Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@reminder-mcp Remind me to water the plants in 2 hours."
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
A MCP server for scheduling and triggering reminders via Slack or Telegram.
Reminders are delivered even if your server is not running.
This is possible because reminders are scheduled and triggered by an external service (cron-job.org), which will send the notification to Slack or Telegram at the scheduled time, regardless of your server's status.
{
"mcpServers": {
"reminder": {
"command": "npx",
"args": ["-y", "reminder-mcp"],
"env": {
"CRON_JOB_API_KEY": "your_api_key",
"NOTIFICATION_PLATFORM": "slack",
"SLACK_WEBHOOK_URL": "https://hooks.slack.com/services/xxxxxxx",
"TELEGRAM_BOT_TOKEN": "",
"TELEGRAM_CHAT_ID": ""
}
}
}
}Related MCP server: TaskUp MCP Server
Name | Description |
| API key from cron-job.org |
|
|
| (Slack only) Webhook URL for your channel |
| (Telegram only) Bot token from @BotFather |
| (Telegram only) Chat ID for your group/user |
You can use natural language instructions with an LLM. Here are some examples:
Remind me to call Alice in 5 minutes.
Remind me to make a doctor appointment at 3:00 PM tomorrow.
List all my reminders.
Delete the reminder titled "Call Alice".
Note: Reminders are required to be set at least 2 minutes ahead of time.
Register at cron-job.org and generate an API key.
Go to Slack Apps.
Create or select an app.
Add the 'Incoming Webhooks' feature.
Activate and create a webhook URL for your channel.
Set SLACK_WEBHOOK_URL in the configuration env.
Create a bot with @BotFather.
Add your bot to your group or message it directly.
Get your chat ID via the Telegram API: https://api.telegram.org/bot<YOUR_BOT_TOKEN>/getUpdates.
Set TELEGRAM_BOT_TOKEN and TELEGRAM_CHAT_ID in the configuration env.
Create a reminder You MUST call this function before 'get-current-time' to obtain the current time.
Inputs: title (required), datetime (required).
Delete reminders by title, processed, or all
Inputs: deletionType (required), title.
Get the current local time
Inputs: no named parameters.
Get all reminders
Inputs: no named parameters.
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
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Scored across 4 tools
Each tool serves a distinct purpose: create, delete, get reminders, and get current time. There is no overlap or ambiguity between them.
All tool names follow a consistent verb-noun pattern in kebab-case (e.g., create-reminder, delete-reminder, get-reminders, get-current-time).
With 4 tools, the server is well-scoped for its purpose. Each tool serves a necessary function without unnecessary bloat.
The server covers create, read (all reminders), and delete, but lacks update functionality and retrieval of a single reminder by ID, which are common operations.
Schedule tasks for later from your AI agent: reminders, delayed webhooks, recurring jobs.
Schedule real phone-call reminders with WhatsApp follow-up — medication, wake-ups, family check-ins.
Context-aware reminders that surface when your situation matches, not at a fixed time.
Reminders your agent creates: email, WhatsApp, SMS or call, in steps you set. Stops on acknowledge.