grok-glance/skills/glance/SKILL.md

name, description

name	description
glance	Set up, inspect, or control grok-glance — the passkey-guarded phone dashboard for this Grok Build session. Use when the user asks to watch a session from their phone, enrol a device, expose the dashboard over Tailscale, or turn remote approve/deny on or off.

grok-glance

A local daemon plus web dashboard that shows what Grok Build is doing, readable from a phone behind a WebAuthn passkey. It can also pause risky tool calls until someone taps approve.

The daemon is started automatically by the SessionStart hook. Everything below is done through the glance CLI at $GROK_PLUGIN_ROOT/bin/glance.

First check whether it is even built

The plugin ships as TypeScript and must be built once:

cd "$GROK_PLUGIN_ROOT" && npm install && npm run build

glance status prints a "not built" error with this same instruction if it is missing. Do not attempt to skip the build — the daemon entry point is dist/server/index.js.

The commands

glance status                      # is it running, which origin, how many devices
glance up                          # start the daemon in the background
glance stop                        # stop it
glance logs                        # last 60 lines of the daemon log
glance enroll                      # mint a one-time code + URL for a new phone
glance set-origin <https-url>      # set the public origin and WebAuthn RP ID
glance devices                     # list enrolled devices
glance revoke <id-prefix>          # revoke one
glance approval <off|risky|all>    # remote approve/deny policy
glance sync-hooks                  # regenerate hooks/hooks.json from hooks/hooks.template.json

Getting it onto a phone

The dashboard listens on 127.0.0.1 only. Passkeys need a real hostname with valid TLS — a bare IP can never be a WebAuthn RP ID — so the supported path is Tailscale Serve:

tailscale serve --bg 127.0.0.1:8791
tailscale serve status                      # read the https://<box>.<tailnet>.ts.net URL
glance set-origin https://<box>.<tailnet>.ts.net
glance enroll

Then open the printed URL on the phone, type the code, and create the passkey. The phone must be on the same tailnet.

Changing the origin changes the RP ID, which invalidates existing passkeys. Say so before running set-origin on a working setup.

Remote approve/deny

glance approval risky makes Bash, Write, Edit, MultiEdit and NotebookEdit calls pause and wait for a tap on the phone. Defaults that matter:

• Nothing waits unless a phone is actually watching the dashboard (requireWatcher).
• If nobody answers within 90s the call is allowed, not denied. Flip that on the phone's settings panel if you want the opposite.
• Every failure path is fail-open: daemon down, timeout, bad JSON, a rejected hook secret — the tool call proceeds. This is a convenience gate, not a security boundary.

glance approval off (the default) means Grok Build never blocks on the phone.

When something does not work

• "not running" → glance up, then glance logs.
• Passkey prompt fails with a security error → the phone is on a hostname the RP ID does not cover. Compare glance status's rp id with the hostname in the phone's address bar.
• Dashboard loads but shows nothing → hooks are not firing. glance status warns if the hook secret in $GLANCE_HOME/hook.secret no longer matches the one the daemon loaded (events are being dropped with a 403); glance stop && glance up fixes that. Otherwise check that hooks/hooks.json exists and is registered — it is generated, so glance sync-hooks rebuilds it from the template.
• Page says "run npm install && npm run build" → the web bundle is missing; build it.

What it deliberately does not do

Read-only plus approve/deny. It cannot send prompts, edit files, run tools, or resume a session. Do not tell the user otherwise.