Borrowing it
Nothing to install: this file belongs to hmlongco/Navigator. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/hmlongco/Navigator/main/CLAUDE.mdgit clone --depth 1 https://github.com/hmlongco/NavigatorWrote 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.
[](https://agentmods.dev/instructions/hmlongco/navigator/claude-md)<a href="https://agentmods.dev/instructions/hmlongco/navigator/claude-md"><img src="https://agentmods.dev/badge/instructions/hmlongco/navigator/claude-md/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.
<a href="https://agentmods.dev/instructions/hmlongco/navigator/claude-md"><img src="https://agentmods.dev/badge/instructions/hmlongco/navigator/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00635 | $0.00635 |
| Opus 5 | $0.00318 | $0.00318 |
| Sonnet 5 | $0.00127 | $0.00127 |
| Haiku 4.5 | $0.00064 | $0.00064 |
Grade A, and why
Navigator CLAUDE.md 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 10d 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.
How it starts
The opening of the file, as written. The whole thing — 47 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Navigator is a SwiftUI navigation framework built on NavigationStack. It eliminates manual navigationDestination registrations and supports deep linking, checkpoints, and modular app patterns.
Platforms: iOS 17+, macOS 14+, tvOS 17+, watchOS 10+, visionOS 1+
Swift: 6.2, strict concurrency, @MainActor isolation throughout
Core pattern
Navigation is driven by enums conforming to NavigationDestination (Hashable + View). Each enum case is a screen; associated values pass parameters. The enum's body returns the view for each case — no per-destination registration needed.
ManagedNavigationStack replaces NavigationStack. It creates a Navigator, injects it into the SwiftUI environment, and registers a single AnyNavigationDestination handler so any destination type can be pushed without extra setup. Access the navigator with @Environment(\.navigator) var navigator.
Navigator (@Observable, @MainActor) manages the navigation path, sheet/cover presentations, checkpoints, locks, and the parent–child hierarchy that mirrors the presentation tree.
Key patterns
- NavigationMethod — how a destination is presented:
.push,.sheet,.managedSheet,.cover,.managedCover,.send - Checkpoints — named return points; any view can return to a named place without knowing the stack structure; support typed value returns
- Deep linking via send/receive —
navigator.send(values:)broadcastsHashablevalues; views subscribe with.onNavigationReceive; routes abstract multi-step sequences behind a singleperform(route:)call - Modular destinations —
NavigationProvidedDestinationlets a module declare destinations without knowing the view implementations; the app root registers providers via.onNavigationProvidedView - Dismissible tree —
ManagedPresentationView/.managedPresentationView()registers custom sheets with Navigator sodismissAny()and checkpoints can traverse the full presentation tree
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.
- 10d ago First seen · 47 lines · 635 tokens per session scan A 8c2fd69076fe
Navigator CLAUDE.md is an instructions file published in the GitHub repository hmlongco/Navigator (540 stars, last pushed 12d ago), licensed MIT. It adds 635 tokens to every session, about $0.0032 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.
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