Callendar is listed as active in the registry but did not answer our last check. It exposes 4 tools.
WhatsApp® reminders and rescheduling for Calendly. Public read-only MCP endpoint.
Callendar does not always answer
Over the last week it answered 0.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 7 min ago.
claude mcp add mcp --transport http https://app.callendar.de/mcp{
"mcpServers": {
"mcp": {
"url": "https://app.callendar.de/mcp"
}
}
}[mcp_servers.mcp]
url = "https://app.callendar.de/mcp"{
"mcpServers": {
"mcp": {
"url": "https://app.callendar.de/mcp"
}
}
}{
"mcpServers": {
"mcp": {
"url": "https://app.callendar.de/mcp"
}
}
}Available tools 4
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
create_callendar_contact_link
get_callendar_features
get_callendar_overview
get_callendar_pricing
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://app.callendar.de/mcp | streamable-http | answering | 197 ms | 7 min ago |
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Callendar — questions
Answers built from our own checks of this server.