capacitor-app-upgrade-v8-to-v9 SKILL.md skillA
capacitor-app-upgrade-v8-to-v9 from cap-go/capgo-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add cap-go/capgo-skills/capacitor-app-upgrade-v8-to-v9@git:20261011.86834d4Pins git:20261011.86834d4 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- cap-go/capgo-skills
- Path
skills/capacitor-app-upgrade-v8-to-v9/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261011.86834d4, committed Oct 11, 2026
- Size
- 7,651 bytes
- Repository stars
- 74
- License
- MIT
Upgrades a Capacitor app from v8 to v9 (prerelease, installed with @next until GA). Covers preflight (Node 24, Xcode 27, Android Studio 2026.1.1, UIScene adoption from 8.5), `npx cap migrate`, and the manual checklist - iOS 16 target, @UIApplicationMain to @main, removed CAPBridge APIs, AGP 9.2.1, Gradle 9.5.1, SDK 37/minSdk 26, gradle.properties cleanup, built-in Kotlin, jcenter removal, core-ktx, proguard-android.txt rename, optional Cordova runtime, `cap run --url`, push `alert` removal…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Capacitor App Upgrade v8 to v9 Capacitor 9 is a prerelease (`next` dist-tag, 9.0.0-alpha.x as of October 2026). Install with `@next`; switch to `@latest` / `^9.0.0` once 9.0.0 is GA. Tell the user it is not GA before upgrading a production app, and work on a branch. Canonical source: https://capacitorjs.com/docs/updating/9-0 ## When to Use TRIGGER when: - App is on `@capacitor/core` 8.x and the user wants Capacitor 9 - Build errors after moving to Xcode 27 / Swift 6, AGP 9, or Gradle 9 in a Capacitor 8 app - `npx cap run -l --host ...` no longer works (`--url` replaced it) - Push notifications `presentationOptions: ['alert']` stopped showing banners on iOS - Cordova-plugin-free app fails on `CapacitorCordova` / `com.getcapacitor.cordova` references after upgrading Do not use: - App still on 7 or older -> `capacitor-app-upgrades` (chain majors first) - Only the 8.4 -> 8.5 UIScene step -> `capacitor-uiscene-migration` - Plugin library repo -> `capacitor-plugin-upgrade-v8-to-v9` - CocoaPods to SPM move -> `cocoapods-to-spm` (recommended, separate step) ## Live Project Snapshot …
Read the whole file at its exact version.
How to install
mdr add cap-go/capgo-skills/capacitor-app-upgrade-v8-to-v9@sha256:0db4f9d5999521c3The line at the top of this page pins the label git:20261011.86834d4, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_tz7z3mrc57rmggkc)
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Versions
The registry has recorded 1 version of this file, committed on Oct 11, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (7651 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
cap-go/capgo-skills · 74 stars · license MIT · pushed 2026-10-17 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_tz7z3mrc57rmggkc GET https://markdownregistry.com/api/v1/resolve?ref=cap-go/capgo-skills/capacitor-app-upgrade-v8-to-v9 GET https://markdownregistry.com/api/v1/blob/0db4f9d5999521c3543620ed9ae6c649068024707bf44cc3c1ba306de53f708a
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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