agent-runtime-hooks
Agent runtime lifecycle hooks. Use for before/after tool or step hooks, tool mocks, human intervention, sub-agent calls, context compression, evals, tracing, callAgent, or lifecycle events.
Profile →npx skills add lobehub/lobehub --skill agent-runtime-hooks --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Agent Runtime Hooks Lifecycle hooks for observing and intercepting agent execution. Hooks are registered per-operation via `execAgent({ hooks })` and dispatched by `HookDispatcher`. ## Hook Types 16 hook types across 5 categories: ``` execAgent({ hooks }) │ ├─ beforeStep ──────────── Before each step executes │ │ │ ├─ [call_llm] LLM inference │ │ │ ├─ [call_tool] │ │ ├─ beforeToolCall ── Before tool executes (supports mocking) │ │ ├─ (tool execution) │ │ ├─ afterToolCall ─── After tool completes (observation only) │ │ └─ onToolCallError ─ Tool threw an exception │ │ │ ├─ [request_human_approve] │ │ ├─ beforeHumanIntervention ── Before agent pauses │ │ ├─ afterHumanIntervention ─── After approve/reject + resume │ │ └─ onStopByHumanIntervention ── User rejected, agent halted │ │ │ ├─ [compress_context] │ │ ├─ beforeCompact ──── Before compression starts │ │ ├─ afterCompact ───── After compression completes │ │ └─ onCompactError ─── Compression failed │ │ │ ├─ [callAgent] (via execSubAgentTask) │ │ ├─ beforeCallAgent ── Before sub-agent starts │ │ ├─ afterCallAgent ─── After sub-agent completes │ │ └─ onCallAgentError ── Sub-agent failed │ │ │ └─ afterStep ──────────── After step co
- Hook Types
- Key Files
- Registration Flow
- Hook Reference
- Step Level
- Tool Call Level
- Human Intervention
- Context Compression
- Sub-Agent (CallAgent)
- Design Notes
- Real-World Example: agent-evals
What does the agent-runtime-hooks skill do?
Agent runtime lifecycle hooks. Use for before/after tool or step hooks, tool mocks, human intervention, sub-agent calls, context compression, evals, tracing, callAgent, or lifecycle events.
How do I install it?
Run `npx skills add lobehub/lobehub --skill agent-runtime-hooks --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From lobehub/lobehub, a repository with 81,252 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.