Compose Multiplatform
ericrisco/rsc-harness
A skill your agent uses when building one shared Compose UI in Kotlin across Android, iOS, and desktop — commonMain @Composables, expect/actual, source-set placement, native interop, multiplatform…
Synchronize method channels and event streams across Dart, Android (Kotlin), iOS (Swift), and Web.
Install Platform Sync
$ npx skills add brim-borium/spotify_sdk --skill platform-sync -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install brim-borium/spotify_sdk platform-sync --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/brim-borium/spotify_sdk.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/platform-sync .claude/skills/platform-sync && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "platform-sync" agent skill from https://github.com/brim-borium/spotify_sdk/tree/main/.agents/skills/platform-sync into .claude/skills/platform-sync/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "platform-sync", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/brim-borium/spotify_sdk/tree/main/.agents/skills/platform-syncType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add brim-borium/spotify_sdk --skill platform-sync -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install brim-borium/spotify_sdk platform-sync --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/brim-borium/spotify_sdk.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/platform-sync .agents/skills/platform-sync && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "platform-sync" agent skill from https://github.com/brim-borium/spotify_sdk/tree/main/.agents/skills/platform-sync into .agents/skills/platform-sync/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "platform-sync", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add brim-borium/spotify_sdk --skill platform-sync -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install brim-borium/spotify_sdk platform-sync --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/brim-borium/spotify_sdk.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/platform-sync .cursor/skills/platform-sync && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "platform-sync" agent skill from https://github.com/brim-borium/spotify_sdk/tree/main/.agents/skills/platform-sync into .cursor/skills/platform-sync/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "platform-sync", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/brim-borium/spotify_sdk.git --path .agents/skills/platform-sync--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add brim-borium/spotify_sdk --skill platform-sync -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install brim-borium/spotify_sdk platform-sync --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/brim-borium/spotify_sdk.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/platform-sync .gemini/skills/platform-sync && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "platform-sync" agent skill from https://github.com/brim-borium/spotify_sdk/tree/main/.agents/skills/platform-sync into .gemini/skills/platform-sync/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "platform-sync", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install brim-borium/spotify_sdk platform-syncInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add brim-borium/spotify_sdk --skill platform-sync -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/brim-borium/spotify_sdk.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/platform-sync .github/skills/platform-sync && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "platform-sync" agent skill from https://github.com/brim-borium/spotify_sdk/tree/main/.agents/skills/platform-sync into .github/skills/platform-sync/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "platform-sync", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add brim-borium/spotify_sdk --skill platform-sync -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install brim-borium/spotify_sdk platform-sync --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/brim-borium/spotify_sdk.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/platform-sync .opencode/skills/platform-sync && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "platform-sync" agent skill from https://github.com/brim-borium/spotify_sdk/tree/main/.agents/skills/platform-sync into .opencode/skills/platform-sync/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "platform-sync", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
platform-sync- GitHub stars
- 166
- Token cost
- ~456 tokens
- SKILL.md length
- 81 words
- Files
- 1
- Skills in repo
- 9
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Synchronize method channels and event streams across Dart, Android (Kotlin), iOS (Swift), and Web.
- Works in 5 steps: Constants: Declare method name in… → Dart Interface: Invoke channel method in… → iOS Swift: Implement method case in… → …
- Tasks that involve Android development
- SKILL.md covers Reference Map and Synchronization Workflow
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Platform Sync is an agent skill from brim-borium/spotify_sdk. Synchronize method channels and event streams across Dart, Android (Kotlin), iOS (Swift), and Web.
Its SKILL.md is about 460 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Mobile, covering Android development and iOS development. It works with Dart, Android, iOS and Kotlin. The repository describes itself as: Flutter Package to connect the spotify sdk. The licence is Apache-2.0.
When your agent uses it
- Tasks that involve Android development
- Tasks that involve iOS development
Example prompts
- “/platform-sync”
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Constants: Declare method name in MethodNames inside platform_channels.dart.
- Dart Interface: Invoke channel method in spotify_sdk.dart; catch, log via _logException, and rethrow.
- iOS Swift: Implement method case in SwiftSpotifySdkPlugin.swift.
- Android Kotlin: Implement method branch in SpotifySdkPlugin.kt.
- Web Interop: Implement platform override in spotify_sdk_web.dart.
What it can do on your machine
Read from SKILL.md and the folder at commit 2622fc0. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Platform Sync loads about 456 tokens when it runs. Until then it costs about 28 tokens; SKILL.md has 81 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from brim-borium/spotify_sdk at commit 2622fc0, republished under its Apache-2.0 licence (© brim-borium). 81 words, ~456 tokens.
