Recal.dev

Recal exposes a single set of endpoints for Google Calendar, Outlook, and other services, so the same request works no matter which calendar a user connected. Meta events go further: they let you interact across every connected calendar using one shared ID. One call. Every calendar. For teams tired of branching code per provider, this is the core draw.

You can integrate three ways depending on your stack. The REST API follows standard patterns with webhook support and clear error codes, the SDK installs with npm and ships TypeScript types with promise-based calls, and MCP turns calendar operations into tool calls an LLM can use. That last option is why agent builders show up. Pick the one that fits. All three sit on the same data model, so you aren't locked into picking one path forever.

The scheduling endpoints return free slots for a user across a date range, with options for padding between meetings, slot length, and the earliest and latest time allowed each day. That means you can ask "when is Alex free tomorrow between 9 and 5" and get back bookable windows rather than raw calendar noise. It handles the timezone math developers usually get wrong. No more off-by-one-hour bugs. Less support tickets about wrong times.

You always keep access to your users' tokens, which the team frames as a flexibility guarantee. In practice it means you can move to another provider or read the underlying calendar data yourself without asking Recal for permission. For anyone who's been burned by a closed platform, that's a real reason to look closer. No lock-in. No hostage data.

Webhooks fire in milliseconds and bulk operations handle thousands of events, according to the company. When a user changes something on their end, your system hears about it instead of polling endlessly. That saves requests. It also saves your rate limits. The infrastructure runs on edge compute through Cloudflare Workers, so requests process near the user rather than through one central region.

Organizations group users into separate workspaces, which matters for B2B products managing many customer accounts. You assign users to organizations and monitor their calendar connections from one dashboard. Simple consumer apps can skip it. Once you're handling teams, it becomes hard to avoid.

The dashboard tracks booking patterns, peak hours, and API request volumes. You can see which integrations are active and where traffic is going, which helps when you're sizing costs or spotting a broken OAuth connection in production before your users complain about a dead booking button. It's the kind of visibility that's usually bolted on late, not built in.