Implementation constraints (paired do / don't)
Review the “Implementation constraints (paired do / don't)” section in the pinned source before continuing.
nexu-io/open-design
Open Orbit briefing skill — selected by the Orbit pipeline when Gmail is the user's only connected connector, or when the user explicitly scopes their daily digest to Gmail. Pulls the past 24 hours of inbox activity (replies awaited, mentions, cc, auto- categorized bulk) from the user's authenticated Gmail connection and renders the digest as the Orbit Daily Digest email opened inside Gmail's reading view. This skill should not be triggered manually — it is invoked by Orbit's daily-digest schedu
npx skills add https://github.com/nexu-io/open-design --skill "plugins/_official/examples/orbit-gmail"Source checked Jul 28, 2026·Refresh due Oct 26, 2026
Reorganized from the pinned upstream SKILL.md
Single-connector Orbit template scoped to Gmail. The briefing renders as the Orbit Daily Digest email already opened inside Gmail's reading view — Gmail top header + the email chrome (toolbar / subject / sender / digest body / reply bar). There is no left rail, no inbox list, an…
npx skills add https://github.com/nexu-io/open-design --skill "plugins/_official/examples/orbit-gmail"The pinned source contains enough sections and task detail for a source-grounded deep guide; automated content is still not an independent test.
820 source words · 6 usable sections
Design process
Sections are extracted automatically from the pinned SKILL.md and link back to the source.
Review the “Implementation constraints (paired do / don't)” section in the pinned source before continuing.
Step 1. Open and read the shipped example.html in this folder before writing any output. That file is the canonical design — your job is to reproduce it, not reinterpret it.
This skill ships with its own complete visual language baked into example.html (Gmail / Google Sans / Material chrome). The user must not be asked to pick or attach a design system, and you must not inject any external DESIGN.md tokens into the output.
Type stack: - 'Google Sans', 'Roboto', -apple-system, system-ui, sans-serif - Logo wordmark: Google Sans 22px medium - Body: 14px / line-height 20px - Email preview: 13px
1. Gmail top header () — full width, white. Left: hamburger (☰) + Gmail wordmark (Gmail, first G red). Center: rounded search bar (eaf1fb bg, search icon left, settings icon right, placeholder 搜索邮件). Right: ❓ help, ⚙ settings, ▦ Google apps launcher, round avatar.
SkillSignal prompt templates
These prompts were written by SkillSignal from the source structure; they are not upstream text.
Source-grounded prompt
Use for a design task while explicitly checking the source sections.
Use orbit-gmail for this design task: [task]. Inputs and constraints: [details]. Work through these pinned SKILL.md sections: “Implementation constraints (paired do / don't)”, “⚠️ Source-of-truth protocol (read this first)”, “⚠️ Design system policy”, “Canvas tokens (use these exact values)”, “Page sections (top to bottom — the page is one column, not a 3-pane app)”. Cite the concrete requirements that shape each step, do not invent capabilities absent from the source, and verify the result against: [acceptance criteria].
Design checklist
The source section “Implementation constraints (paired do / don't)” has been checked.
The source section “⚠️ Source-of-truth protocol (read this first)” has been checked.
The source section “⚠️ Design system policy” has been checked.
The source section “Canvas tokens (use these exact values)” has been checked.
Choose a different workflow
Open Orbit briefing skill — selected by the Orbit pipeline when Gmail is the user's only connected connector, or when the user explicitly scopes their daily digest to Gmail. Pulls the past 24 hours of inbox activity (replies awaited, mentions, cc, auto- categorized bulk) from the user's authenticated Gmail connection and renders the digest as the Orbit Daily Digest email opened inside Gmail's reading view. This skill should not be triggered manually — it is invoked by Orbit's daily-digest schedu
A separate implementation from nexu-io/open-design; compare its source, maintenance signals, and permission requirements.
Open source detailWhen the user wants to plan, design, or implement an A/B test or experiment, or build a growth experimentation program. Also use when the user mentions "A/B test," "split test," "experiment," "test this change," "variant copy," "multivariate test," "hypothesis," "should I test this," "which version is better," "test two versions," "statistical significance," "how long should I run this test," "growth experiments," "experiment velocity," "experiment backlog," "ICE score," "experimentation program
A separate implementation from coreyhaines31/marketingskills; compare its source, maintenance signals, and permission requirements.
Open source detailWhen the user wants to reduce churn, build cancellation flows, set up save offers, recover failed payments, or implement retention strategies. Also use when the user mentions 'churn,' 'cancel flow,' 'offboarding,' 'save offer,' 'dunning,' 'failed payment recovery,' 'win-back,' 'retention,' 'exit survey,' 'pause subscription,' 'involuntary churn,' 'people keep canceling,' 'churn rate is too high,' 'how do I keep users,' or 'customers are leaving.' Use this whenever someone is losing subscribers o
A separate implementation from coreyhaines31/marketingskills; compare its source, maintenance signals, and permission requirements.
Open source detailFAQ
Single-connector Orbit template scoped to Gmail. The briefing renders as the Orbit Daily Digest email already opened inside Gmail's reading view — Gmail top header + the email chrome (toolbar / subject / sender / digest body / reply bar). There is no left rail, no inbox list, an…
The source record exposes this install command: npx skills add https://github.com/nexu-io/open-design --skill "plugins/_official/examples/orbit-gmail". Inspect the command and pinned source before running it.
Quality breakdown
Based on traceable docs and repository signals; stars are not treated as quality.
Compare before choosing
These links are selected from shared tasks, functions, stacks, platforms, and same-name variants. Compare the source owner, documentation, permissions, and maintenance signals.
