flutter-platform-integration

Guidance for Flutter work that connects Dart code with native iOS or Android features. Flutter is a framework for building mobile apps, while native code is code specific to a phone platform.

In plain words
What is it for?
Use it for platform channels, plugins, permissions, app flavors, environment settings, deep links, push notifications, background tasks, lifecycle behavior, and native project files.
Why use it?
It helps manage the parts of an app that differ between iOS and Android, such as permissions, notifications, deep links, background work, and secure storage. It also requires these changes to be checked against the project’s approved design and configuration.

Skill for Claude CodeCodex

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 skills/evolplus/talos/flutter-platform-integration
Any agent
npx skills add evolplus/talos --skill flutter-platform-integration
Clone the repo
git clone --depth 1 https://github.com/evolplus/talos

Made for: Claude Code, Codex.

Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 761 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 $0.00057 $0.00761
Opus 5 $0.00028 $0.00380
Sonnet 5 $0.00011 $0.00152
Haiku 4.5 $0.00006 $0.00076

Measured 2d ago against content hash 22f78abe6e5f, 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-integration 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 2d 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.

skills/flutter-platform-integration/SKILL.md · 61 lines

How it starts

The opening of the file, as written. The whole thing — 61 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Flutter Platform Integration

When to use

Use this for Flutter work that crosses the Dart/native boundary: platform channels, plugins, permissions, flavors, app config, deep links, push notifications, background tasks, secure storage, lifecycle hooks, or iOS/Android-specific behavior. Load it alongside flutter-implementation.

Inputs and outputs

  • Inputs: SRS/architecture permission and platform requirements, API contracts, env configuration, existing Flutter plugin/channel setup, iOS/Android project files, current flavor/build configuration.
  • Outputs: platform changes that are approved by architecture, configured per environment, covered by smoke/build checks, and documented in task notes or deploy reports when QA/DevOps needs them.

Procedure

  1. Classify the integration:
    • package/plugin only;
    • MethodChannel/EventChannel/FFI/custom native code;
    • flavor/build-config change;
    • permission/deep-link/push/background lifecycle change.
  2. Check authorization before changing platform capabilities:
    • new plugins, permissions, background modes, associated domains, push services, and native APIs require architecture/dependency approval;
    • if the requirement is absent, halt with an OQ instead of silently adding capability.
  3. Implement environment-safe config:
    • use SRS §3.4.6 keys and the existing config loader;
    • pass non-secret values through the established --dart-define, flavor file, or build-time config path;
    • keep dev/staging/prod endpoints out of Dart and native source literals.
  4. Keep permission UX complete:
    • update iOS usage descriptions and Android permission declarations;
    • provide user-facing rationale/copy where required by the feature;
    • handle denied, restricted, unavailable, and recoverable states in UI.
  5. Isolate platform differences:
    • wrap platform calls behind services/repositories;
    • keep widgets independent of channel names and native file paths;
    • use typed DTOs for channel payloads and document nullable/error cases.
  6. Verify platform behavior:
    • run at least one affected platform build/check when native files, plugins, flavors, or permissions change;
    • test deep links, push/open flows, storage migration, channel error handling, or lifecycle paths on the relevant simulator/emulator/device;
    • record any platform that could not be checked.

Read the full file on GitHub · 61 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 2d ago First seen · 61 lines · 57 tokens per session scan A 22f78abe6e5f

Subscribe to this mod's changes

flutter-platform-integration is a skill published in the GitHub repository evolplus/talos (8 stars, last pushed 28d ago), licensed Apache-2.0. It adds 57 tokens to every session and 761 once invoked, about $0.0003 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.

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