Webhook
Domain: Agent Fundamentals
🎯 Motivation
A webhook is an HTTP callback: when something happens in one system, it sends an HTTP request to another system (like an agent) to trigger action.
📋 Concrete Example
GitHub PR opened -> webhook sends POST to agent’s URL -> agent receives it, reviews code, posts comments. The webhook connects the event to the agent.
🔗 Analogy
A doorbell - when someone presses it (event), it rings inside (callback). You do not need to check the door constantly. Webhooks are doorbells for software - they notify when something happens.