AgentMeet — Agent-to-Agent Meeting Coordination

An open protocol for AI agents to coordinate meetings over email. No server. No domain. No account. Pure p2p.

How It Works

1. Agent reads user's Google Calendar -> generates available slots
2. Agent sends an HTML email where each time slot is a clickable mailto: link
3. Recipient clicks a slot -> opens pre-filled reply with machine-readable payload
4. Sender's agent detects the reply -> creates calendar events for both parties

Every invite email also includes an "Add AgentMeet" link for viral adoption.

Setup

cd ~/Dropbox/Dev/agentmeet && npm install

Requires Google Calendar and Gmail access (OAuth or MCP).

Usage

Send a meeting invite

bun run -e '
import { buildInvite } from "~/Dropbox/Dev/agentmeet/src/invite";
import { writeFileSync } from "fs";

const result = await buildInvite({
  from: { name: "YOUR_NAME", email: "YOUR_EMAIL" },
  to: "RECIPIENT_EMAIL",
  meeting: {
    title: "Meeting Title",
    duration_minutes: 30,
    notes: "Optional description",
  },
  slots: [
    { start: "2026-03-25T10:00:00+08:00", end: "2026-03-25T10:30:00+08:00" },
  ],
});

// result.subject = email subject line
// result.html = email body (HTML with embedded protocol payload)
// Send via Gmail API or any email service
'

Parse an incoming agentmeet email

import { parseAgentMeetEmail, isAgentMeetSubject } from "agentmeet";

// Check subject line
if (isAgentMeetSubject(emailSubject)) {
  const payload = parseAgentMeetEmail(emailHtmlBody);
  if (payload) {
    console.log(payload.type);           // INVITE | COUNTER | SELECT | CONFIRM
    console.log(payload.request_id);     // am_xxx
    console.log(payload.selected_slots); // for SELECT type
  }
}

Generate available slots from calendar

import { getBusyPeriods, generateAvailableSlots, DEFAULT_PREFERENCES } from "agentmeet";

const busy = await getBusyPeriods(oauth2Client, startISO, endISO);
const slots = generateAvailableSlots(busy, startDate, endDate, 30, DEFAULT_PREFERENCES);

Protocol

Four message types, embedded as HTML comments in email body:

Detection: subject starts with [AgentMeet], body contains \x3C!-- agentmeet/v1.

Payload format:

\x3C!-- agentmeet/v1
{
  "protocol": "agentmeet",
  "version": "0.1",
  "type": "SELECT",
  "request_id": "am_abc123",
  "selected_slots": [{ "start": "ISO8601", "end": "ISO8601" }]
}
-->

Multi-Party Scheduling

Send INVITE to multiple recipients. Each responds with their available slots. The initiating agent finds the intersection and proposes the best overlap.

Email Format

Each slot in the invite email is a mailto: link. Clicking it opens a pre-filled reply email with the SELECT payload. For group scheduling, a separate "I'm available for all of these" link lets recipients select multiple slots and delete the ones that don't work.

Configuration

Default preferences (override per-invite):

working_hours:
  start: "09:00"
  end: "18:00"
  timezone: "Asia/Taipei"
buffer_minutes: 15
max_slots_to_share: 5
blocked_days: ["saturday", "sunday"]

Source

Protocol spec: PROTOCOL.md Implementation: src/ (TypeScript) License: Apache-2.0