Spock Adb
WahdanZ/SpockAdb
Debug Android apps on a connected device or emulator through the Spock ADB MCP server (tools named android).
A skill your agent uses when discovering, implementing, documenting, or testing Android App Functions (androidx.appfunctions) that expose app capabilities to on-device AI agents like Gemini.
Install Appfunctions
$ npx skills add MartinStyk/apk-analyzer --skill appfunctions -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install MartinStyk/apk-analyzer appfunctions --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/MartinStyk/apk-analyzer.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/appfunctions .claude/skills/appfunctions && 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 "appfunctions" agent skill from https://github.com/MartinStyk/apk-analyzer/tree/develop/.claude/skills/appfunctions into .claude/skills/appfunctions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "appfunctions", 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/MartinStyk/apk-analyzer/tree/develop/.claude/skills/appfunctionsType 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 MartinStyk/apk-analyzer --skill appfunctions -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install MartinStyk/apk-analyzer appfunctions --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/MartinStyk/apk-analyzer.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/appfunctions .agents/skills/appfunctions && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "appfunctions" agent skill from https://github.com/MartinStyk/apk-analyzer/tree/develop/.claude/skills/appfunctions into .agents/skills/appfunctions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "appfunctions", 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 MartinStyk/apk-analyzer --skill appfunctions -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install MartinStyk/apk-analyzer appfunctions --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/MartinStyk/apk-analyzer.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/appfunctions .cursor/skills/appfunctions && 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 "appfunctions" agent skill from https://github.com/MartinStyk/apk-analyzer/tree/develop/.claude/skills/appfunctions into .cursor/skills/appfunctions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "appfunctions", 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/MartinStyk/apk-analyzer.git --path .claude/skills/appfunctions--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 MartinStyk/apk-analyzer --skill appfunctions -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install MartinStyk/apk-analyzer appfunctions --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/MartinStyk/apk-analyzer.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/appfunctions .gemini/skills/appfunctions && 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 "appfunctions" agent skill from https://github.com/MartinStyk/apk-analyzer/tree/develop/.claude/skills/appfunctions into .gemini/skills/appfunctions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "appfunctions", 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 MartinStyk/apk-analyzer appfunctionsInstalls 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 MartinStyk/apk-analyzer --skill appfunctions -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/MartinStyk/apk-analyzer.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/appfunctions .github/skills/appfunctions && 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 "appfunctions" agent skill from https://github.com/MartinStyk/apk-analyzer/tree/develop/.claude/skills/appfunctions into .github/skills/appfunctions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "appfunctions", 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 MartinStyk/apk-analyzer --skill appfunctions -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install MartinStyk/apk-analyzer appfunctions --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/MartinStyk/apk-analyzer.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/appfunctions .opencode/skills/appfunctions && 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 "appfunctions" agent skill from https://github.com/MartinStyk/apk-analyzer/tree/develop/.claude/skills/appfunctions into .opencode/skills/appfunctions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "appfunctions", 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
appfunctions- GitHub stars
- 369
- Token cost
- ~1.4k tokens
- SKILL.md length
- 608 words
- Files
- 7 (incl. references)
- Skills in repo
- 18
- Repo updated
- First seen
- Licence
- GPL-3.0
At a glance
A skill your agent uses when discovering, implementing, documenting, or testing Android App Functions (androidx.appfunctions) that expose app capabilities to on-device AI agents like Gemini.
- Testing Android App Functions (androidx.appfunctions) that expose app capabilities to on-device AI agents like Gemini
- SKILL.md covers Prerequisites, Workflows, Critical constraints and Troubleshooting
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Tasks that involve Android development
What it does
Appfunctions is an agent skill from MartinStyk/apk-analyzer. Use when discovering, implementing, documenting, or testing Android App Functions (androidx.appfunctions) that expose app capabilities to on-device AI agents like Gemini. Triggered by phrases like "add an app function", "implement AppFunctions", "expose this as an app function", "discover app function candidates", "write KDoc for an app function", "optimize for MCP", "test app functions with adb", "list app functions", "invoke an app function".
Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. The skill folder holds 7 other files, including reference files (for example `references/adb-interaction-testing.md`, `references/context.md` and `references/feature-discovery-analysis.md`).
It sits in Mobile, covering Android development and Mobile testing and debugging. It works with Android and Model Context Protocol. The repository describes itself as: The most downloaded APK analysis app on Google Play. Detailed reports of every app on your device. No root, no ads, nothing leaves the phone. The licence is GPL-3.0.
