Borrowing it
Nothing to install: this file belongs to wheregmis/threadlane. 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/wheregmis/threadlane/main/.agents/skills/gpui-kit/SKILL.mdgit clone --depth 1 https://github.com/wheregmis/threadlaneWrote 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/wheregmis/threadlane/gpui-kit)<a href="https://agentmods.dev/skills/wheregmis/threadlane/gpui-kit"><img src="https://agentmods.dev/badge/skills/wheregmis/threadlane/gpui-kit/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/wheregmis/threadlane/gpui-kit"><img src="https://agentmods.dev/badge/skills/wheregmis/threadlane/gpui-kit.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00180 | $0.04276 |
| Opus 5.5 | $0.00072 | $0.01710 |
| Sonnet 5.5 | $0.00036 | $0.00855 |
| Haiku 4.5 | $0.00018 | $0.00428 |
Grade A, and why
gpui-kit 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 2mo 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 — 255 lines — stays where its author put it; the contents beside it link to each section on GitHub.
GPUI Kit
Applications depend on one crate, gpui-kit. GPUI is use gpui_kit::*;, and
each layer is reachable by name: gpui_kit::component (styled components),
gpui_kit::base (unstyled behavior), gpui_kit::assets (default icons),
gpui_kit::platform.
Read the Guides First
Two guides hold the rules this skill assumes. They are requirements, not inspiration. Read the guide file itself; do not answer from this page, from a similar file in the codebase, or from training data.
| Guide | Read before |
|---|---|
Design Guides, skill gpui-kit-design-guides |
Choosing components, layout, spacing, hierarchy, color, density, interaction states, overlays, motion, interface copy |
| Coding Guides | Crate layering, RenderOnce vs Entity<T>, state ownership, ElementId, events, focus, async, public API, naming, testing |
Read the Design Guides first when the change has a visible surface: code
structure preserves product intent, it does not replace it. If the design
skill is not installed, fetch https://gpui-kit.com/docs/design-guides.md.
The coding guide is a verbatim copy of https://gpui-kit.com/docs/coding-guides.md,
so its links to ./design-guides.md and ./getting-started.md mean the design
skill and https://gpui-kit.com/docs/getting-started.md.
Coding Guides section map
Read the whole guide for a new crate, module, or feature. For a narrow change,
read "Architecture at a glance" and "Rules for coding agents" first, then the
section for the change (grep -n '^## ' references/coding-guides.md).
| Section | Read when |
|---|---|
| Architecture at a glance | Always; crate layering, ownership boundary |
| Bootstrap and root ownership | main, init, Root, window creation, app-level state |
| Understand GPUI's phases and contexts | Anything touching App, Window, Context<T>, render vs update |
| Choose the right unit | Deciding RenderOnce vs Entity<T> vs custom Element |
| State ownership | Where a piece of state lives, who mutates it, Entity<State> handles |
| Stable identity | ElementId, lists, repeated elements, keyed state |
| Rendering and composition | render, builder chains, when/map, child composition |
| Behavior and presentation boundary | gpui-base vs gpui-component vs application code |
| Theme and styling | cx.theme(), tokens, Styled, sizes, variants |
| Events, actions, and focus | cx.emit, subscribe, actions!, keybindings, FocusHandle |
| Async work and side effects | cx.spawn, background_spawn, Task, I/O, timers |
| Layout, measurement, and scrolling | Flex layout, sizing, overflow, scroll handles, measuring |
| Lists, tables, and large data | VirtualList, List, DataTable, delegates, large collections |
| Public API design | Anything pub: builders, private fields, setter and reader naming |
| Platform and capability boundaries | macOS/Windows/Linux/wasm differences, feature gates |
| File and naming conventions | New files, modules, type and method names, Kind suffix, Context |
| Testing strategy | What to test, #[gpui_kit::test], TestAppContext |
| Performance rules | Render cost, allocation, re-render triggers |
| Common failure modes | Before finishing; invented APIs, state in render, index ids |
| Rules for coding agents | Always when an agent writes code |
| Implementation checklist | Before finishing; run every item against the work |
What ships with it
24 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.
- references/coding-guides.md 41 KB
- references/gpui/action.md 3.7 KB
- references/gpui/async.md 6.0 KB
- references/gpui/context.md 6.1 KB
- references/gpui/element-advanced.md 20 KB
- references/gpui/element-api.md 11 KB
- references/gpui/element-best-practices.md 13 KB
- references/gpui/element-examples.md 18 KB
- references/gpui/element-id.md 2.4 KB
- references/gpui/element-patterns.md 15 KB
- references/gpui/element.md 3.9 KB
- references/gpui/entity-advanced.md 13 KB
- references/gpui/entity-api.md 8.5 KB
- references/gpui/entity-best-practices.md 15 KB
- references/gpui/entity-patterns.md 13 KB
- references/gpui/entity.md 7.2 KB
- references/gpui/event.md 5.6 KB
- references/gpui/focus-handle.md 4.9 KB
- references/gpui/global.md 3.9 KB
- references/gpui/layout-style.md 6.3 KB
- references/gpui/test-examples.md 3.8 KB
- references/gpui/test-reference.md 13 KB
- references/gpui/test.md 2.7 KB
- references/usage.md 9.8 KB
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.
- 2mo ago First seen · 255 lines · 180 tokens per session scan A 88906868b217
gpui-kit is a skill published in the GitHub repository wheregmis/threadlane (24 stars, last pushed 2d ago), licensed MIT. It adds 180 tokens to every session and 4,276 once invoked, about $0.0007 per session on Opus 5.5. 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 2026-09-05.
gpui-kit compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| gpui-kitwheregmis/threadlane | Skill | 24 | 2d ago | MIT | A | 180 | Claude Code, Codex |
| rust-patternsaffaan-m/ECC | Skill | 298k | 4d ago | MIT | A | 28 | Claude Code, Kiro |
| update-v8-versionopeninterpreter/openinterpreter | Skill | 69k | 3d ago | Apache-2.0 | A | 86 | Codex |
| dd-code-generationDataDog/pup | Skill | 1.0k | yesterday | Apache-2.0 | A | 16 | Claude Code |
| omh-rustrlaope/oh-my-hermes | Skill | 5.2k | yesterday | MIT | A | 74 | Claude Code, Codex |
| swiftidebosun-ai/swiftide | Skill | 802 | yesterday | MIT | A | 47 | Claude Code, Codex |
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