Hook

You might say

Does this tool support a post-write Hook? If so, have it format only the files that just changed.

An automated mechanism that intercepts execution upon specific lifecycle events to run predefined scripts or checks.For example, Git can run a check before committing, and some AI tools provide an event after writing a file. The specific event names, parameters, and whether a failure blocks later steps depend on the product. Review the current tool documentation before configuration, and keep dangerous scripts bounded by permissions.

Git Hook

How does a Hook run a check after a file write?

Lifecycle event

For example, an action starts or finishes

triggers

Hook

Runs when the configured event occurs

runs action

Command or result

Runs a check, records data, or performs a follow-up

A Hook is an event-triggered action, not a prompt the user must type every time.

What does a Hook do?

Listen for lifecycle events: A Hook can attach to startup, after a file write, or before a command runs.

Run a preset task: When the event occurs, the tool runs the configured formatter, check, or setup script.

A failure can stop the next action: A pre-commit test hook can block a commit on failure, while running heavy tests after every write can slow the workflow.

Quick checkChoose the best answer

Which mechanism fits automatic formatting after the AI writes a file?

Configure a post-write Hook to run the formatter after the file-write eventCreate a Skill and let the agent decide whether to format each timeA Hook will automatically repair business logic bugs in generated code

You can say this to an AI Agent

Configure a post-write formatting hook for .ts and .tsx files. Explain when it runs and what it changes, and make sure it cannot read secrets or touch unrelated directories.

Learn next

1Skill→2Plugin→3Permission Mode→

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