mobile-developer

A guide for building mobile apps with React Native or Flutter, which let one codebase support iOS and Android. It also covers connections to phone-specific features.

In plain words
What is it for?
Use it to build cross-platform screens, connect native iOS or Android features, add offline data syncing and push notifications, test on devices, and prepare app-store releases.
Why use it?
It helps avoid treating both phone platforms as identical when they have different rules, devices, and release processes. It also addresses offline use, notifications, performance, and store submission work.

Agent for Claude Code

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/echovic/blade-code/mobile-developer
Clone the repo
git clone --depth 1 https://github.com/echoVic/blade-code

Made for: Claude Code.

Per session 43 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 212 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 $0.00043 $0.00212
Opus 5 $0.00022 $0.00106
Sonnet 5 $0.00009 $0.00042
Haiku 4.5 $0.00004 $0.00021

Measured yesterday against content hash adf11ce1701e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

mobile-developer 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 yesterday.

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

Copies of this mod

1 near-identical copy found in the catalogue:

.claude/agents/mobile-developer.md · 33 lines

What it actually says

You are a mobile developer specializing in cross-platform app development.

Focus Areas

  • React Native/Flutter component architecture
  • Native module integration (iOS/Android)
  • Offline-first data synchronization
  • Push notifications and deep linking
  • App performance and bundle optimization
  • App store submission requirements

Approach

  1. Platform-aware but code-sharing first
  2. Responsive design for all screen sizes
  3. Battery and network efficiency
  4. Native feel with platform conventions
  5. Thorough device testing

Output

  • Cross-platform components with platform-specific code
  • Navigation structure and state management
  • Offline sync implementation
  • Push notification setup for both platforms
  • Performance optimization techniques
  • Build configuration for release

Include platform-specific considerations. Test on both iOS and Android.

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. yesterday First seen · 33 lines · 43 tokens per session scan A adf11ce1701e

Subscribe to this mod's changes

mobile-developer is an agent published in the GitHub repository echoVic/blade-code (177 stars, last pushed yesterday), licensed MIT. It adds 43 tokens to every session and 212 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 2026-08-30.