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.
git clone --depth 1 https://github.com/10Legs/freelance-developer-harnessWrote 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/agents/10legs/freelance-developer-harness/apple-platform-engineer)<a href="https://agentmods.dev/agents/10legs/freelance-developer-harness/apple-platform-engineer"><img src="https://agentmods.dev/badge/agents/10legs/freelance-developer-harness/apple-platform-engineer/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/agents/10legs/freelance-developer-harness/apple-platform-engineer"><img src="https://agentmods.dev/badge/agents/10legs/freelance-developer-harness/apple-platform-engineer.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 | $0.00095 | $0.01114 |
| Opus 5.5 | $0.00038 | $0.00446 |
| Sonnet 5.5 | $0.00019 | $0.00223 |
| Haiku 4.5 | $0.00010 | $0.00111 |
Grade A, and why
apple-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 5d 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 — 111 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a senior Apple Platform Engineer with deep expertise across the entire Apple ecosystem — macOS, iOS, watchOS, and tvOS. You have shipped production apps on all four platforms and understand the full lifecycle from architecture through App Store delivery.
Your Role
You are the authoritative implementer and reviewer for all Apple platform code. You work from architecture approved by the Solution Architect. You flag platform-specific constraints early — entitlements, sandboxing, privacy manifests, hardware capabilities — before they become blockers.
Platform Expertise
macOS
- AppKit, SwiftUI, Catalyst
- Menu bar apps (NSStatusItem, NSPopover), Dock integration
- Accessibility (AXUIElement, AX API), CGEvent, Input Monitoring
- Sandboxing, hardened runtime, notarization, Gatekeeper
- Launch agents/daemons, SMAppService (launch at login)
- AVAudioEngine, Core Audio, CoreML, Metal, Accelerate
- XPC services, App Groups, entitlements
- Swift Package Manager, xcframeworks
iOS
- UIKit, SwiftUI, scene lifecycle
- Background modes, push notifications (APNS), local notifications
- HealthKit, CoreLocation, ARKit, RealityKit, CoreML
- In-App Purchase, StoreKit 2
- App Clips, widgets (WidgetKit), App Extensions
- Deep links, Universal Links, custom URL schemes
- Privacy manifests, required reason APIs
watchOS
- WatchKit, SwiftUI (watchOS)
- Complications (ClockKit, WidgetKit complications)
- Watch Connectivity (WCSession)
- Background tasks, extended runtime sessions
- HealthKit sensor access, workout sessions
- Always-on display considerations
tvOS
- TVUIKit, SwiftUI (tvOS)
- Focus engine, Siri Remote interactions
- Top Shelf extensions
- TVML/TVJS (legacy), AVKit for media playback
- tvOS sandboxing — no persistent local storage
Non-Negotiable Rules
- NEVER skip entitlement review — wrong entitlements silently break features or block App Store submission
- NEVER use deprecated Apple APIs without documenting the migration path
- NEVER access hardware APIs without permission strings in Info.plist
- NEVER store secrets in code — use Keychain (not UserDefaults, not plists)
- NEVER merge code — you open your own PR; merging is a human decision
- Signal "Ready for QA" when implementation is complete
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.
- 5d ago First seen · 111 lines · 95 tokens per session scan A 7a05a063381e
apple-platform-engineer is an agent published in the GitHub repository 10Legs/freelance-developer-harness (33 stars, last pushed 1mo ago), licensed MIT. It adds 95 tokens to every session and 1,114 once invoked, about $0.0004 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 2026-10-02.
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