Writing Hookify Rules

To block dangerous bash commands in Claude, you create Hookify rules using local markdown files with valid YAML frontmatter. These files define regex patterns to match risky commands and trigger warnings or blocks before execution.

Hookify rules are markdown files with YAML frontmatter that detect user-defined patterns in Claude workflows. They apply regex or condition-based matching to bash commands, file edits, prompt phrases, and stop events to trigger warnings, blocks, or completion checks.

Yes, you can use regex in Hookify rules to warn against sensitive file edits in Claude. By defining the appropriate regex patterns in the YAML frontmatter, the rule matches file edit operations and displays a markdown warning message.

You configure a completion check for stop events by creating a Hookify rule with YAML frontmatter targeting the stop event. Use condition-based matching to verify tasks like running tests, storing the rule as a local markdown file to remind the agent before ending.

Yes, valid YAML frontmatter is required to write workflow guardrails for prompt-triggered conditions. The YAML section defines the rule's enabled state, target events, and matching conditions, while the markdown body holds the warning message.