When your agent uses it
- Testing Android App Functions (androidx.appfunctions) that expose app capabilities to on-device AI agents like Gemini
- Tasks that involve Android development
- Tasks that involve Mobile testing and debugging
Example prompts
- “add an app function”
- “implement AppFunctions”
- “expose this as an app function”
- “/appfunctions”
What it can do on your machine
Read from SKILL.md and the folder at commit d807559. 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
Links to these hosts (documentation or services it may open):
github.com
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
Appfunctions loads about 1.4k tokens when it runs, and up to ~9k if it reads all its reference files. Until then it costs about 115 tokens; SKILL.md has 608 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 MartinStyk/apk-analyzer at commit d807559, republished under its GPL-3.0 licence (© MartinStyk). 608 words, ~1,394 tokens.
Download SKILL.mdSave it as
.claude/skills/appfunctions/SKILL.md (or your agent's skills folder). This skill also uses 6 other files; get the full folder from GitHub.- name
- appfunctions
- description
- Use when discovering, implementing, documenting, or testing Android App Functions (androidx.appfunctions) that expose app capabilities to on-device AI agents like Gemini. Triggered by phrases like "add an app function", "implement AppFunctions", "expose this as an app function", "discover app function candidates", "write KDoc for an app function", "optimize for MCP", "test app functions with adb", "list app functions", "invoke an app function".
App Functions
Adapted from the official Android App Functions skill
(Apache License 2.0). core:app-functions is this repo's implementation — read its
AGENTS.md first for the concrete module, service, and
KDoc-exception rules before applying the general guidance below.
Analyzes Android apps to identify key user workflows for AppFunctions such as creating a note, playing media, or sending an automated or AI agent triggered message, voice commands, or system shortcuts, without needing to open the app UI.
Generates Kotlin code to expose these workflows to the Android system, allowing agents to discover and execute them on-device.
Also refines KDoc documentation to ensure AI agents correctly understand and use the provided functionality.
Prerequisites
The app must targetSdk 36 or newer and use compileSdk 37 or newer as AppFunctions, part
of the Android platform API, are available from Android 16 onwards. Always use the Jetpack library
(androidx.appfunctions) because it handles backward compatibility — the manifest component itself
stays inert (never bound) on older platforms as long as it's @RequiresApi(36) /
tools:targetApi="36", so a module with a lower minSdk does not need a runtime SDK check.
Workflows
This skill enables the caller to discover features that will be provided to system agents, implement these with AppFunctions, improve function description for agents, and use ADB commands for local evaluation and testing.
The full AppFunction development flow consists of these four steps:
- Step 1: Discovery: Analyze Android codebases to identify and recommend potential AppFunctions. Use this step when a user asks to "discover AppFunctions," "find features for AI," or "analyze my app for agentic tools."
- Step 2: Implementation and configuration: Generate Kotlin implementations of AppFunctions, manage system-wide configuration, and configure build dependencies. Use this step when a user asks to "implement AppFunctions," "set up the AppFunctions framework," or "configure Hilt for AppFunctions."
- Step 3: KDoc refinement: Optimize AppFunction KDoc for AI agents and Model Context Protocol. If a user asks to "write KDoc", "optimize for MCP", or "refactor tool descriptions for LLMs", use this step.
- Step 4: Testing and debugging: Provide commands to interact with AppFunctions using ADB for testing and debugging. If a user wants to "list app functions", "invoke an app function", or "verify app function registration" on a device, use this step.
Show full SKILL.md (243 more words)Show less
If users request a subset of steps, you must encourage them to use all steps.
If they apply, you must load the following references:
- Context and terminology: Defines the ubiquitous language, architecture definitions, and design patterns across the AppFunctions skill suite. Load when you need to understand core architecture terminology or check the distinctions between modern and legacy AppFunctions APIs.
- Migration to service entry point : Documents the systematic procedure for migrating Android applications using AppFunctions versions 1.0.0-alpha09 and lower to
AppFunctionServiceEntryPointarchitecture introduced in version 1.0.0-alpha10. Load when a user asks to migrate or upgrade existing AppFunctions code, or when you encounter legacyAppFunctionConfiguration.Providerimplementations.
Critical constraints
- Modular consistency: You must refine KDocs immediately after you generate AppFunction implementations.
- Security: Don't expose sensitive data or run destructive actions without user confirmation.
- This repo's KDoc rule: outside
core:app-functions's@AppFunction/@AppFunctionSerializabledeclarations, this repo never writes comments or KDoc. Do not let AppFunction-style documentation leak into other modules. - Multi-module aggregation: only the
appmodule setsksp { arg("appfunctions:aggregateAppFunctions", "true") }; a module that only declares@AppFunctions needs theappfunctionsruntime + compiler dependencies but not that argument — seecore:app-functions/build.gradle.ktsandapp/build.gradle.kts.
