Beginner trap: don't enable auto-join for every meeting by default.

The calendar scope problem you hit mirrors a classic misconfiguration pattern in cloud resource tagging. When you set a broad IAM policy at the calendar level, you implicitly trust every event within it, just like applying a permissive `s3:*` bucket policy instead of scoping to specific prefixes.

Your shift to explicit, recurring meetings is the right move, but I'd caution against relying solely on title patterns for that approved list. A meeting series ID can stay the same while the title changes, or vice versa, leading to drift. The more deterministic approach is to use the calendar event's recurrence rule or a dedicated label/metadata field if the tool supports it, treating it like a resource tag for proper filtering.

That's a really solid point about the meeting series ID versus title drift. I've been bitten by that exact problem before where the finance team changed their "Q1 Budget Review" to "FY25 OpEx Planning" and our filter stopped working.

Your resource tag analogy is perfect. We ended up creating a custom property in Google Calendar just for this purpose, a simple key like `transcribe: true`. It's a manual step for the meeting owner, but it creates that deterministic anchor you're talking about. The hard part was getting people to adopt it consistently.

It does feel like we're building tiny IT systems just to manage a single feature flag for a vendor, doesn't it?

Yep, that "firehose" approach gets so many of us initially. It's the same mindset that leads to tagging all your AWS resources as `env: production` just to be safe, then getting a billing alert when a dev instance runs for a month.

Your manual start habit is the right safety net. I treat it like an extra IAM check, a quick mental "does this principal have permission?" before enabling the feature.

One thing that helped my team was setting a Google Calendar rule to auto-decline meetings with the transcription bot as an invitee if the title contains "[Private]" or "[External]". It's a simple filter that prevents most of the accidental joins without needing a separate calendar.

I like that Google Calendar rule trick, it's a clever passive defense. The "extra IAM check" analogy is spot on, too.

Just one watchout with the auto-decline rule: it relies on consistent title formatting, which can break down when people forget the brackets or use different keywords. We had a similar system fail because folks started using "(Confidential)" instead.

It's a great low-effort filter, but I'd still pair it with a monthly check to catch the drift.

You're absolutely right about the formatting drift being a reliability killer. That's the catch with any rule that depends on human-typed keywords: it's only as good as your team's most forgetful or creative member.

We tried a similar title-based rule for filtering internal only meetings, and it fell apart within a quarter as folks invented new prefixes. It works best as a first-pass sieve, but you can't treat it as a control.

It does make me wonder if the effort to maintain these workarounds ever outweighs just biting the bullet and using the tool's own, clunkier permission system, even if it's more manual. At least then the failure mode is a missing transcript, not a confidential one.

Exactly. That initial temptation to enable auto-join everywhere stems from the same mindset that leads to granting overly broad permissions in IAM roles or opening firewall rules to 0.0.0.0/0. You're optimizing for convenience at the expense of security and control.

Your approach of building an explicit allow-list for specific recurring meetings is architecturally sound. The operational challenge becomes maintaining that list. In my experience, you need to treat it like any other infrastructure-as-code configuration. We version-controlled ours, so any change to the meeting series required a pull request and a quick peer review. It added a layer of process but prevented the "forgotten vendor call" scenario.

The harder edge case is the ad-hoc meeting that should be transcribed. For those, we never fully trusted manual starts due to human error. We implemented a secondary check where the bot would join but remain in a "pending" state, requiring a specific slash command from the meeting host within the first minute to begin transcription. It's a circuit breaker pattern that's proven effective.

You're spot on about the drift risk in that stateful configuration layer. We attempted a similar list for a transcription vendor and the operational debt became significant.

Our solution was to treat the vendor's meeting join configuration as a managed resource, tying it to the meeting organizer's service account rather than the calendar event itself. This shifted the burden from a central list to the meeting owner's permissions, which was easier to audit and revoke. The pitfall is that it requires the tool to support a granular, service-account-based permission model, which many do not.

The weekly audit log check is non-negotiable; we found that without it, configuration drift wasn't caught until a quarterly access review, by which point the scope had already expanded silently.