claude-code-notify-plugin

Overview

Bash hooks that POST to a webhook URL whenever Claude needs you:

• Notification — permission prompts and MCP elicitation dialogs (matcher: permission_prompt|elicitation_dialog).
• PreToolUse:ExitPlanMode — when Claude exits plan mode and waits for plan approval.
• PreToolUse:AskUserQuestion — when Claude opens an AskUserQuestion picker and waits for your selection.
• Stop — when Claude finishes a turn.

Install

In Claude Code.

1. Add the marketplace

/plugin marketplace add Mocha--/claude-code-notify-plugin

2. Install the plugin

/plugin install claude-code-notify-plugin@mocha-plugins

Configure

Three environment variables are required:

| Variable | Required | Description | |---|---|---| | CLAUDE_NOTIFY_WEBHOOK_URL | yes | Webhook URL. | | CLAUDE_NOTIFY_NOTIFICATION_PAYLOAD | yes | JSON body for Notification, PreToolUse:ExitPlanMode, and PreToolUse:AskUserQuestion. POSTed verbatim. | | CLAUDE_NOTIFY_STOP_PAYLOAD | yes | JSON body for Stop. POSTed verbatim. |

If any of these variables is missing, the hook exits non-zero and prints an error to stderr. Disable the plugin with /plugin disable if you want to silence it temporarily.

Pick one of:

Option A — guided setup via skill

After installing the plugin, ask Claude:

configure notify plugin

This invokes the bundled configure skill, which inspects your existing config (shell rc files + ~/.claude/settings.json), asks where to write the vars, generates payloads for Slack / Discord / ntfy / custom shapes, and writes them for you.

Option B — set them manually

Export them in ~/.zshrc, ~/.bashrc, or add them under env in ~/.claude/settings.json. See Payload examples below.

After either option, restart Claude Code so the hook subprocess inherits the new env.

Payload examples

The payload shape is entirely up to you — whatever JSON your webhook accepts. The plugin POSTs the value as application/json exactly as set, with no templating or substitution. The examples below are just starting points for common destinations:

export CLAUDE_NOTIFY_WEBHOOK_URL="https://hooks.slack.com/triggers/..."

# Slack workflow trigger
export CLAUDE_NOTIFY_NOTIFICATION_PAYLOAD='{"origin":"🌰 Devbox","message":"🚨 Waiting for input"}'
export CLAUDE_NOTIFY_STOP_PAYLOAD='{"origin":"🌰 Devbox","message":"✅ Complete"}'

# Discord
export CLAUDE_NOTIFY_NOTIFICATION_PAYLOAD='{"content":"🚨 Claude needs you"}'
export CLAUDE_NOTIFY_STOP_PAYLOAD='{"content":"✅ Claude finished"}'

# ntfy
export CLAUDE_NOTIFY_NOTIFICATION_PAYLOAD='{"topic":"claude","title":"Claude","message":"Waiting for input"}'
export CLAUDE_NOTIFY_STOP_PAYLOAD='{"topic":"claude","title":"Claude","message":"Complete"}'

For anything else, check your webhook's docs for the expected request body and put that JSON in the payload variables.

Requirements

bash and curl. That's it.