Android Audio E2E
hyochan/react-native-nitro-sound
Build and run device-backed Android end-to-end checks for react-native-nitro-sound permissions, recording, playback, listeners, pause/resume, seek, speed, audio focus, lifecycle behavior, and rapid…
Looks up Android framework Java and AIDL APIs across versions with the android-api-diff CLI: signatures, availability, source files and hidden-API access code.
Install Android API Diff
$ npx skills add gkd-kit/gkd --skill android-api-diff -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install gkd-kit/gkd android-api-diff --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/gkd-kit/gkd.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/android-api-diff .claude/skills/android-api-diff && 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 "android-api-diff" agent skill from https://github.com/gkd-kit/gkd/tree/main/.agents/skills/android-api-diff into .claude/skills/android-api-diff/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "android-api-diff", 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/gkd-kit/gkd/tree/main/.agents/skills/android-api-diffType 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 gkd-kit/gkd --skill android-api-diff -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install gkd-kit/gkd android-api-diff --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/gkd-kit/gkd.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/android-api-diff .agents/skills/android-api-diff && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "android-api-diff" agent skill from https://github.com/gkd-kit/gkd/tree/main/.agents/skills/android-api-diff into .agents/skills/android-api-diff/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "android-api-diff", 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 gkd-kit/gkd --skill android-api-diff -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install gkd-kit/gkd android-api-diff --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/gkd-kit/gkd.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/android-api-diff .cursor/skills/android-api-diff && 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 "android-api-diff" agent skill from https://github.com/gkd-kit/gkd/tree/main/.agents/skills/android-api-diff into .cursor/skills/android-api-diff/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "android-api-diff", 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/gkd-kit/gkd.git --path .agents/skills/android-api-diff--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 gkd-kit/gkd --skill android-api-diff -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install gkd-kit/gkd android-api-diff --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/gkd-kit/gkd.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/android-api-diff .gemini/skills/android-api-diff && 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 "android-api-diff" agent skill from https://github.com/gkd-kit/gkd/tree/main/.agents/skills/android-api-diff into .gemini/skills/android-api-diff/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "android-api-diff", 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 gkd-kit/gkd android-api-diffInstalls 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 gkd-kit/gkd --skill android-api-diff -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/gkd-kit/gkd.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/android-api-diff .github/skills/android-api-diff && 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 "android-api-diff" agent skill from https://github.com/gkd-kit/gkd/tree/main/.agents/skills/android-api-diff into .github/skills/android-api-diff/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "android-api-diff", 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 gkd-kit/gkd --skill android-api-diff -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install gkd-kit/gkd android-api-diff --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/gkd-kit/gkd.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/android-api-diff .opencode/skills/android-api-diff && 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 "android-api-diff" agent skill from https://github.com/gkd-kit/gkd/tree/main/.agents/skills/android-api-diff into .opencode/skills/android-api-diff/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "android-api-diff", 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
android-api-diff- GitHub stars
- 43k
- Token cost
- ~796 tokens
- SKILL.md length
- 340 words
- Files
- 2
- Skills in repo
- 2
- Repo updated
- First seen
- Licence
- GPL-3.0
At a glance
Looks up Android framework Java and AIDL APIs across versions with the android-api-diff CLI: signatures, availability, source files and hidden-API access code.
- Finding which Android versions include a framework API
- SKILL.md covers Route the request, Interpret results and Handle a missing CLI
- Calls npm
- Fetching the full source of a frameworks/base file at a release tag
What it does
The skill treats the `android-api-diff` CLI as the only tool interface and keeps its default JSON output. Requests are routed to five subcommands: `generate` for Java hidden-API access code, which runs the version query itself, `query` for signatures, version ranges, availability and reasons an API is missing, `resolve` for the matching `frameworks/base` file and target kind, `source` for the complete content of a known path at an exact Android release tag, and `preload` only when you explicitly ask to warm the cache. API names are always quoted because constructors and member references contain shell-sensitive characters.
