Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/kensaurus/cursor-kenjiWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/rules/kensaurus/cursor-kenji/native-android)<a href="https://agentmods.dev/rules/kensaurus/cursor-kenji/native-android"><img src="https://agentmods.dev/badge/rules/kensaurus/cursor-kenji/native-android/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/rules/kensaurus/cursor-kenji/native-android"><img src="https://agentmods.dev/badge/rules/kensaurus/cursor-kenji/native-android.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00000 | $0.00633 |
| Opus 5.5 | $0.00000 | $0.00253 |
| Sonnet 5.5 | $0.00000 | $0.00127 |
| Haiku 4.5 | $0.00000 | $0.00063 |
Grade A, and why
native-android scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Native Android
Stack: Kotlin first, Java only when required by RN bridge or
legacy code.
Build: Gradle (Kotlin DSL where present).
Min SDK / target SDK / compile SDK: read android/build.gradle;
change them only on explicit instruction — they cascade through AGP,
Gradle, and every native dependency.
Adjust
android/to your repo's actual path (e.g.apps/mobile/android/).
Conventions
- Package matches what's already declared in
AndroidManifest.xmlandbuild.gradlenamespace. - Native modules for RN go under
android/app/src/main/java/<package>/modules/. - Each native module = one
*Module.kt(extendsReactContextBaseJavaModule) + one*Package.kt. - Register packages in
MainApplication.ktunless RN autolinking already picks them up. - Async: Coroutines + Flow (
AsyncTaskis deprecated since API 30; a rawThreadhas no lifecycle scope). RxJava only if the project already uses it. - Logging:
android.util.Logwith tag = class name. Wrap verbose logs inBuildConfig.DEBUGchecks. - Strings:
android/app/src/main/res/values/strings.xml. No hardcoded user-facing text. - Permissions: declare in
AndroidManifest.xmlAND request at runtime for dangerous permissions (camera, mic, location, storage on older API levels, notifications on API 33+). - Compose (if used): follow
MaterialThemetokens, no rawColor()literals in screen code.
Build verification (after any change)
Run /android-build or directly:
cd android && ./gradlew :app:assembleDebug --console=plain
The change is verified only on BUILD SUCCESSFUL; on BUILD FAILED
the first error is usually the root cause and later ones cascade.
If you hit OutOfMemoryError or metaspace errors, add to
android/gradle.properties:
org.gradle.jvmargs=-Xmx4g -XX:MaxMetaspaceSize=512m
org.gradle.daemon=true
org.gradle.parallel=true
org.gradle.caching=true
Boundaries
- Do not add a new native module if the JS-side library can do it.
- Do not edit
MainActivity.ktReactRootView wiring without explicit instruction. - Do not bump
compileSdk,targetSdk, AGP, or Gradle wrapper versions casually — these cascade. - Do not commit
local.properties,*.keystore, orgoogle-services.jsonif it's gitignored. - Do not edit auto-generated files under
android/app/build/.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago Changed · +2 lines cd1efd730d17
- 1mo ago First seen · 71 lines · 0 tokens per session scan A 1222eff59c70
native-android is a cursor rule published in the GitHub repository kensaurus/cursor-kenji (9 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 633 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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