
+# Ignore stray binaries
+vapi-cli
+

Makefile

@@ -129,6 +129,15 @@ lint:
 	@echo "Running linters..."
 	golangci-lint run
 
+# Format Go code
+fmt:
+	@echo "Formatting Go code..."
+	@$(GOCMD) fmt ./...
+	@echo "✅ Go code formatted"
+
+# Alias
+format: fmt
+
 # Run all linters (CLI + MCP server)
 lint-all: lint lint-mcp
 
@@ -195,6 +204,7 @@ help:
 	@echo "  man-pages          Generate Unix manual pages"
 	@echo "  install            Install the CLI and manual pages to ~/.local/"
 	@echo "  test               Run CLI tests"
+	@echo "  fmt                Format Go code"
 	@echo "  lint               Run CLI linters"
 	@echo "  clean              Clean CLI build artifacts"
 	@echo ""
@@ -228,4 +238,4 @@ help:
 	@echo "  make version-set VERSION=1.2.3"
 	@echo "  make publish-mcp            # Publish MCP server to npm"
 
-.PHONY: all build build-mcp build-all test test-mcp test-all test-coverage clean clean-mcp clean-all tidy deps mcp-deps deps-all lint lint-mcp lint-all man-pages install install-mcp install-all run publish-mcp help 
+.PHONY: all build build-mcp build-all test test-mcp test-all test-coverage clean clean-mcp clean-all tidy deps mcp-deps deps-all lint lint-mcp lint-all fmt format man-pages install install-mcp install-all run publish-mcp help 

README.md

@@ -37,6 +37,18 @@ iex ((New-Object System.Net.WebClient).DownloadString('https://vapi.ai/install.p
 
 Both scripts automatically detect your platform and install the latest version.
 
+### Audio prerequisite (PortAudio)
+
+For voice features (microphone and speaker I/O), the CLI relies on the PortAudio runtime. Install it with your OS package manager:
+
+- macOS: `brew install portaudio`
+- Debian/Ubuntu: `sudo apt-get update && sudo apt-get install -y libportaudio2 portaudio19-dev`
+- Fedora/RHEL: `sudo dnf install -y portaudio portaudio-devel`
+- Arch Linux: `sudo pacman -S portaudio`
+- Windows: Install PortAudio and ensure `portaudio.dll` is on your PATH (e.g., via vcpkg: `vcpkg install portaudio`, or download the official binary and place the DLL alongside `vapi.exe`).
+
+If PortAudio is not installed, commands that use voice I/O (like `vapi call voice`) will fail at runtime.
+
 ### Docker
 
 ```bash