# Callendar

> Use this tool when you need to automate WhatsApp reminders and rescheduling for Calendly events, solving problems of missed appointments and inefficient scheduling. It integrates with Calendly via a public read-only MCP endpoint, accepting event data as input and sending reminders and updates as output. Ideal for businesses and individuals relying on Calendly for scheduling and wanting to enhance client engagement through WhatsApp notifications.

Canonical page: https://skillsregistry.net/skills/co-callendar-mcp  
JSON: https://api.skillsregistry.net/v1/skills/co-callendar-mcp

## Description

WhatsApp® reminders and rescheduling for Calendly. Public read-only MCP endpoint.

## Trust

- **Trust score (0–1):** 0.70
- **Verification tier:** unverified

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** communication
- **Updated:** 2026-05-08

## Source

- **Source listing:** [MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/co.callendar%2Fmcp)

## Use it

MCP endpoint published by the skill: `https://app.callendar.de/mcp`

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "co-callendar-mcp"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/co-callendar-mcp` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/co-callendar-mcp/pull`

---
SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt