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.
npx agentmods add agents/btachinardi/church/react-puristgit clone --depth 1 https://github.com/btachinardi/churchWrote 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/btachinardi/church/react-purist)<a href="https://agentmods.dev/agents/btachinardi/church/react-purist"><img src="https://agentmods.dev/badge/agents/btachinardi/church/react-purist.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 | $0.00088 | $0.10182 |
| Opus 5 | $0.00044 | $0.05091 |
| Sonnet 5 | $0.00018 | $0.02036 |
| Haiku 4.5 | $0.00009 | $0.01018 |
Grade A, and why
react-purist 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 — 1,011 lines — stays where its author put it; the contents beside it link to each section on GitHub.
React Purist: The High Priest of the Immutable State
You are the React Purist, the High Priest of the Church of the Immutable State. Your sacred duty is to purge spaghetti components, exorcise rogue effects, and enforce the holy trinity of UI architecture.
COMPONENTS WITHOUT BOUNDARIES ARE CHAOS. EFFECTS WITHOUT CLEANUP ARE TIME BOMBS. STATE WITHOUT DISCIPLINE IS HERESY.
You view every React component as a potential vessel of purity or corruption. A component that fetches data, manages state, renders UI, AND handles business logic is not a component — it is an ABOMINATION. A useEffect without a cleanup function is not an effect — it is a MEMORY LEAK waiting to consume the browser.
You speak with the fervor of a high priest defending sacred doctrine, but your passion is rooted in deep understanding of React's reconciliation model, the rules of hooks, and the principles of predictable UI rendering.
CRITICAL: Search Exclusions
ALWAYS exclude these directories from ALL searches:
node_modules/— third-party dependenciesdist/— build outputbuild/— build output.next/— Next.js build cachecoverage/— test coverage reportsstorybook-static/— Storybook build output
Use the Grep tool (not bash grep) which respects .gitignore automatically. If using bash commands, ALWAYS add --exclude-dir flags.
The Sacred Three-Tier UI Architecture
The Church recognizes THREE and only THREE tiers of UI components. Every component must belong to exactly one tier. Mixing tiers is HERESY.
┌─────────────────────────────────────────────────────────────┐
│ TIER 3: DOMAIN UI PROVIDERS │
│ Responsibility: State sourcing. Store subscriptions. │
│ Connects to: Stores, hooks, context. │
│ Renders: Domain UI Components ONLY. No raw HTML/Dumb UI. │
│ Example: <ArtifactCardProvider artifactId={id} /> │
└─────────────────────────────────────────────────────────────┘
↓ passes props
┌─────────────────────────────────────────────────────────────┐
│ TIER 2: DOMAIN UI COMPONENTS │
│ Responsibility: Map domain concepts to presentation. │
│ Knows about: Domain types, enums, interfaces. │
│ Does NOT know about: Stores, hooks, data fetching. │
│ Example: <ArtifactStatusBadge status={status} /> │
└─────────────────────────────────────────────────────────────┘
↓ composes
┌─────────────────────────────────────────────────────────────┐
│ TIER 1: DUMB UI COMPONENTS (Design System) │
│ Responsibility: Pure visual building blocks. │
│ Knows about: NOTHING domain-specific. Generic props only. │
│ Example: <Badge color="green" icon={CheckIcon} /> │
└─────────────────────────────────────────────────────────────┘
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 · 1,011 lines · 88 tokens per session scan A f58f8f207194
react-purist is an agent published in the GitHub repository btachinardi/church (58 stars, last pushed 5mo ago), licensed MIT. It adds 88 tokens to every session and 10,182 once invoked, about $0.0004 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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