Automate actions with hooks changedhooks-guide
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514514Each hook has a `type` that determines how it runs. Most hooks use `"type": "command"`, which runs a shell command. Four other types are available:
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516516* `"type": "http"`: POST event data to a URL. See [HTTP hooks](#http-hooks).
517* `"type": "mcp_tool"`: call a tool on an already-connected MCP server. See [MCP tool hooks](/docs/en/hooks#mcp-tool-hook-fields).
517* `"type": "mcp_tool"`: call a tool on a configured MCP server. See [MCP tool hooks](/docs/en/hooks#mcp-tool-hook-fields).
518518* `"type": "prompt"`: single-turn LLM evaluation. See [Prompt-based hooks](#prompt-based-hooks).
519519* `"type": "agent"`: multi-turn verification with tool access. Agent hooks are experimental and may change. See [Agent-based hooks](#agent-based-hooks).
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