Ghost: Skill for Claude Code

.agents/skills/shade-dropdown-surface-contract/SKILL.md

Shade dropdown surface contract is a skill for Claude Code, Codex from TryGhost/Ghost. It costs 54 tokens per session (968 once invoked), scanned A, original, MIT.

A shared visual rule for Shade’s DropdownMenu, Select, and Popover components, which are floating menus opened above another interface surface. It defines the background, border, and shadow recipe they should all use.

In plain words
What is it for?
Use it when changing any of these three components so their surfaces, borders, and shadows are updated together.
Why use it?
It keeps related menus visually consistent and prevents one floating component from looking flatter or deeper than the others, especially across light and dark themes.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is TryGhost/Ghost's own configuration. It tells Claude Code and Codex how to work on Ghost itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Ghost configures →

About the project

Ghost is a publishing platform for creating websites, blogs, memberships, subscriptions, and newsletters. Publishers and developers can use it through managed hosting or run it themselves, while contributors work on its monorepo, themes, and API.

TryGhost/Ghost · 55,632 stars · on GitHub · ghost.org

Reuse

Borrowing it

Nothing to install: this file belongs to TryGhost/Ghost. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/TryGhost/Ghost/main/.agents/skills/shade-dropdown-surface-contract/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/TryGhost/Ghost

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for Shade dropdown surface contract

README.md
[![agentmods](https://agentmods.dev/badge/skills/tryghost/ghost/shade-dropdown-surface-contract/github.svg)](https://agentmods.dev/skills/tryghost/ghost/shade-dropdown-surface-contract)
Your own site
<a href="https://agentmods.dev/skills/tryghost/ghost/shade-dropdown-surface-contract"><img src="https://agentmods.dev/badge/skills/tryghost/ghost/shade-dropdown-surface-contract/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.

agentmods 80×15 button for Shade dropdown surface contract

Your own site · 80×15
<a href="https://agentmods.dev/skills/tryghost/ghost/shade-dropdown-surface-contract"><img src="https://agentmods.dev/badge/skills/tryghost/ghost/shade-dropdown-surface-contract.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 968 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 5 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Prompt Injection · line 28
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
  • medium Prompt Injection · line 30
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
  • medium Prompt Injection · line 31
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
  • medium Prompt Injection · line 33
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
  • medium Prompt Injection · line 34
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00054 $0.00968
Opus 5.5 $0.00022 $0.00387
Sonnet 5.5 $0.00011 $0.00194
Haiku 4.5 $0.00005 $0.00097

Measured 2d ago against content hash a1a9a541cbf9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Shade dropdown surface contract 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 2d 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.

.agents/skills/shade-dropdown-surface-contract/SKILL.md · 77 lines

How it starts

The opening of the file, as written. The whole thing — 77 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Shade — dropdown surface contract

DropdownMenu, Select, and Popover are the three Radix-backed floating menus that Filters and the rest of admin use. They share one visual recipe:

bg-surface-elevated-2
border border-border/60 dark:border-border/30
shadow-md

Treat them as one component for any surface decision. If you change the surface for one, change all three.

Why this exists

Floating menus open ON TOP of an already-elevated surface (sidebars, cards, top bars). They need to read as floating above their trigger. --surface-elevated-2 is reserved for exactly this — popovers, dropdown content, and the sidebar user menu.

In light mode the three surface tokens (background / surface-elevated / surface-elevated-2) flatten to near-white; the border + shadow-md carry elevation. In dark mode they're three distinct colours so layered surfaces stay legible without relying on borders alone.

The contract

Concern Class
Background bg-surface-elevated-2
Border border border-border/60 dark:border-border/30
Shadow shadow-md baseline. DropdownMenuSubContent is the exception — it uses shadow-lg. DropdownMenuContent, SelectContent, and PopoverContent all use shadow-md.
Radius rounded-md (component default)
Animation Standard Radix data-[state=open]: enter/exit set

Read the full file on GitHub · 77 lines

Changes

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.

  1. 2d ago Changed a1a9a541cbf9
  2. 2mo ago First seen · 77 lines · 54 tokens per session scan A 3c24cf33f7dc

Subscribe to this mod's changes

Shade dropdown surface contract is a skill published in the GitHub repository TryGhost/Ghost (55,632 stars, last pushed today), licensed MIT. It adds 54 tokens to every session and 968 once invoked, about $0.0002 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 2026-08-30.

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