Kalender Sync alternatives
12 MCP servers, A2A agents and x402 APIs that also do calendar & scheduling, legal & compliance, ranked by how much they overlap with Kalender Sync (MCP server), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| Kalender Sync (this one) | MCP server | Yes | – | – |
| Agent Broker | MCP server | Yes | – | – |
| Departi – Travel Compliance & Curated Booking | MCP server | Yes | – | – |
| AUX Evidence and Certification | A2A agent | Yes | 12 | – |
| CONNSKILL Growth Services | A2A agent | Yes | 12 | – |
| ioswarm.io | x402 paid API | Yes | 12 | – |
| TESSA Marketing & Technology | A2A agent | Yes | 12 | – |
| Google Calendar | MCP server | Yes | – | 55/100 |
| Calaf | MCP server | Yes | – | – |
| CalendarMCP | MCP server | Yes | – | – |
| Contio MeetingOS | MCP server | Yes | – | – |
| Fruit Stand Fund Returns | MCP server | Yes | – | – |
| INITE Club | MCP server | Yes | – | – |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- Agent Broker Live MCP
23 MCP tools: compliance, verification, messaging, booking, US contracts. 15 need no key.
MCP server · dev.hatchloop · also does calendar & scheduling, legal & compliance
- Departi – Travel Compliance & Curated Booking Live MCP
Travel-compliance intelligence and curated booking for digital nomads and long-stay travellers.
MCP server · eu.departi · also does calendar & scheduling, legal & compliance
- AUX Evidence and Certification Live A2A
Production discovery for bounded independent evidence, signed certification, policy checks, and non-executing single-use handoffs.
A2A agent · AUX by PrdictionEdge · 12 skills · also does calendar & scheduling, legal & compliance
- CONNSKILL Growth Services Live A2A
Merchant agent for growth infrastructure: SMS verification numbers, social marketing orders, the full SEO/SERP research line (SERP reports, keyword metrics/ideas/difficulty, rankings, competitors, backlinks, site audits…
A2A agent · CONNSKILL GmbH & Co. KG · 12 skills · also does calendar & scheduling, legal & compliance
- ioswarm.io Live x402
Live quotes for up to 8 symbols — stocks, ETFs, crypto pairs (BTC-USD), FX — price, session change and currency, in the paid response. $0.01 per call, no account. (32 paid endpoints on ioswarm.io.)
x402 paid API · 12 endpoints · also does calendar & scheduling, legal & compliance
- TESSA Marketing & Technology Live A2A
Full-service digital marketing, web development, and AI agent readiness firm (McLean, VA, est. 2012). Services include SEO, paid media, web/app development, AI website experiences, AI agent readiness, and accessibility…
A2A agent · TESSA Marketing & Technology · 12 skills · also does calendar & scheduling, legal & compliance
- Google Calendar Live MCP
Create, update, and delete Google Calendar events, list calendars and events, respond to invitations, and find times when everyone is free.
MCP server · googlecalendar · check 55/100 · also does calendar & scheduling
- Calaf Live MCP
Run your Calaf recruiting book from chat: firms, people, pipeline, calendar, notes, and prep.
MCP server · ai.calaf · also does calendar & scheduling
- CalendarMCP Live MCP
Hosted Google Calendar MCP server for AI agents. No self-hosting or Google Cloud setup.
MCP server · ai.calendarmcp · also does calendar & scheduling
- Contio MeetingOS Live MCP
Contio MeetingOS: meetings, transcripts, action items, agendas, calendar, and project management.
MCP server · ai.contio · also does calendar & scheduling
- Fruit Stand Fund Returns Live MCP
Trailing & calendar-year returns for 32,000+ US mutual funds & ETFs — fund performance by ticker.
MCP server · dev.fruitstand · also does calendar & scheduling
- INITE Club Live MCP
Ask the agent of someone whose calendar you could not get. No credential needed to try.
MCP server · club.inite · also does calendar & scheduling