--- title: RT @lydiahallie: Claude Code now supports an `if` field... description: Claude Code has added support for an `if` field in hooks, using permission rule syntax to filter when a hook runs. This enables more conditional control over... canonical: https://daily.dev/posts/rt-lydiahallie-claude-code-now-supports-an-if-field-in-hooks-it-uses-permission-rule-syntax-to--uwzigtgsd twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: RT @lydiahallie: Claude Code now supports an `if` field in hooks It uses permission rule syntax to filter when a hook runs, which is usefu… | daily.dev og:description: Claude Code has added support for an `if` field in hooks, using permission rule syntax to filter when a hook runs. This enables more conditional control over... og:url: https://daily.dev/posts/rt-lydiahallie-claude-code-now-supports-an-if-field-in-hooks-it-uses-permission-rule-syntax-to--uwzigtgsd og:image: https://api.daily.dev/og/posts/uWzIgtgsD.png og:image:alt: RT @lydiahallie: Claude Code now supports an `if` field in hooks It uses permission rule syntax to filter when a hook runs, which is usefu… og:image:width: 1200 og:image:height: 630 og:locale: en --- [Boris Cherny](https://daily.dev/sources/bcherny) [Read on](https://api.daily.dev/r/uWzIgtgsD) Mar 27 • From x.com  Boris Cherny @bcherny RT @lydiahallie: Claude Code now supports an \`if\` field in hooks It uses permission rule syntax to filter when a hook runs, which is usefu… Comment Bookmark Copy Share your thoughts Post Share this post [](https://daily.dev/sources/bcherny) [Boris Cherny](https://daily.dev/sources/bcherny "https://daily.dev/sources/bcherny") 25 Followers • 13 Upvotes #### Would you recommend this post? Copy link Slack WhatsApp Facebook X New Squad Copy linkShare with your friends ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"RT @lydiahallie: Claude Code now supports an `if` field in hooks\n\nIt uses permission rule syntax to filter when a hook runs, which is usefu…","url":"https://daily.dev/posts/rt-lydiahallie-claude-code-now-supports-an-if-field-in-hooks-it-uses-permission-rule-syntax-to--uwzigtgsd","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/rt-lydiahallie-claude-code-now-supports-an-if-field-in-hooks-it-uses-permission-rule-syntax-to--uwzigtgsd"},"datePublished":"2026-03-27T16:55:41.118Z","dateModified":"2026-03-27T16:56:24.143Z","description":"Claude Code has added support for an `if` field in hooks, using permission rule syntax to filter when a hook runs. This enables more conditional control over...","image":"https://media.daily.dev/image/upload/s--ZrL_HSsR--/f_auto/v1722860399/public/Placeholder%2006","thumbnailUrl":"https://media.daily.dev/image/upload/s--ZrL_HSsR--/f_auto/v1722860399/public/Placeholder%2006","isAccessibleForFree":true,"articleSection":"Boris Cherny","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Boris Cherny","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/2ef95f0af741426c85c1d51230f37d8e","url":"https://daily.dev/sources/bcherny"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/rt-lydiahallie-claude-code-now-supports-an-if-field-in-hooks-it-uses-permission-rule-syntax-to--uwzigtgsd","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":""} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Boris Cherny","item":"https://daily.dev/sources/bcherny"},{"@type":"ListItem","position":3,"name":"RT @lydiahallie: Claude Code now supports an `if` field in hooks\n\nIt uses permission rule syntax to filter when a hook runs, which is usefu…"}]} ```