Initial commit: OpenClaw Skill Collection

6 custom skills (assign-task, dispatch-webhook, daily-briefing,
task-capture, qmd-brain, tts-voice) with technical documentation.
Compatible with Claude Code, OpenClaw, Codex CLI, and OpenCode.

openclaw-knowhow-skill/docs/infrastructure/plugins/voice-call.md

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+# Voice Call Plugin Documentation
+
+## Overview
+
+The Voice Call plugin enables OpenClaw to make outbound notifications and support multi-turn conversations with inbound call policies. It currently supports four providers: Twilio, Telnyx, Plivo, and a mock provider for development.
+
+## Installation
+
+Users can install via npm with `openclaw plugins install @openclaw/voice-call` or from a local folder for development purposes. The Gateway must be restarted after installation to load the plugin.
+
+## Key Configuration Areas
+
+**Provider Setup**: The plugin requires selecting a provider and configuring provider-specific credentials (account SID for Twilio, auth ID for Plivo, etc.).
+
+**Webhook Configuration**: Twilio/Telnyx require a publicly reachable webhook URL. The plugin serves webhooks on a configurable port and path, with security options for handling proxies and tunnels.
+
+**TTS Integration**: The plugin uses the core `messages.tts` configuration, with the ability to override it specifically for voice calls. Edge TTS is excluded from telephony due to audio format requirements.
+
+## Inbound Calls
+
+Inbound functionality is disabled by default but can be enabled through an allowlist policy with optional greeting and response tuning parameters.
+
+## Access Methods
+
+The plugin is accessible via:
+- CLI commands (`openclaw voicecall call`, `continue`, `speak`, etc.)
+- Agent tool named `voice_call`
+- Gateway RPC endpoints