WebChat Voice Full Stack

One-step full-stack installer for OpenClaw WebChat voice input with local speech-to-text. Orchestrates three focused skills in order: local STT backend (fast...

Meta-installer that orchestrates three standalone skills in the correct order:

1. faster-whisper-local-service — local STT backend (HTTP on 127.0.0.1:18790)
2. webchat-https-proxy — HTTPS/WSS reverse proxy for Control UI + WebSocket + transcription
3. webchat-voice-gui — mic button, VU meter, keyboard shortcuts, i18n for WebChat

Prerequisites

All three skills must be installed before running this meta-installer:

npx clawhub install faster-whisper-local-service
npx clawhub install webchat-https-proxy
npx clawhub install webchat-voice-gui

Additionally required on the system:

• Python 3.10+
• gst-launch-1.0 (GStreamer, from OS packages)
• Internet access on first run (model download ~1.5 GB for medium)

Deploy

bash scripts/deploy.sh

Optional overrides (passed through to downstream scripts):

VOICE_HOST=10.0.0.42 VOICE_HTTPS_PORT=8443 TRANSCRIBE_PORT=18790 WHISPER_LANGUAGE=auto bash scripts/deploy.sh

What this does (via downstream scripts)

This skill does not contain deployment logic itself. It calls deploy.sh from each sub-skill:

Step 1: faster-whisper-local-service

• Creates Python venv, installs faster-whisper==1.1.1
• Writes transcribe-server.py with input validation (magic-byte check, size limit)
• Creates systemd user service openclaw-transcribe.service
• Downloads model weights on first run (~1.5 GB for medium)

Step 2: webchat-https-proxy

• Copies https-server.py to workspace
• Adds HTTPS origin to gateway.controlUi.allowedOrigins
• Creates systemd user service openclaw-voice-https.service
• Auto-generates self-signed TLS cert (TLS 1.2+ enforced)

Step 3: webchat-voice-gui

• Copies voice-input.js and injects <script> tag into Control UI
• Installs gateway startup hook for update safety
• Optional interactive language selection

For full details, security notes, and uninstall instructions, see each skill's SKILL.md.

Security posture (why these changes are expected)

This is a meta-installer, so it coordinates downstream skills and applies only the minimum required local changes:

• Persistence: creates user-level systemd services so STT/proxy survive reboot (openclaw-transcribe, openclaw-voice-https)
• UI enablement: injects one explicit <script> tag for voice-input.js in Control UI
• Gateway compatibility: appends one HTTPS origin to gateway.controlUi.allowedOrigins

Safety characteristics:

• all changes are documented and reversible via uninstall scripts
• no root/sudo required (user scope only)
• no hidden background tasks beyond documented services
• no outbound telemetry or data exfiltration behavior

Integrity verification

Before executing any sub-skill script, deploy.sh verifies SHA256 checksums of all sub-skill scripts against scripts/checksums.sha256. If any script was modified after installation (e.g. by a registry update or tampering), deployment aborts with a clear error.

Workflow:

1. npx clawhub install <sub-skill> — fetch from registry
2. Audit the scripts manually or via code review
3. bash scripts/rehash.sh — record trusted checksums
4. bash scripts/deploy.sh — verify checksums, then deploy

Dry-run verification (no deployment):

VERIFY_ONLY=true bash scripts/deploy.sh

After a sub-skill update:

1. Review the changed scripts
2. bash scripts/rehash.sh to update the trusted baseline
3. Commit the updated checksums.sha256

Verify

bash scripts/status.sh

Uninstall

Uninstall each skill separately (in reverse order):

# 1. Voice GUI (hook, UI injection, workspace files)
bash skills/webchat-voice-gui/scripts/uninstall.sh

# 2. HTTPS Proxy (service, gateway config, certs)
bash skills/webchat-https-proxy/scripts/uninstall.sh

# 3. STT Backend (service, venv)
systemctl --user stop openclaw-transcribe.service
systemctl --user disable openclaw-transcribe.service
rm -f ~/.config/systemd/user/openclaw-transcribe.service
systemctl --user daemon-reload

Notes

• This meta-skill is a convenience wrapper. All actual logic lives in the three sub-skills.
• Review each sub-skill's scripts and security notes before running.
• The WORKSPACE and SKILLS_DIR paths are configurable via environment variables.