Claude Webhooks

Claude Notifications for Agents

Receive real-time webhooks from GitHub, Linear, Stripe, and other services directly in your Claude Code sessions.

How It Works

1. A macOS menu bar app runs a local HTTP server
2. A Cloudflare Tunnel exposes it to the internet
3. External services send webhooks to your tunnel URL
4. Signatures are verified (HMAC-SHA256) to ensure only authentic events are accepted
5. Events are delivered into your Claude Code session as prompts — as if a user typed them

Quick Start

1. Build the app

cd ClaudeWebhooks
swift build -c release
open .build/*/release/ClaudeWebhooks

2. Install the plugin

claude plugin marketplace add https://github.com/Connoropolous/claude-notifications-for-agents
claude plugin add claude-webhooks --scope user

3. Set up a tunnel

In Claude Code, run /setup-tunnel and follow the prompts. You'll need:

• cloudflared installed (brew install cloudflared)
• A Cloudflare account with a domain

4. Subscribe to events

In Claude Code, run /subscribe and tell it what you want:

/subscribe github pushes on myorg/myrepo
/subscribe linear issue updates
/subscribe stripe payment events

The skill handles everything: generates secrets, creates the subscription, registers the webhook on the service.

What Gets Delivered

When a webhook fires, Claude sees something like:

<webhook-event service="github" event-id="ABC123">
A push event was received on myorg/myrepo. Review the changes.
<payload>
{"branch":"refs/heads/main","pusher":"connor","commits":[{"message":"fix bug"}]}
</payload>
</webhook-event>

Payloads are summarized to save context window space. Claude can fetch the full payload with the get_event_payload tool.

Components

ClaudeWebhooks/	macOS menu bar app (Swift)
plugin/	Claude Code plugin with /subscribe and /setup-tunnel skills
cli.js	Socket patch for the @anthropic-ai/claude-agent-sdk npm package's cli.js (view diff)

Security

• All incoming webhooks are verified via HMAC-SHA256 signature before being accepted
• The cli.js file is a patched copy of cli.js from Claude Code v2.1.42 (bundled via @anthropic-ai/claude-agent-sdk). The only change adds Unix socket support so external processes can deliver messages into a running session. No other modifications were made.

Requirements

• macOS 14+
• cloudflared for tunnel
• jq for payload filtering
• A domain on Cloudflare DNS