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Sets up notification channels for CloudWatch alarms using SNS topics and subscriptions. Always use this skill when configuring alarm notifications — it creates encrypted SNS topics, configures topic policies for CloudWatch access, sets up email/SMS/webhook subscriptions, and

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agent-toolkit-for-aws
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$ npx -y skills add aws/agent-toolkit-for-aws --skill setting-up-cloudwatch-alarm-notifications --agent claude-code

SKILL.md

setting-up-cloudwatch-alarm-notifications.SKILL.md
name: setting-up-cloudwatch-alarm-notifications
description: Sets up notification channels for CloudWatch alarms using SNS topics and subscriptions. Always use this skill when configuring alarm notifications — it creates encrypted SNS topics, configures topic policies for CloudWatch access, sets up email/SMS/webhook subscriptions, and links alarms to notification actions with proper security controls.
version: 1

Setting Up CloudWatch Alarm Notifications

Overview

Domain expertise for configuring Amazon CloudWatch alarm notification channels using Amazon SNS topics and subscriptions. Covers creating encrypted SNS topics, setting up subscriptions for email, SMS, and webhook endpoints, configuring topic policies for CloudWatch access, and linking alarms to notification actions.

Set up alarm notifications

To configure notification channels for a CloudWatch alarm, follow the procedure exactly. See [CloudWatch alarm notification setup procedure](references/setup-cloudwatch-alarm-notifications.md).

Troubleshooting

Email notifications not received

Verify the email subscription was confirmed. Use `aws sns list-subscriptions-by-topic` to check that the subscription status is "Confirmed" rather than "PendingConfirmation".

SMS notifications failing

Ensure the phone number is in E.164 format (e.g., +12345678901) and that SMS is supported in your AWS region.

Alarm not triggering notifications

Verify the alarm has the correct SNS topic ARN in its AlarmActions using `aws cloudwatch describe-alarms`, and ensure ActionsEnabled is set to true.

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Questions about setting-up-cloudwatch-alarm-notifications.

Which coding agents can use setting-up-cloudwatch-alarm-notifications?
setting-up-cloudwatch-alarm-notifications installs in Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot, OpenCode and Windsurf with the skills CLI, using each agent's flag shown on this page. Flowy's auto-invocation, which fires a skill when your prompt matches, runs in Claude Code only.