Results count as successful only with exit code 0 and top-level `ok: true`, with the answer under `result`. Range endpoints are described as the first or last tag checked in the current snapshot, so a last-checked endpoint does not promise that no later revision exists. For members, the `overloads` list is the source of truth, and a missing reason of overload-not-found means the name exists but that exact parameter signature does not. On errors the agent reports the code and message from stderr without retrying. If the CLI is missing, the agent stops and tells you to install it with npm and run its skill install command from the project root.
When your agent uses it
- Finding which Android versions include a framework API
- Fetching the full source of a frameworks/base file at a release tag
- Explaining why an API is missing on a given Android version
- Generating Java code that reaches a hidden API
Example prompts
- “Resolve ContentObserver() to its frameworks/base source file.”
- “Which Android versions have IActivityManager.getTasks, with minimum SDK 28?”
- “Generate Java hidden-API access code for ActivityManager.getTasks.”
- “Show me the full AccessibilityButtonController source at android-17.0.0_r1.”
Requirements
- The `android-api-diff` CLI, installed with `npm install --global android-api-diff@latest`
- Network access for fetching framework sources
What it can do on your machine
Read from SKILL.md and the folder at commit daed366. 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
Shell commands in SKILL.md call:
npm
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npm, which can reach the network depending on how they are called.
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
Android API Diff loads about 796 tokens when it runs. Until then it costs about 99 tokens; SKILL.md has 340 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 gkd-kit/gkd at commit daed366, republished under its GPL-3.0 licence (© gkd-kit). 340 words, ~796 tokens.
Download SKILL.mdSave it as
.claude/skills/android-api-diff/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- android-api-diff
- description
- Inspect Android framework Java and AIDL APIs across versions with the android-api-diff CLI. Use when resolving an Android API to frameworks/base source, fetching the complete content of a tagged source file, comparing signatures or availability by Android version, explaining missing APIs, generating Java hidden-API access code, or explicitly prewarming the local query cache.
Android API Diff
Use the android-api-diff CLI as the only tool interface. Keep its default JSON
output so results remain machine-readable.
Route the request
- Run
generatewhen the user wants Java hidden-API access code. It performs the version query internally, so never callqueryfirst. - Run
querywhen the user wants signatures, version ranges, availability, missing reasons, or source metadata. - Run
resolvewhen the user only needs the matchingframeworks/basefile and target kind. - Run
sourcewhen the user wants the complete content of a known source path at an exact Android release tag. If only an API name is known, runresolvefirst and use itssource.path. - Run
preloadonly when the user explicitly asks to preload several APIs.
Always quote API names because constructors and member references can contain shell-sensitive characters.
android-api-diff resolve "ContentObserver()"
android-api-diff source android-17.0.0_r1 core/java/android/accessibilityservice/AccessibilityButtonController.java
android-api-diff query "IActivityManager.getTasks" --min-sdk 28
android-api-diff generate "ActivityThread.currentApplication" --min-sdk 28
android-api-diff preload "ContentObserver()" "IActivityManager.getTasks" --min-sdk 28Omit --min-sdk unless the user provides a minimum Android API level. The CLI
then uses its built-in default.
Interpret results
Treat exit code 0 together with top-level ok: true as success. Read the
operation result from the top-level result field.
For query, describe range endpoints as the first or last tag checked in the
current snapshot. A last-checked endpoint is not a promise that no later
revision exists.
For member queries, treat result.overloads as the source of truth. Each item
has a stable overloadId, its latest checked signature and member, and
independent ranges. A range with missingReason: "overload-not-found" means
the member name exists in that source revision but that specific parameter
signature does not. Use top-level result.ranges[].overloadIds only when
describing which overloads were available together.
On a nonzero exit code, read the structured JSON error from stderr and report its
error.code and error.message. Do not add an automatic retry: the CLI network
layer already retries transient fetches.
Handle a missing CLI
If android-api-diff is not installed, stop and tell the user to run:
npm install --global android-api-diff@latest
android-api-diff skill installRun the Skill command from the root of the current Git or Gradle project so it remains project-scoped. Do not implement or simulate version checks. The package manager owns CLI update detection and upgrades.
