feat(plugins): google_meet \u2014 join, transcribe, speak, follow up (#16364)
* feat(plugins): google_meet — bundled plugin for join+transcribe Meet calls
v1 shipping transcribe-only. Spawns headless Chromium via Playwright,
joins an explicit https://meet.google.com/ URL, enables live captions,
and scrapes them into a transcript file the agent can read across turns.
The agent then has the meeting content in context and can do followup
work (send recap, file issues, schedule followups) with its regular tools.
Surface:
- Tools: meet_join, meet_status, meet_transcript, meet_leave, meet_say
(meet_say is a v1 stub — returns not-implemented; v2 will wire
realtime duplex audio via OpenAI Realtime / Gemini Live +
BlackHole / PulseAudio null-sink.)
- CLI: hermes meet setup | auth | join | status | transcript | stop
- Lifecycle: on_session_end auto-leaves any still-running bot.
Safety:
- URL regex rejects anything that isn't https://meet.google.com/...
- No calendar scanning, no auto-dial, no auto-consent announcement.
- Single active meeting per install; a second meet_join leaves the first.
- Platform-gated to Linux + macOS (Windows audio routing for v2 untested).
- Opt-in: standalone plugin, user must add 'google_meet' to
plugins.enabled in config.yaml.
Zero core changes. Plugin uses existing register_tool /
register_cli_command / register_hook surfaces. 21 new unit tests cover the
URL safety gate, transcript dedup + status round-trip, process-manager
refusals/start/stop paths, tool-handler JSON shape under each branch,
session-end cleanup, and platform-gated register().
* feat(plugins/google_meet): v2 realtime audio + v3 remote node host
v2 \u2014 agent speaks in-meeting
audio_bridge.py: PulseAudio null-sink (Linux) + BlackHole probe (macOS).
On Linux we load pactl module-null-sink + module-virtual-source, track
module ids for teardown; Chrome gets PULSE_SOURCE=<virt src> env so its
fake mic reads what we write to the sink. macOS just probes BlackHole
2ch and returns its device name \u2014 the plugin refuses to switch the
user's default audio input (that would surprise them).
realtime/openai_client.py: sync WebSocket client for the OpenAI Realtime
API. RealtimeSession.speak(text) sends conversation.item.create +
response.create, accumulates response.audio.delta PCM bytes, appends
them to a file. RealtimeSpeaker runs a JSONL-queue loop consuming
meet_say calls. 'websockets' is an optional dep imported lazily.
meet_bot.py: when HERMES_MEET_MODE=realtime, provisions AudioBridge,
starts RealtimeSession + speaker thread, spawns paplay to pump PCM
into the null-sink, then cleans everything up on SIGTERM. If any
realtime setup step fails, falls back cleanly to transcribe mode
with an error flagged in status.json.
process_manager.enqueue_say(): writes a JSONL line to say_queue.jsonl;
refuses when no active meeting or active meeting is transcribe-only.
tools.meet_say: real implementation; requires active mode='realtime'.
meet_join: adds mode='transcribe'|'realtime' param.
v3 \u2014 remote node host
node/protocol.py: JSON envelope (type, id, token, payload) + validate.
node/registry.py: $HERMES_HOME/workspace/meetings/nodes.json, with
resolve() auto-selecting the sole registered node when name is None.
node/server.py: NodeServer \u2014 websockets.serve, bearer-token auth,
dispatches start_bot/stop/status/transcript/say/ping onto the local
process_manager. Token auto-generated + persisted on first run.
node/client.py: NodeClient \u2014 short-lived sync WS per RPC, raises
RuntimeError on error envelopes, clean API matching the server.
node/cli.py: 'hermes meet node {run,list,approve,remove,status,ping}'
subtree; wired into the main meet CLI by cli.py so 'hermes meet node'
Just Works.
tools.py: every meet_* tool accepts node='<name>'|'auto'; when set,
routes through NodeClient to the remote bot instead of running
locally. Unknown node \u2192 clear 'no registered meet node matches ...'
error.
cli.py: 'hermes meet join --node my-mac --mode realtime' and
'hermes meet say "..." --node my-mac' route to the node; 'hermes
meet node approve <name> <url> <token>' registers one.
Tests
21 v1 tests updated (meet_say is no longer a stub; active-record now
carries mode).
20 new audio_bridge + realtime tests.
42 new node tests (protocol/registry/server/client/cli).
17 new v1/v2/v3 integration tests at the plugin level covering
enqueue_say edge cases, env var passthrough, mode validation, node
routing (known/unknown/auto/ambiguous), and argparse wiring for
`hermes meet say` + `hermes meet node` + --mode/--node flags.
Total: 100 plugin tests + 58 plugin-system tests = 158 passing.
E2E verified on Linux with fresh HERMES_HOME: plugin loads, 5 tools
register, on_session_end hook wires, 'hermes meet' CLI tree wires
including the node subtree, NodeRegistry round-trips, meet_join routes
correctly to NodeClient under node='my-mac' with mode='realtime',
enqueue_say accepts realtime/rejects transcribe, argparse parses every
new flag cleanly.
