5 pages for filechanged.
Titles and paths first, then pages whose text carries it. Each row opens that page as this site last read it.
Intercept and control agent behavior with hooks
Claude Code CLI · in the page
agent-sdk/hooks
…es during a session | Reload environment variables per directory | | `FileChanged` | No | Yes | A watched file is modified, created, or deleted | Reload configuration when project files change | | `Di…
Agent SDK reference - TypeScript
Claude Code CLI · in the page
agent-sdk/typescript
…" | "WorktreeRemove" | "InstructionsLoaded" | "CwdChanged" | "FileChanged" | "MessageDisplay"; ``` ### `HookCallback` Hook callback function type. ```typescript theme={null} type HookCall…
Hooks reference
Claude Code CLI · in the page
hooks
…eeRemove, Notification, ConfigChange, InstructionsLoaded, CwdChanged, FileChanged, and DirectoryAdded as standalone async events, PreModelSwitch as a standalone sequential event that runs before a req…
Automate actions with hooks
Claude Code CLI · in the page
hooks-guide
…wever it changes, including when a `Bash` command rewrites it, use a [FileChanged](/docs/en/hooks.md#filechanged) hook instead. > [!NOTE] > > The Bash examples on this page use `jq` for JSON parsing.…
Week 13 · March 23–27, 2026
Claude Code CLI · in the page
whats-new/2026-w13
…s.d/` drop-in directory for layered policy fragments`CwdChanged` and `FileChanged` hook events for direnv-style setupsAgents can declare `initialPrompt` in frontmatter to auto-submit a first turn`Ctrl…