What is mobile-navigation?

A guide to moving between mobile screens, tabs, and deep links. A deep link is a link that opens a particular screen directly, while a navigation stack records where the user has been.

Use it when adding screens, tabs, deep links, login transitions, or back-button and swipe-back handling in Flutter, SwiftUI, or Compose apps.

It helps avoid stale back histories, incorrect deep-link destinations, lost tab state, and user data leaking across an authentication boundary.

mobile-navigation — Skill for Claude Code and Codex by makifbaysal

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.

Any agent

npx skills add makifbaysal/tasktrooper --skill mobile-navigation

Clone the repo

git clone --depth 1 https://github.com/makifbaysal/tasktrooper

Made for: Claude Code, Codex.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/makifbaysal/tasktrooper/mobile-navigation/github.svg)](https://agentmods.dev/skills/makifbaysal/tasktrooper/mobile-navigation)

Your own site

<a href="https://agentmods.dev/skills/makifbaysal/tasktrooper/mobile-navigation"><img src="https://agentmods.dev/badge/skills/makifbaysal/tasktrooper/mobile-navigation/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/makifbaysal/tasktrooper/mobile-navigation"><img src="https://agentmods.dev/badge/skills/makifbaysal/tasktrooper/mobile-navigation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 788 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 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.

Model	Per session	Once invoked
Fable 5.1	$0.00048	$0.00788
Opus 5.5	$0.00019	$0.00315
Sonnet 5.5	$0.00010	$0.00158
Haiku 4.5	$0.00005	$0.00079

Measured 8d ago against content hash e54a09383a09, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mobile-navigation 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 8d 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.

catalog/agents/mobile-developer/skills/mobile-navigation/SKILL.md · 54 lines

How it starts

The opening of the file, as written. The whole thing — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Overview

Navigation bugs rarely show up in a widget test — they show up as a stale back stack, a deep link that opens the wrong screen, or state from a previous session leaking past login. Use the platform's own navigation stack, not a hand-rolled one, and verify a deep link by actually following it, not by reading the routing table.

Per-stack APIs

Flutter: go_router (declarative routing — see flutter-setup-declarative-routing if the repo is adopting it) for stack + deep-link handling. PopScope, not the deprecated WillPopScope, to intercept back.
SwiftUI: NavigationStack(path:) + .navigationDestination(for:) for a programmatic, type-safe stack; the Tab API for top-level tab navigation.
Compose: Navigation 3 with type-safe routes; NavigationSuiteScaffold to switch a bottom nav bar to a nav rail at the ≥600dp breakpoint (see android-compose-patterns).

Rules

Pass IDs, not whole objects, through navigation params — the destination screen re-fetches or reads from the shared state/cache by ID. An object passed by reference goes stale the moment the source list refreshes.
Preserve per-tab state across tab switches (scroll position, in-progress form) unless the task says otherwise — switching tabs is not meant to reset a screen.
Reset navigation state intentionally at auth boundaries: after logout, clear every stack back to the entry point; after completing a flow (checkout, onboarding), pop back to where it makes sense to land, not back through the flow's own screens.
Stack navigators for drill-in flows, tab navigators for top-level sections. Don't nest navigators deeper than the user can reason about (three levels is usually the practical ceiling).
Don't hide the tab bar on push on iOS unless the task explicitly asks — losing the tab bar mid-flow disorients the user about where they are in the app.
Hardware/predictive back does what the visible back affordance does — never let them diverge (see android-compose-patterns's predictive-back section for why onBackPressed alone is no longer reliable at targetSdk 36).

Read the full file on GitHub · 54 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.

8d ago First seen · 54 lines · 48 tokens per session scan A e54a09383a09

Subscribe to this mod's changes

mobile-navigation is a skill published in the GitHub repository makifbaysal/tasktrooper (113 stars, last pushed yesterday), licensed Apache-2.0. It adds 48 tokens to every session and 788 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-10-05.