poster-hero

Vertical poster or Moments-style share image with strong visual impact.

Quality

61%

Does it follow best practices?

Run evals on this skill

Adds up to 20 points to the overall score

View guide

Securityby

Low

Low-risk findings worth noting

Fix and improve this skill with Tessl

tessl review fix ./skills/poster-hero/SKILL.md

Quality

Content

75%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The body is a lean, actionable template spec with concrete Tailwind classes and a clear top-to-bottom layout sequence, well-suited to a simple single-purpose skill. It falls just short of top marks only for lacking explicit section headers and validation checkpoints.

Suggestions

Group the bullets under explicit section headers (e.g. '## Layout', '## Visual style') to improve navigability.

Add a short validation note such as confirming the 1080x1920 container and that the QR placeholder SVG is present before delivery.

Specify concrete sizing/spacing values for the title and info cards instead of qualitative descriptions.

Dimension	Reasoning	Score
Conciseness	The body is a tight bullet list of layout/visual specs ('上部 30% 留白 + 一个大 emoji', 'from-violet-500 via-fuchsia-500 to-indigo-500') with no padding over concepts Claude already knows; not a 5 because a few phrases like '文字白色 + 1 个对比色高亮' slightly restate the obvious, and there is no over-explanation to penalize further.	4 / 5
Actionability	Concrete, near-copy-paste-ready guidance: exact container classes 'w-[1080px] h-[1920px] mx-auto', a real Tailwind gradient, and 'SVG 占位' for the QR code; not a 5 because spacing/sizing details for the title and info cards are described qualitatively ('text-8xl', '3-5 条核心要点') rather than as fully specified values, leaving minor gaps.	4 / 5
Workflow Clarity	Layout is sequenced top-to-bottom (top 30%, center title, lower cards, bottom-right QR) giving a clear build order; not a 5 because there are no explicit validation checkpoints and no feedback loop, and not lower because this is a non-destructive single-artifact template where the simple-skill exception applies.	4 / 5
Progressive Disclosure	The content is short and organized into a single well-structured template section with logical sub-points, and no bundle files exist to reference; under the simple-skill guideline this scores 4+ — not a 5 because the bullets are not grouped under explicit section headers, leaving minor organization gaps.	4 / 5
	Total	16 / 20 Passed

Description

48%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description clearly identifies the output domain (vertical posters / Moments share images) but provides no concrete actions and omits any 'Use when...' trigger guidance, which caps completeness. It is concise and reasonably distinctive yet under-specified for triggering.

Suggestions

Add a 'Use when...' clause stating when to invoke this skill, e.g. 'Use when the user wants a vertical poster or a Moments-style share image.'

Add concrete actions, e.g. 'Generates a 1080x1920 vertical poster with gradient background, large title, info cards, and QR-code placeholder.'

Include natural trigger synonyms such as 'share image', '宣传图', or '竖版海报' to broaden keyword coverage.

Dimension	Reasoning	Score
Specificity	Quotes 'Vertical poster or Moments-style share image with strong visual impact' name the output domain but list no concrete actions — it describes what the artifact is rather than what the skill does, matching the 'names the domain but actions are minimal or generic' anchor; not a 3 because there are zero concrete verbs/actions.	2 / 5
Completeness	It states a clear 'what' (vertical poster / Moments-style share image) but the 'when' is entirely absent — no 'Use when...' clause or equivalent explicit trigger guidance exists, capping completeness at 3 per the judging guidelines; not a 4 because there is no use-when trigger at all.	3 / 5
Trigger Term Quality	Natural terms 'Vertical poster', 'Moments-style share image', 'strong visual impact' are relevant but cover only one synonym cluster (poster/海报/朋友圈); missing common variations like 'share image', 'banner', or format hints users would actually say. Not a 4 because coverage of natural synonyms is thin, not a 2 because the terms present are genuinely natural.	3 / 5
Distinctiveness Conflict Risk	'Vertical poster or Moments-style share image' carves a fairly specific niche distinct from other artifact skills, with only minor overlap risk against generic image/illustration skills; not a 5 because 'poster' is a broad term shared by many design skills and no explicit trigger phrase sharpens the boundary.	4 / 5
	Total	12 / 20 Passed

Validation

93%

Warnings & errors only

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 15 / 16 Passed

Validation for skill structure

Criteria	Description	Result
frontmatter_unknown_keys	Unknown frontmatter key(s) found; consider removing or moving to metadata	Warning

	Total	15 / 16 Passed

Repository: nexu-io/open-design
Path: skills/poster-hero/SKILL.md
Commit: d4138ea

Reviewed: 4 days ago

Table of Contents

Discovery Implementation Validation

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.