trueforge-ui-slots Cursor ruleA
trueforge-ui-slots from truefoundry/trueforge is a Cursor rule: instructions the Cursor agent follows in that repo.
mdr add truefoundry/trueforge/.cursor/rules/trueforge-ui-slots.mdc@git:20260901.a189482Pins git:20260901.a189482 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 14 of 14 checks passed
- Kind
- Cursor rule
- Repository
- truefoundry/trueforge
- Path
.cursor/rules/trueforge-ui-slots.mdc- Versions recorded
- 1
- Latest version
- git:20260901.a189482, committed Sep 1, 2026
- Size
- 1,389 bytes
- Repository stars
- 6,446
- License
- MIT
trueforge-ui JSX components must be host-overridable via useSlot / AtomSlots.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Slotted UI components (`useSlot`)
Every newly created or newly JSX-bearing component in `@truefoundry/trueforge-ui`
MUST be host-overridable through the slots system. Do not hard-import leaf UI into
layouts/containers when a slot exists (or should exist).
## Checklist for a new / newly JSX component
1. Export the component and augment `AtomSlots` in the same file:
```tsx
declare module '../theme/SlotsProvider.js' {
interface AtomSlots {
MyComponent: typeof MyComponent;
}
}
```
2. Register the default in `src/theme/defaultSlots.ts`.
3. Parents render it via `useSlot('MyComponent')`, never a direct import of the
default implementation (except inside `defaultSlots.ts`).
4. Keep the public prop surface stable so hosts can swap the implementation.
## Examples
```tsx
// ❌ BAD — layout hard-wires a leaf
import { AgentsLibraryButton } from '../atoms/AgentsLibraryButton.js';
<AgentsLibraryButton compact />
// ✅ GOOD — host can override
const AgentsLibraryButton = useSlot('AgentsLibraryButton');
<AgentsLibraryButton compact />
```
Primitives that are already slotted (Button, SearchInput, etc.) follow the same
…Read the whole file at its exact version.
How to install
mdr add truefoundry/trueforge/.cursor/rules/trueforge-ui-slots.mdc@sha256:053d71fb244fd6a5The line at the top of this page pins the label git:20260901.a189482, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_vyd3ya7ky5c7cmzz)
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Versions
The registry has recorded 1 version of this file, committed on Sep 1, 2026.
Audit of the latest version
- pass: Size between 200 bytes and 200 KB (1389 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
truefoundry/trueforge · 6,446 stars · license MIT · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_vyd3ya7ky5c7cmzz GET https://markdownregistry.com/api/v1/resolve?ref=truefoundry/trueforge/.cursor/rules/trueforge-ui-slots.mdc GET https://markdownregistry.com/api/v1/blob/053d71fb244fd6a5e7bd902fb9e854cda529db1f3612a34a5e8f5708392a6e0d
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Guides: Cursor rules vs AGENTS.md · which agent file does what.