Extensibility on emsenn.net

ClawHub

Mon, 09 Mar 2026 00:00:00 +0000

ClawHub is the public skill registry for OpenClaw. It provides a discovery and distribution surface for versioned skill bundles.

¶Role

The official docs position ClawHub as the normal way to search, install, update, and publish OpenClaw skills. Its CLI supports search, installation, updates, and sync-based publishing.

¶Function

ClawHub turns skills into portable, shareable artifacts rather than only local folders. It therefore extends OpenClaw’s skill system with a public registry layer.

OpenClaw ACP Agent

Mon, 09 Mar 2026 00:00:00 +0000

An OpenClaw ACP agent is an external harness runtime that OpenClaw can run through an ACP backend plugin. ACP agents let OpenClaw delegate work to tools such as Codex, Claude Code, OpenCode, Gemini CLI, or Pi without reducing them to native OpenClaw sub-agents.

¶Role

The official ACP docs distinguish ACP sessions from OpenClaw-native sub-agent runs. ACP is used when the operator wants an external runtime, its own session semantics, or harness-specific capabilities.

OpenClaw Hook

Mon, 09 Mar 2026 00:00:00 +0000

An OpenClaw hook is a directory-discovered event handler that runs when command or lifecycle events fire inside the Gateway. Hooks are the event-driven automation layer of OpenClaw.

¶Structure

The official hooks docs describe a hook as a directory containing HOOK.md plus a TypeScript handler. Hooks are discovered from workspace, managed, and bundled directories, with workspace hooks having highest precedence.

¶Role

Hooks let operators attach automation to events such as /new, bootstrap, or gateway startup. The bundled session-memory, bootstrap-extra-files, command-logger, and boot-md hooks show the main current uses: memory capture, workspace augmentation, audit logging, and startup actions.

OpenClaw Plugin Slot

Mon, 09 Mar 2026 00:00:00 +0000

An OpenClaw plugin slot is an exclusive plugin category where only one plugin can own a given runtime role at a time. Slots let OpenClaw keep its core lean while making selected extension points explicit and mutually exclusive.

¶Examples

OpenClaw documents memory and contextEngine as plugin slots. If multiple plugins declare the same exclusive kind, only the selected plugin loads for that slot and the others remain disabled.

OpenClaw Skill

Mon, 09 Mar 2026 00:00:00 +0000

An OpenClaw skill is a directory-based instruction and tool bundle that teaches an OpenClaw agent how to perform a specialized task. The official docs define a skill as a directory containing a SKILL.md file and, optionally, scripts or other resources.

¶Loading model

The official skills documentation describes three main loading locations:

bundled skills shipped with OpenClaw
managed or local skills under ~/.openclaw/skills
workspace skills under <workspace>/skills

When names conflict, workspace skills take precedence over shared and bundled skills.