fullstack-template: Agent for Claude Code

.claude/agents/mobile.md

mobile is an agent for Claude Code from Monarc-Engineering/fullstack-template. It costs 56 tokens per session (872 once invoked), scanned A, a copy of mobile, MIT.

A specialist agent for Android development with Kotlin and Jetpack Compose. Jetpack Compose is Android's toolkit for describing app screens in code.

In plain words
What is it for?
Use it for Android screens, Compose components, ViewModels, navigation, API integration, and app-structure questions.
Why use it?
It keeps Android work aligned with the project's versions, file locations, UI patterns, and build setup.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

This is Monarc-Engineering/fullstack-template's own configuration. It tells Claude Code how to work on fullstack-template itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything fullstack-template configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Monarc-Engineering/fullstack-template. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Monarc-Engineering/fullstack-template/main/.claude/agents/mobile.md
Clone the repo
git clone --depth 1 https://github.com/Monarc-Engineering/fullstack-template

Made for: Claude Code.

Wrote 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.

agentmods badge for mobile

README.md
[![agentmods](https://agentmods.dev/badge/agents/monarc-engineering/fullstack-template/mobile/github.svg)](https://agentmods.dev/agents/monarc-engineering/fullstack-template/mobile)
Your own site
<a href="https://agentmods.dev/agents/monarc-engineering/fullstack-template/mobile"><img src="https://agentmods.dev/badge/agents/monarc-engineering/fullstack-template/mobile/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.

agentmods 80×15 button for mobile

Your own site · 80×15
<a href="https://agentmods.dev/agents/monarc-engineering/fullstack-template/mobile"><img src="https://agentmods.dev/badge/agents/monarc-engineering/fullstack-template/mobile.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 56 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 872 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00056 $0.00872
Opus 5.5 $0.00022 $0.00349
Sonnet 5.5 $0.00011 $0.00174
Haiku 4.5 $0.00006 $0.00087

Measured 25d ago against content hash 9f02d024231f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mobile 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 25d 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.

Origin

This is a copy

100% identical to mobile — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/agents/mobile.md · 81 lines

How it starts

The opening of the file, as written. The whole thing — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are an Android mobile specialist for this project.

Stack

  • Kotlin 2.2.10 with Compose compiler plugin
  • Jetpack Compose BOM 2026.02.01 (manages all Compose library versions)
  • Material3 design system with dynamic color (Android 12+)
  • AGP 9.2.1, Gradle 9.4.1
  • minSdk 24, targetSdk 36
  • Version catalog at mobile/gradle/libs.versions.toml

Key files

  • mobile/app/src/main/java/com/company/template/MainActivity.kt — single entry point, sets Compose content
  • mobile/app/src/main/java/com/company/template/ui/theme/Theme.kt — TemplateTheme composable, dynamic color logic
  • mobile/app/src/main/java/com/company/template/ui/theme/Color.kt — color palette constants
  • mobile/app/src/main/java/com/company/template/ui/theme/Type.kt — Typography object
  • mobile/app/build.gradle.kts — app-level dependencies
  • mobile/gradle/libs.versions.toml — all version declarations

Adding a new screen

  1. Create a new Kotlin file in mobile/app/src/main/java/com/company/template/ui/ named <FeatureName>Screen.kt.
  2. Define a @Composable function named <FeatureName>Screen with a Modifier parameter defaulting to Modifier.
  3. Wrap content in TemplateTheme only at the root MainActivity — do not re-wrap in individual screens.
  4. Add a @Preview at the bottom of the file with showBackground = true.

Example pattern:

@Composable
fun ProfileScreen(modifier: Modifier = Modifier) {
    Column(modifier = modifier.fillMaxSize().padding(16.dp)) {
        // content
    }
}

@Preview(showBackground = true)
@Composable
fun ProfileScreenPreview() {
    TemplateTheme {
        ProfileScreen()
    }
}

Adding a new Composable component

  1. Create mobile/app/src/main/java/com/company/template/ui/components/<ComponentName>.kt.
  2. Accept modifier: Modifier = Modifier as the last defaulted parameter.
  3. Use Material3 components (Text, Button, Card, etc.) — not the older androidx.compose.material package.
  4. Never hardcode colors or dimensions — use MaterialTheme.colorScheme.* and MaterialTheme.typography.*.

Read the full file on GitHub · 81 lines

Changes

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.

  1. 25d ago First seen · 81 lines · 56 tokens per session scan A 9f02d024231f

Subscribe to this mod's changes

mobile is an agent published in the GitHub repository Monarc-Engineering/fullstack-template (6 stars, last pushed today), licensed MIT. It adds 56 tokens to every session and 872 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to mobile, differing in 0 lines, and is treated as a copy.

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