--- title: Bring business context with external custom properties description: GitHub has released external custom properties in public preview, letting organizations sync business context—such as ownership, service tier, lifecycle stage,... canonical: https://daily.dev/posts/bring-business-context-with-external-custom-properties-1fx7zm3ts twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Bring business context with external custom properties | daily.dev og:description: GitHub has released external custom properties in public preview, letting organizations sync business context—such as ownership, service tier, lifecycle stage,... og:url: https://daily.dev/posts/bring-business-context-with-external-custom-properties-1fx7zm3ts og:image: https://api.daily.dev/og/posts/1FX7Zm3TS.png og:image:alt: Bring business context with external custom properties og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Bring business context with external custom properties **[GitHub Changelog](https://daily.dev/sources/github_updates)** · 2 min read · 0 upvotes · 0 comments ## Summary GitHub has released external custom properties in public preview, letting organizations sync business context—such as ownership, service tier, lifecycle stage, and compliance status—from an external system of record like a CMDB or internal developer portal directly into GitHub. These properties are read-only in the GitHub UI, ensuring the external system remains the single source of truth while values stay usable across repository views, filtering, and ruleset targeting. Port.io is the first launch partner, with APIs available for any enterprise to build its own integration. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What are GitHub external custom properties and how do they differ from regular custom properties? External custom properties, now in public preview, let an external system of record such as a CMDB or internal developer portal own and continuously sync business context like ownership, service tier, or compliance status into GitHub. Unlike regular custom properties, they are read-only in the GitHub UI, preventing conflicting edits, and are managed under a dedicated namespace tied to the integration's own prefix. _Platform teams weighing how to keep repository metadata in sync can follow github changelog updates on daily.dev._ ### How do I sync Port.io data to GitHub custom properties? Port.io is the first partner integration for GitHub's external custom properties feature, allowing teams to sync business context from Port directly to GitHub repositories as read-only properties. Setup is covered in Port.io's integration guide, which walks through connecting Port properties to GitHub's external custom properties APIs so values stay current automatically. _Teams evaluating internal developer portal integrations can track tooling updates like this via daily.dev._ ## Similar posts on daily.dev - [Organization custom properties now generally available](https://daily.dev/posts/organization-custom-properties-now-generally-available-wlfiy4dov) · GitHub Changelog · 1 upvotes · 0 comments - [GitHub Copilot suggests custom properties definitions](https://daily.dev/posts/github-copilot-suggests-custom-properties-definitions-vfc5qpnvn) · GitHub Changelog · 0 upvotes · 0 comments - [Port announces AI Builder vibe coding experience for platform engineering](https://daily.dev/posts/port-announces-ai-builder-vibe-coding-experience-for-platform-engineering-tmgxfzvfv) · SD Times · 1 upvotes · 0 comments - [Port raises $100M at $800M valuation to take on Spotify’s Backstage](https://daily.dev/posts/port-raises-100m-at-800m-valuation-to-take-on-spotify-s-backstage-zuwi3atfj) · TechCrunch · 0 upvotes · 0 comments - [Why AI agents need a Context Lake](https://daily.dev/posts/why-ai-agents-need-a-context-lake-bdkjprhe2) · The New Stack · 1 upvotes · 0 comments --- Tags: [#github](https://daily.dev/tags/github) [View this post on daily.dev](https://daily.dev/posts/bring-business-context-with-external-custom-properties-1fx7zm3ts) ```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":"Bring business context with external custom properties","url":"https://daily.dev/posts/bring-business-context-with-external-custom-properties-1fx7zm3ts","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/bring-business-context-with-external-custom-properties-1fx7zm3ts"},"datePublished":"2026-09-29T19:06:50.729Z","dateModified":"2026-09-29T19:07:29.095Z","description":"GitHub has released external custom properties in public preview, letting organizations sync business context—such as ownership, service tier, lifecycle stage,...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/55b295f1354ce9a2db49c8c194004d70?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/55b295f1354ce9a2db49c8c194004d70?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"GitHub Changelog","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":"GitHub Changelog","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/15004b7835da4d89b02b115871f0f6dc","url":"https://daily.dev/sources/github_updates"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/bring-business-context-with-external-custom-properties-1fx7zm3ts","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"github","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"GitHub Changelog","item":"https://daily.dev/sources/github_updates"},{"@type":"ListItem","position":3,"name":"Bring business context with external custom properties"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/bring-business-context-with-external-custom-properties-1fx7zm3ts#faq","mainEntity":[{"@type":"Question","name":"What are GitHub external custom properties and how do they differ from regular custom properties?","acceptedAnswer":{"@type":"Answer","text":"External custom properties, now in public preview, let an external system of record such as a CMDB or internal developer portal own and continuously sync business context like ownership, service tier, or compliance status into GitHub. 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