Download SKILL.mdSave it as
.claude/skills/platform-sync/SKILL.md (or your agent's skills folder).- name
- platform-sync
- description
- Synchronize method channels and event streams across Dart, Android (Kotlin), iOS (Swift), and Web.
Platform Channel Synchronization (platform-sync)
All APIs must be synchronized across Dart, Android, iOS, and Web.
Reference Map
- Dart API: packages/spotify_sdk/lib/spotify_sdk.dart
- Central Constants: packages/spotify_sdk_platform_interface/lib/platform_channels.dart
- iOS Wrapper: packages/spotify_sdk_ios/ios/Classes/SwiftSpotifySdkPlugin.swift
- Android Wrapper: packages/spotify_sdk_android/android/src/main/kotlin/de/minimalme/spotify_sdk/SpotifySdkPlugin.kt
- Web Wrapper: packages/spotify_sdk_web/lib/spotify_sdk_web.dart
Synchronization Workflow
- Constants: Declare method name in
MethodNamesinside platform_channels.dart. - Dart Interface: Invoke channel method in spotify_sdk.dart; catch, log via
_logException, and rethrow. - iOS Swift: Implement method case in SwiftSpotifySdkPlugin.swift.
- Android Kotlin: Implement method branch in SpotifySdkPlugin.kt.
- Web Interop: Implement platform override in spotify_sdk_web.dart.
© brim-borium, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in .agents/skills/platform-sync of brim-borium/spotify_sdk.
Open the folder on GitHubat commit 2622fc0
Compare with similar skills
Platform Sync next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Platform Sync this skillbrim-borium/spotify_sdk | 166 | — | ~456 | Automated safety check: Pass | Apache-2.0 | |
| Compose Multiplatformericrisco/rsc-harness | 167 | — | ~2.7k | Automated safety check: Pass | MIT | |
| Expo Brownfield Integrationmweinbach/agent-coworker | 156 | 2 repos | ~900 | Automated safety check: Notes | Custom licence | |
| Simulator Audio E2Ehyochan/react-native-nitro-sound | 961 | — | ~1.1k | Automated safety check: Pass | MIT | |
| Ksafeioannisa/KSafe | 332 | — | ~17k | Automated safety check: Pass | Apache-2.0 | |
| Moq Kitsoftware-mansion-labs/skills | 291 | — | ~5k | Automated safety check: Pass | Apache-2.0 |
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Related
Categories
Questions about Platform Sync
What does Platform Sync do?
Synchronize method channels and event streams across Dart, Android (Kotlin), iOS (Swift), and Web. Platform Sync is an agent skill from brim-borium/spotify_sdk. Synchronize method channels and event streams across Dart, Android (Kotlin), iOS (Swift), and Web.
When should I use Platform Sync?
Platform Sync fits situations like: tasks that involve Android development; tasks that involve iOS development.
How do I install Platform Sync in Claude Code?
Run `npx skills add brim-borium/spotify_sdk --skill platform-sync -a claude-code`. Or copy the skill folder (.agents/skills/platform-sync in brim-borium/spotify_sdk) into .claude/skills/platform-sync in your project. Claude Code loads it when a task matches its description.
How do I install Platform Sync in Codex?
Run `npx skills add brim-borium/spotify_sdk --skill platform-sync -a codex`. Or copy the skill folder (.agents/skills/platform-sync in brim-borium/spotify_sdk) into .agents/skills/platform-sync in your project. Codex loads it when a task matches its description.
Can I use Platform Sync in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add brim-borium/spotify_sdk --skill platform-sync -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/platform-sync, .gemini/skills/platform-sync, .github/skills/platform-sync and .opencode/skills/platform-sync in your project.
What does Platform Sync need to run?
SKILL.md names no scripts, command-line tools or credentials: Platform Sync is instructions for the agent only.
Does Platform Sync access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Platform Sync safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Platform Sync use?
Platform Sync is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Platform Sync use?
About 456 tokens (SKILL.md is roughly 1.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Platform Sync?
Skills that share tags, products or a category with Platform Sync: Compose Multiplatform (ericrisco/rsc-harness, 167 stars), Expo Brownfield Integration (mweinbach/agent-coworker, 156 stars), Simulator Audio E2E (hyochan/react-native-nitro-sound, 961 stars) and Ksafe (ioannisa/KSafe, 332 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Platform Sync?
brim-borium (a GitHub user) maintains it in brim-borium/spotify_sdk, which has 166 GitHub stars. The repository holds 9 skills in this directory. The repository was last updated on October 6, 2026.
Source: brim-borium/spotify_sdk on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.