Troubleshooting
- If you encounter build-time errors such as Kotlin Symbol Processing (KSP) issues, see Implementation and configuration.
- If you encounter runtime errors such as missing services or execution failures, see Testing and debugging.
- If you need architecture definitions and vocabulary, see Context and terminology.
- If you encounter issues when upgrading legacy configurations, see Migration to service entry point.
© MartinStyk, GPL-3.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 6 other files (references) in .claude/skills/appfunctions of MartinStyk/apk-analyzer.
- SKILL.md
- references/adb-interaction-testing.md
- references/context.md
- references/feature-discovery-analysis.md
- references/implementation-configuration.md
- references/kdoc-refinement-optimization.md
- references/migrate-to-service-entry-point.md
Open the folder on GitHubat commit d807559
Compare with similar skills
Appfunctions 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 |
|---|---|---|---|---|---|---|
| Appfunctions this skillMartinStyk/apk-analyzer | 369 | — | ~1.4k | Automated safety check: Pass | GPL-3.0 | |
| Spock AdbWahdanZ/SpockAdb | 114 | — | ~3.3k | Automated safety check: Pass | Apache-2.0 | |
| Android Developmentdpconde/claude-android-skill | 336 | — | ~1.7k | Automated safety check: Pass | MIT | |
| Run Jetpack Android Appwordpress-mobile/WordPress-Android | 3.2k | — | ~886 | Automated safety check: Pass | GPL-2.0 | |
| Orca Android Emulator Controlstablyai/orca | 87k | — | ~558 | Automated safety check: Pass | Apache-2.0 | |
| Frb Android Emulator Preparefzyzcjy/flutter_rust_bridge | 5.4k | — | ~2.1k | Automated safety check: Notes | MIT |
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Related
Works with
Categories
Questions about Appfunctions
What does Appfunctions do?
A skill your agent uses when discovering, implementing, documenting, or testing Android App Functions (androidx.appfunctions) that expose app capabilities to on-device AI agents like Gemini. Appfunctions is an agent skill from MartinStyk/apk-analyzer.appfunctions) that expose app capabilities to on-device AI agents like Gemini.
When should I use Appfunctions?
Appfunctions fits situations like: testing Android App Functions (androidx.appfunctions) that expose app capabilities to on-device AI agents like Gemini; tasks that involve Android development; tasks that involve Mobile testing and debugging.
How do I install Appfunctions in Claude Code?
Run `npx skills add MartinStyk/apk-analyzer --skill appfunctions -a claude-code`. Or copy the skill folder (.claude/skills/appfunctions in MartinStyk/apk-analyzer) into .claude/skills/appfunctions in your project. Claude Code loads it when a task matches its description.
How do I install Appfunctions in Codex?
Run `npx skills add MartinStyk/apk-analyzer --skill appfunctions -a codex`. Or copy the skill folder (.claude/skills/appfunctions in MartinStyk/apk-analyzer) into .agents/skills/appfunctions in your project. Codex loads it when a task matches its description.
Can I use Appfunctions 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 MartinStyk/apk-analyzer --skill appfunctions -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/appfunctions, .gemini/skills/appfunctions, .github/skills/appfunctions and .opencode/skills/appfunctions in your project.
What does Appfunctions need to run?
SKILL.md names no scripts, command-line tools or credentials: Appfunctions is instructions for the agent only.
Does Appfunctions access the network?
SKILL.md names 1 domain. As links in the text: github.com. This is read from the text; nothing was executed.
Is Appfunctions 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 Appfunctions use?
Appfunctions is published under the GPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Appfunctions use?
About 1.4k tokens (SKILL.md is roughly 5.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 7.6k tokens, read only when the agent opens those files.
What are the alternatives to Appfunctions?
Skills that share tags, products or a category with Appfunctions: Spock Adb (WahdanZ/SpockAdb, 114 stars), Android Development (dpconde/claude-android-skill, 336 stars), Run Jetpack Android App (wordpress-mobile/WordPress-Android, 3.2k stars) and Orca Android Emulator Control (stablyai/orca, 87k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Appfunctions?
MartinStyk (a GitHub user) maintains it in MartinStyk/apk-analyzer, which has 369 GitHub stars. The repository holds 18 skills in this directory. The repository was last updated on October 5, 2026.
Source: MartinStyk/apk-analyzer on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.