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- Add pi.getTools() and pi.setTools(toolNames) to HookAPI - Hooks can now enable/disable tools dynamically - Changes take effect on next agent turn New example hook: plan-mode.ts - Claude Code-style read-only exploration mode - /plan command toggles plan mode on/off - Plan mode tools: read, bash, grep, find, ls - Edit/write tools disabled in plan mode - Injects context telling agent about restrictions - After each response, prompts to execute/stay/refine - State persists across sessions
58 lines
2.2 KiB
Markdown
58 lines
2.2 KiB
Markdown
# Hooks Examples
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Example hooks for pi-coding-agent.
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## Usage
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```bash
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# Load a hook with --hook flag
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pi --hook examples/hooks/permission-gate.ts
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# Or copy to hooks directory for auto-discovery
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cp permission-gate.ts ~/.pi/agent/hooks/
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```
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## Examples
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| Hook | Description |
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|------|-------------|
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| `plan-mode.ts` | Claude Code-style plan mode for read-only exploration with `/plan` command |
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| `permission-gate.ts` | Prompts for confirmation before dangerous bash commands (rm -rf, sudo, etc.) |
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| `git-checkpoint.ts` | Creates git stash checkpoints at each turn for code restoration on branch |
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| `protected-paths.ts` | Blocks writes to protected paths (.env, .git/, node_modules/) |
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| `file-trigger.ts` | Watches a trigger file and injects contents into conversation |
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| `confirm-destructive.ts` | Confirms before destructive session actions (clear, switch, branch) |
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| `dirty-repo-guard.ts` | Prevents session changes with uncommitted git changes |
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| `auto-commit-on-exit.ts` | Auto-commits on exit using last assistant message for commit message |
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| `custom-compaction.ts` | Custom compaction that summarizes entire conversation |
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| `qna.ts` | Extracts questions from last response into editor via `ctx.ui.setEditorText()` |
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| `snake.ts` | Snake game with custom UI, keyboard handling, and session persistence |
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| `status-line.ts` | Shows turn progress in footer via `ctx.ui.setStatus()` with themed colors |
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| `handoff.ts` | Transfer context to a new focused session via `/handoff <goal>` |
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| `todo/` | Adds `/todos` command to view todos managed by the [todo custom tool](../custom-tools/todo/) |
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## Writing Hooks
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See [docs/hooks.md](../../docs/hooks.md) for full documentation.
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```typescript
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import type { HookAPI } from "@mariozechner/pi-coding-agent/hooks";
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export default function (pi: HookAPI) {
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// Subscribe to events
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pi.on("tool_call", async (event, ctx) => {
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if (event.toolName === "bash" && event.input.command?.includes("rm -rf")) {
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const ok = await ctx.ui.confirm("Dangerous!", "Allow rm -rf?");
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if (!ok) return { block: true, reason: "Blocked by user" };
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}
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});
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// Register custom commands
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pi.registerCommand("hello", {
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description: "Say hello",
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handler: async (args, ctx) => {
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ctx.ui.notify("Hello!", "info");
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},
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});
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}
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```
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