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 rules/truefoundry/trueforge/trueforge-ui-slotsgit clone --depth 1 https://github.com/truefoundry/trueforgeWhat 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 | $0.00000 | $0.00323 |
| Opus 5 | $0.00000 | $0.00161 |
| Sonnet 5 | $0.00000 | $0.00065 |
| Haiku 4.5 | $0.00000 | $0.00032 |
Grade A, and why
trueforge-ui-slots 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 today.
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.
What it actually 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
- Export the component and augment
AtomSlotsin the same file:
declare module '../theme/SlotsProvider.js' {
interface AtomSlots {
MyComponent: typeof MyComponent;
}
}
- Register the default in
src/theme/defaultSlots.ts. - Parents render it via
useSlot('MyComponent'), never a direct import of the default implementation (except insidedefaultSlots.ts). - Keep the public prop surface stable so hosts can swap the implementation.
Examples
// ❌ 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 rule when exposed as named atoms; internal helpers with no JSX need no slot.
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.
- today First seen · 44 lines · 0 tokens per session scan A 053d71fb244f
trueforge-ui-slots is a cursor rule published in the GitHub repository truefoundry/trueforge (5,040 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 323 tokens. 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 2026-09-02.
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