AgentDraft: Inbox + calendar for AI agents, without the collisions

Hey Product Hunt 👋 I'm Yoni, the maker of AgentDraft. This started with two of my own agents. One read an email and booked a discovery call at 09:00. Another replied to a different thread and slotted a client meeting that overlapped it. Each agent did its job perfectly. Nobody held the rules they were both supposed to follow so I became the resolver, untangling my own calendar every morning. The market's answer to that has been more agents, not coordination. So I built the missing layer. AgentDraft is an ops API that gives every AI agent an inbox and a calendar through one service. Agents ask it what's open, commit bookings, reply to mail, and read structured inbound events and every booking commits through a single conditional write, so when two agents race for 4pm there's one deterministic winner by priority. No locks, no retries, no corrupted calendar. Holds expire, higher-priority agents can bump within a window, committed bookings freeze, and every hold/commit/eviction is written to a tamper-evident audit log. I didn't want to just claim it's race-free, so the proof is open: 500 concurrent booking attempts → 0 double-bookings, 100% resolution accuracy, p99 commit 112ms. The harness is public re-run it yourself: agentdraft.io/benchmark What ships today: Google Calendar, Cal.com, Zapier, per-agent SES mailboxes (DKIM-signed in + out), signed webhooks, Python + TS SDKs with a typed Conflict exception, and an MCP server. Free Developer tier, instant API key, no card. I'm opening 50 founding seats a full year of Team, free for people actually building multi-agent systems. I'd genuinely love your feedback: what collides in your stack the calendar, the inbox, or both? Thanks for taking a look 🙏