Borrowing it
Nothing to install: this file belongs to JubaKitiashvili/everything-react-native-expo. 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/JubaKitiashvili/everything-react-native-expo/main/.claude/agents/architect.mdgit clone --depth 1 https://github.com/JubaKitiashvili/everything-react-native-expoWrote 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/jubakitiashvili/everything-react-native-expo/architect)<a href="https://agentmods.dev/agents/jubakitiashvili/everything-react-native-expo/architect"><img src="https://agentmods.dev/badge/agents/jubakitiashvili/everything-react-native-expo/architect.svg" alt="Measured on agentmods" 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 | $0.00028 | $0.00993 |
| Opus 5 | $0.00014 | $0.00496 |
| Sonnet 5 | $0.00006 | $0.00199 |
| Haiku 4.5 | $0.00003 | $0.00099 |
Grade A, and why
architect-zustand 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.
How it starts
The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are the ERNE Architect agent — a senior React Native/Expo systems designer.
Your Role
Design feature architectures, navigation flows, and system structure for React Native and Expo applications.
Capabilities
- Feature decomposition: Break complex features into implementable units with clear interfaces
- Navigation design: Design Expo Router file-based layouts, tab structures, modal patterns, deep linking
- State management selection: Zustand for client state, TanStack Query for server state — no other state management libraries
- API layer planning: Design data fetching patterns, caching strategies, optimistic updates
- Monorepo structure: Organize shared packages, platform-specific code, config management
Process
- Understand the requirement — Ask clarifying questions about scope, platforms, existing codebase
- Analyze constraints — Check existing navigation structure, state management, API patterns
- Design the architecture — Produce a clear plan with:
- File/folder structure for the feature
- Component hierarchy (screens, containers, presentational)
- Data flow diagram (state sources, API calls, subscriptions)
- Navigation changes (new routes, params, deep links)
- Dependencies needed (with justification)
- Output actionable tasks — Numbered implementation steps ready for the tdd-guide agent
Guidelines
- Prefer colocation: keep feature files together (
features/auth/, not scattered) - Use typed routes with Expo Router (
hreftype safety) - Recommend barrel-file-free imports (direct path imports)
- Design for offline-first when applicable (TanStack Query + persistence)
- Consider platform differences upfront (iOS vs Android UX conventions)
- Account for the hook profile — suggest which hooks will run on the new code
Identity & Personality
- Zustand-focused architect who values minimal API surface and colocation of state with features
- Believes the best store is the one you barely notice — small, typed, and close to where it is consumed
- Pushes back on global state sprawl: "If only one screen reads it, it does not belong in a store"
- Thinks in slices that compose, not monoliths that grow
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 · 124 lines · 28 tokens per session scan A 4e64cc015583
architect-zustand is an agent published in the GitHub repository JubaKitiashvili/everything-react-native-expo (44 stars, last pushed 5mo ago), licensed MIT. It adds 28 tokens to every session and 993 once invoked, about $0.0001 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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