© gkd-kit, 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 1 other file in .agents/skills/android-api-diff of gkd-kit/gkd.
- SKILL.md
- agents/openai.yaml
Open the folder on GitHubat commit daed366
Compare with similar skills
Android API Diff 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 |
|---|---|---|---|---|---|---|
| Android API Diff this skillgkd-kit/gkd | 43k | — | ~796 | Automated safety check: Pass | GPL-3.0 | |
| Android Audio E2Ehyochan/react-native-nitro-sound | 961 | — | ~814 | Automated safety check: Pass | MIT | |
| Install Firecrasherosama-raddad/FireCrasher | 147 | — | ~562 | Automated safety check: Pass | Apache-2.0 | |
| Apc BuildJoker-x-dev/AndroidProject-Compose | 102 | — | ~553 | Automated safety check: Pass | None | |
| Sentry Android SDKgetsentry/sentry-for-ai | 268 | — | ~7.7k | Automated safety check: Pass | Apache-2.0 | |
| Dt Setup AndroidDynatrace/dynatrace-for-ai | 161 | — | ~3.5k | Automated safety check: Pass | Apache-2.0 |
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Questions about Android API Diff
What does Android API Diff do?
Looks up Android framework Java and AIDL APIs across versions with the android-api-diff CLI: signatures, availability, source files and hidden-API access code. The skill treats the `android-api-diff` CLI as the only tool interface and keeps its default JSON output. Requests are routed to five subcommands: `generate` for Java hidden-API access code, which runs the version query itself, `query` for signatures, version ranges, availability and reasons an API is missing, `resolve` for the matching `frameworks/base` file and target kind, `source` for the complete content of a known path at an exact Android release tag, and `preload` only when you explicitly ask to warm the cache.
When should I use Android API Diff?
Android API Diff fits situations like: finding which Android versions include a framework API; fetching the full source of a frameworks/base file at a release tag; explaining why an API is missing on a given Android version; generating Java code that reaches a hidden API.
How do I install Android API Diff in Claude Code?
Run `npx skills add gkd-kit/gkd --skill android-api-diff -a claude-code`. Or copy the skill folder (.agents/skills/android-api-diff in gkd-kit/gkd) into .claude/skills/android-api-diff in your project. Claude Code loads it when a task matches its description.
How do I install Android API Diff in Codex?
Run `npx skills add gkd-kit/gkd --skill android-api-diff -a codex`. Or copy the skill folder (.agents/skills/android-api-diff in gkd-kit/gkd) into .agents/skills/android-api-diff in your project. Codex loads it when a task matches its description.
Can I use Android API Diff 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 gkd-kit/gkd --skill android-api-diff -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/android-api-diff, .gemini/skills/android-api-diff, .github/skills/android-api-diff and .opencode/skills/android-api-diff in your project.
What does Android API Diff need to run?
Going by SKILL.md and its folder, Android API Diff needs the command-line tools its instructions call (npm). Our summary lists: The `android-api-diff` CLI, installed with `npm install --global android-api-diff@latest`; Network access for fetching framework sources.
Does Android API Diff access the network?
SKILL.md contains no URLs. Its commands use npm, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Android API Diff 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 Android API Diff use?
Android API Diff 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 Android API Diff use?
About 796 tokens (SKILL.md is roughly 3.2k 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 Android API Diff?
Skills that share tags, products or a category with Android API Diff: Android Audio E2E (hyochan/react-native-nitro-sound, 961 stars), Install Firecrasher (osama-raddad/FireCrasher, 147 stars), Apc Build (Joker-x-dev/AndroidProject-Compose, 102 stars) and Sentry Android SDK (getsentry/sentry-for-ai, 268 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Android API Diff?
gkd-kit (a GitHub organization) maintains it in gkd-kit/gkd, which has 42,544 GitHub stars. The repository holds 2 skills in this directory. The repository was last updated on October 6, 2026.
Source: gkd-kit/gkd on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.