Zero changes to core. All new code lives under plugins/google_meet/.
* feat(plugins/google_meet): auto-install, admission detect, mac PCM pump, barge-in, richer status
Ready-for-live-test follow-up on PR #16364. Five additions that matter for
the first live run on a real Meet, in priority order:
1. hermes meet install [--realtime] [--yes]
pip install playwright websockets + python -m playwright install chromium
--realtime: installs platform audio deps (pulseaudio-utils on Linux via
sudo apt, blackhole-2ch + ffmpeg on macOS via brew). Prompts before
sudo/brew unless --yes. Refuses on Windows. Refuses to auto-flip the
macOS default input — user still selects BlackHole in System Settings
(deliberate; surprise audio rerouting is worse than a manual step).
2. Admission detection
_detect_admission(page): Leave-button visible OR caption region
attached OR participants list present → we're in-call.
_detect_denied(page): 'You can\'t join this video call' / 'You were
removed' / 'No one responded to your request' → bail out.
HERMES_MEET_LOBBY_TIMEOUT (default 300s) caps how long we sit in
the lobby before giving up. in_call stays False until admitted.
Status surfaces leaveReason: duration_expired | lobby_timeout |
denied | page_closed.
3. macOS PCM pump
ffmpeg reads speaker.pcm (24kHz s16le mono) and writes to the
BlackHole AVFoundation output via -f audiotoolbox
-audio_device_index <N>. _mac_audio_device_index() probes
ffmpeg -f avfoundation -list_devices true to resolve 'BlackHole 2ch'
→ numeric index. Falls back to index 0 on probe failure. Linux
paplay pump unchanged.
4. Richer status dict
_BotState now tracks realtime, realtimeReady, realtimeDevice,
audioBytesOut, lastAudioOutAt, lastBargeInAt, joinAttemptedAt,
leaveReason. RealtimeSession.audio_bytes_out / last_audio_out_at
counters fold into the status file once a second so meet_status()
can show the agent's voice activity in near-real-time.
5. Barge-in
RealtimeSession.cancel_response() sends type='response.cancel' over
the same WS (lock-guarded so it's safe to call from the caption
thread while speak() is reading frames). Handles response.cancelled
as a terminal frame type. _looks_like_human_speaker() gates triggers
so the bot's own name, 'You', 'Unknown', and blanks don't self-cancel.
Called from the caption drain loop: when a new caption arrives
attributed to a real participant while rt.session exists, we fire
cancel_response() and stamp lastBargeInAt.
Tests: 20 new unit tests across _BotState telemetry, barge-in gating,
admission/denied probe error handling, cancel_response with and without
a connected WS, and `hermes meet install` CLI wiring (flag parsing +
end-to-end subprocess.run verification + Linux-already-installed fast
path). Total 171 passing across all google_meet test files + the
plugin-system regression suite.
E2E verified on Linux: plugin loads, all 5 tools register,
`hermes meet install --realtime --yes` parses, fresh-bot status.json
has every new telemetry key, cancel_response on a disconnected session
returns False without raising, barge-in helper gates the bot's own
name correctly.
Still out of scope (for a future PR, not blocking live test):
mic → Realtime duplex (the agent listening to meeting audio via
WebRTC), node-host TLS/pairing UX, Windows audio, Meet create+Twilio.
Docs updated: SKILL.md now lists the installer subcommand, lobby
timeout, barge-in caveat, and the full status-dict reference table.
README.md quick-start uses hermes meet install.
2026-04-27 06:22:25 -07:00
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"""Remote 'node host' primitive for the google_meet plugin.
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Lets the Meet bot (Playwright + Chrome) run on a different machine than
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the hermes-agent gateway. The gateway speaks a small JSON-over-WebSocket
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RPC protocol to the remote node; the node wraps the existing
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``plugins.google_meet.process_manager`` API.
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Topology
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--------
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gateway (Linux) ── ws://mac.local:18789 ──▶ node server (Mac)
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└─ process_manager
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└─ meet_bot (Playwright)
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Why: Google sign-in + Chrome profile live on the user's laptop. Running
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the bot there reuses that profile without shipping credentials to the
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server.
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Public surface
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--------------
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NodeClient — gateway-side RPC client (short-lived sync WS per call)
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NodeServer — long-running server that hosts the bot
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NodeRegistry — local JSON registry of approved nodes (name → url+token)
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protocol — message envelope helpers (make_request, encode, decode, ...)
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"""
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from __future__ import annotations
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from plugins.google_meet.node import protocol
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from plugins.google_meet.node.client import NodeClient
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from plugins.google_meet.node.protocol import (
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VALID_REQUEST_TYPES,
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decode,
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encode,
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make_error,
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make_request,
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make_response,
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validate_request,
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)
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from plugins.google_meet.node.registry import NodeRegistry
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from plugins.google_meet.node.server import NodeServer
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__all__ = [
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"NodeClient",
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"NodeServer",
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"NodeRegistry",
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"protocol",
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"make_request",
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"make_response",
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"make_error",
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"encode",
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"decode",
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"validate_request",
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"VALID_REQUEST_TYPES",
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]
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