Open Orbit briefing skill — selected by the Orbit pipeline when Gmail is the user's only connected connector, or when the user explicitly scopes their daily digest to Gmail. Pulls the past 24 hours of inbox activity (replies awaited, mentions, cc, auto- categorized bulk) from the user's authenticated Gmail connection and renders the digest as the Orbit Daily Digest email opened inside Gmail's reading view. This skill should not be triggered manually — it is invoked by Orbit's daily-digest schedu
When the user wants to plan, design, or implement an A/B test or experiment, or build a growth experimentation program. Also use when the user mentions "A/B test," "split test," "experiment," "test this change," "variant copy," "multivariate test," "hypothesis," "should I test this," "which version is better," "test two versions," "statistical significance," "how long should I run this test," "growth experiments," "experiment velocity," "experiment backlog," "ICE score," "experimentation program
When the user wants to reduce churn, build cancellation flows, set up save offers, recover failed payments, or implement retention strategies. Also use when the user mentions 'churn,' 'cancel flow,' 'offboarding,' 'save offer,' 'dunning,' 'failed payment recovery,' 'win-back,' 'retention,' 'exit survey,' 'pause subscription,' 'involuntary churn,' 'people keep canceling,' 'churn rate is too high,' 'how do I keep users,' or 'customers are leaving.' Use this whenever someone is losing subscribers o
Grounded design brief from the adopted corpus — style, WCAG-checked color tokens, typography, layout pattern, anti-patterns. Use on ui-design-brief or any which-style/palette/font/chart decision.
Write and maintain DESIGN.md + PRODUCT.md — captures visual decisions and interaction patterns so design tasks stay consistent across sessions without re-scanning past work.
Single-connector Orbit template scoped to Gmail. The briefing renders as the Orbit Daily Digest email already opened inside Gmail's reading view — Gmail top header + the email chrome (toolbar / subject / sender / digest body / reply bar). There is no left rail, no inbox list, and no three-pane layout.
Step 1. Open and read the shipped example.html in this folder
before writing any output. That file is the canonical design — your
job is to reproduce it, not reinterpret it.
Step 2. Mirror the example's structure 1:1:
<header> (Gmail top bar) →
<main class="digest-wrap"> → <div class="email-chrome"> →
toolbar / subject / sender row / digest body / reply bar.<script> block at the end (action-btn / reply-btn link
injection).Step 3. You may refresh mock copy (sender names, subjects, summary
text, times) so it reads as "today", but you must not invent
extra UI: no inbox listing, no left rail, no Categories tab strip,
no extra digest sections, no chrome ornaments. If a detail is not
already in example.html, it does not belong in your output.
The sections below are a reference for tokens and visual language — not a license to extend the page.
This skill ships with its own complete visual language baked into
example.html (Gmail / Google Sans / Material chrome). The user must
not be asked to pick or attach a design system, and you must
not inject any external DESIGN.md tokens into the output.
example.html.This is a hard constraint: the briefing must read as a real Gmail page, not as the user's brand.
page bg: #f6f8fc
surface: #ffffff
border: #e0e0e0
text: #202124
text-secondary: #5f6368
text-muted: #80868b
surface-hover: #f1f3f4
red (Gmail): #D93025 /* Compose, important markers, accent */
blue: #1a73e8 /* CTA / link */
yellow: #f4b400 /* important ★ */
green: #0f9d58
search bar bg: #eaf1fb /* light blue-tinted pill */
Type stack:
'Google Sans', 'Roboto', -apple-system, system-ui, sans-serifGmail top header (<header>) — full width, white.
Left: hamburger (☰) + Gmail wordmark (Gmail, first G red).
Center: rounded search bar (#eaf1fb bg, search icon left, settings
icon right, placeholder 搜索邮件).
Right: ❓ help, ⚙ settings, ▦ Google apps launcher, round avatar.
Email chrome (<main class="digest-wrap"> <div class="email-chrome">)
— the opened email lives directly under the header. No left rail,
no inbox list. Sub-blocks in order:
a. Email toolbar — back / archive / delete / mark unread / label / spacer / prev / next.
b. Email subject area — <h1 class="email-subject"> with the
digest subject (e.g. ☀ Eli, 你昨天的 6 封重要邮件 — Open Orbit Daily) followed by an inline Orbit tag.
c. Sender row — round avatar O + Open Orbit <orbit@opendesign.local> + 收件人 我 ▾ + date right-aligned +
reply icon + more icon.
d. Digest body (<div class="digest-body">):
action-btn primaryaction-btn ghostdigest-footer micro-tage. Reply bar — bottom row with 回复 / 全部回复 / 转发 buttons.
| Don't | Do |
|---|---|
| Render a left rail (Compose / system labels / colored labels) | Skip the rail entirely; the page is single-column under the header |
| Render an inbox list of other emails | Show only the opened Orbit Daily Digest email |
| Render a Categories tab strip (主要 / 社交 / 推广) | Skip it; the digest occupies the reading view directly |
| Use non-Google typography | Use 'Google Sans', 'Roboto', -apple-system, system-ui, sans-serif |
| Add drop shadows on the Gmail chrome | Flat surfaces; only the subtle Material 1 elevation when an element is focused |
| Render avatars as squares | Always circles — sender 40px, card 32px, inline 28px |
| Use lorem ipsum | Write real-shaped Gmail copy: "Q3 预算确认", "Login redesign 反馈", senders like Allen Liu / Marie / Nina Park |
| Use dark mode | Stay on Gmail's default light theme (#f6f8fc page) |
| Brand the Gmail chrome with Orbit | Orbit branding lives only inside the digest body (subject Orbit tag + footer micro-tag) |
| Put yellow important stars on multiple inbox rows | Only the Orbit Daily Digest row can carry the important marker |