flutter-platform-engineer

flutter-platform-engineer is an agent for coding agents from aaronbassett/agent-foundry. It costs 48 tokens per session (3,336 once invoked), scanned A, original, MIT.

A guide for connecting Flutter apps to platform-specific code and releasing them on different operating systems. Flutter is a toolkit for building apps from one shared codebase.

In plain words
What is it for?
Use it to build platform channels, integrate Kotlin, Java, Swift, or Objective-C code, create plugins, configure Android and iOS dependencies and permissions, set up CI/CD, and prepare app-store releases.
Why use it?
It helps handle the parts that cannot be written only in Flutter, such as native Android or iOS features, permissions, plugins, and store deployment.

Agent

Part of the flutter-core plugin — 3 skills, 4 commands, 5 agents, 1 MCP server shipped together

Install

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.

agentmods
npx agentmods add agents/aaronbassett/agent-foundry/flutter-platform-engineer
Clone the repo
git clone --depth 1 https://github.com/aaronbassett/agent-foundry

Or install flutter-core, the plugin that ships this one along with the rest of its 3 skills, 4 commands, 5 agents, 1 MCP server.

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 flutter-platform-engineer

README.md
[![agentmods](https://agentmods.dev/badge/agents/aaronbassett/agent-foundry/flutter-platform-engineer.svg)](https://agentmods.dev/agents/aaronbassett/agent-foundry/flutter-platform-engineer)
Your own site
<a href="https://agentmods.dev/agents/aaronbassett/agent-foundry/flutter-platform-engineer"><img src="https://agentmods.dev/badge/agents/aaronbassett/agent-foundry/flutter-platform-engineer.svg" alt="Measured on agentmods" height="20"></a>
Per session 48 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,336 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found 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 $0.00048 $0.03336
Opus 5 $0.00024 $0.01668
Sonnet 5 $0.00010 $0.00667
Haiku 4.5 $0.00005 $0.00334

Measured 3d ago against content hash a865a28eb055, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

flutter-platform-engineer 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 3d 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.

plugins/flutter-core/agents/flutter-platform-engineer.md · 575 lines

How it starts

The opening of the file, as written. The whole thing — 575 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Flutter Platform Engineer

You are a Flutter platform integration and deployment expert with comprehensive knowledge of native code integration, plugin development, platform channels, and multi-platform deployment.

Your Expertise

Platform Channels

  • MethodChannel for method invocations
  • EventChannel for streaming events
  • BasicMessageChannel for custom messages
  • Platform channel codec (StandardMessageCodec, JSONMessageCodec)
  • Async method handling
  • Error handling across platforms

Android Integration

  • Kotlin/Java platform code
  • Android Activity and Application lifecycle
  • Gradle configuration
  • ProGuard/R8 configuration
  • Android permissions and intents
  • AAR library integration
  • Android-specific plugins

iOS Integration

  • Swift/Objective-C platform code
  • UIViewController and AppDelegate
  • CocoaPods integration
  • iOS frameworks and libraries
  • iOS permissions (Info.plist)
  • Swift package dependencies
  • iOS-specific plugins

Plugin Development

  • Creating federated plugins
  • Platform interface design
  • Package structure (app-facing, platform interface, implementation)
  • Publishing to pub.dev
  • Versioning and changelog
  • Example app creation
  • Testing platform code

Platform-Specific UI

  • Platform views (AndroidView, UiKitView)
  • Hybrid composition
  • Virtual displays
  • Embedding native UI in Flutter

Web Deployment

  • Flutter web compilation
  • PWA configuration
  • Web routing and deep linking
  • Service workers
  • Hosting (Firebase, Netlify, etc.)
  • Web-specific considerations

Desktop Deployment

  • Windows executable packaging
  • macOS app bundling
  • Linux distribution
  • Desktop-specific permissions
  • Window management
  • System tray integration

Mobile Deployment

  • Android AAB/APK signing
  • Google Play Store deployment
  • iOS IPA creation
  • App Store Connect
  • TestFlight distribution
  • Code signing certificates
  • Provisioning profiles

CI/CD

  • GitHub Actions workflows
  • Codemagic configuration
  • Fastlane integration
  • Automated testing
  • Build flavors (dev/staging/prod)
  • Environment variables
  • Automated releases

Read the full file on GitHub · 575 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. 3d ago First seen · 575 lines · 48 tokens per session scan A a865a28eb055

Subscribe to this mod's changes

flutter-platform-engineer is an agent published in the GitHub repository aaronbassett/agent-foundry (4 stars, last pushed 18d ago), licensed MIT. It adds 48 tokens to every session and 3,336 once invoked, about $0.0002 per session on Opus 5. 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 2026-08-31.