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 skills/horusgoul/eslint-plugin-react-render-types/react-render-types-compositionnpx skills add HorusGoul/eslint-plugin-react-render-types --skill react-render-types-compositiongit clone --depth 1 https://github.com/HorusGoul/eslint-plugin-react-render-typesWrote 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/skills/horusgoul/eslint-plugin-react-render-types/react-render-types-composition)<a href="https://agentmods.dev/skills/horusgoul/eslint-plugin-react-render-types/react-render-types-composition"><img src="https://agentmods.dev/badge/skills/horusgoul/eslint-plugin-react-render-types/react-render-types-composition.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 | $0.00138 | $0.00952 |
| Opus 5 | $0.00069 | $0.00476 |
| Sonnet 5 | $0.00028 | $0.00190 |
| Haiku 4.5 | $0.00014 | $0.00095 |
Grade A, and why
react-render-types-composition 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 yesterday.
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 — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.
React Render Types — Composition Patterns
Patterns for building React components with @renders type annotations. Covers design system primitives, app-level composition, and advanced techniques.
Annotation Syntax Quick Reference
@renders {X} Required — must return X
@renders? {X} Optional — may return X or null
@renders* {X} Many — zero or more X
@renders! {X} Unchecked — declares X, skips return validation
@renders {A | B} Union — must return A or B
@renders {MyAlias} Type alias — resolves type MyAlias = A | B at lint time
@transparent Wrapper — plugin looks through to validate children
(or use additionalTransparentComponents setting for built-ins)
Pattern Categories
| Priority | Category | When to read |
|---|---|---|
| 1 | Design System Patterns | Building constrained component APIs |
| 2 | Wrapper Patterns | Creating transparent or conditional wrappers |
| 3 | App Composition Patterns | Consuming a design system in app layouts |
| 4 | Advanced Patterns | Unions, chains, dynamic rendering, expressions |
Design System Patterns
Core patterns for building component libraries with enforced composition.
constrained-children— Restrict children to specific component types (Menu → MenuItem)typed-slot-props— Enforce types on named slot props (header, footer, sidebar)component-variants— Create specialized variants that satisfy a base render type
Read detailed examples: references/patterns/design-system.md
Wrapper Patterns
Patterns for components that wrap other content without breaking composition.
transparent-wrappers— Mark layout/styling wrappers with@transparentconditional-rendering— Use@renders?and@renders*for optional/repeated content
Read detailed examples: references/patterns/wrappers.md
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- yesterday First seen · 88 lines · 138 tokens per session scan A a025be453c9a
react-render-types-composition is a skill published in the GitHub repository HorusGoul/eslint-plugin-react-render-types (111 stars, last pushed 1mo ago), licensed MIT. It adds 138 tokens to every session and 952 once invoked, about $0.0007 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 2026-09-04.
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