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coss-particles

Index of all COSS UI particle examples. Use when implementing UI features to find copy-paste-ready component patterns built on coss primitives. Each particle has a description and a JSON URL for easy installation.

65

Quality

79%

Does it follow best practices?

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SecuritybySnyk

Low

Low-risk findings worth noting

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tessl review fix ./.agents/skills/coss-particles/SKILL.md
SKILL.md
Quality
Evals
Security

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 well-organized, searchable catalog with concise instructional sections and concrete URL/command references. It is efficient and actionable but leaves minor room to improve by externalizing the full catalog and adding guidance on consuming a fetched JSON manifest.

Suggestions

Move the 484-particle catalog into a reference file (e.g. references/particles.md) and keep SKILL.md as an overview with the component-type list and instructions, so the full index loads only when needed — improving both conciseness and progressive disclosure.

Add a concrete install/use example for a fetched JSON manifest (e.g. the command or snippet that turns https://coss.com/ui/r/p-accordion-1.json into a working component) to close the actionability gap.

Add a brief error-handling note for the fetch step (e.g. what to do when a JSON URL returns 404 or the particle is missing from the index) to strengthen the workflow's feedback loop.

DimensionReasoningScore

Conciseness

The prose sections (intro, how-to, URL pattern, update instructions) are lean and avoid explaining concepts Claude already knows, and each catalog line is real data rather than padding; it stops short of score 5 because the full 484-particle catalog is inlined and loaded on every invocation even when only one component type is needed.

4 / 5

Actionability

Provides concrete, executable guidance — the JSON URL pattern with a worked example, the repo source path, the generator command, and per-particle JSON links — but misses a concrete install/use step for a fetched manifest, leaving a minor gap versus fully copy-paste-ready coverage.

4 / 5

Workflow Clarity

The 'How to use this skill' steps (describe UI → search index → fetch JSON → adapt code) are clearly sequenced and unambiguous, and the single update command is concrete; it does not reach 5 because there is no error-handling guidance (e.g. what to do if a JSON URL 404s), though no destructive/batch validation cap applies to this low-risk search-and-fetch task.

4 / 5

Progressive Disclosure

Well-structured with clear section headers, a component-type list with counts, and in-page anchor navigation, plus clearly signaled external URL references; the minor gap is that the large inlined catalog could arguably live in a separate reference file (no bundle files exist), keeping it just below the 'clearly split, easy navigation' top anchor.

4 / 5

Total

16

/

20

Passed

Description

83%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.

A strong, concise description that clearly states both what the skill provides (a searchable index of copy-paste coss UI particles with JSON install URLs) and when to use it (implementing UI features). It is specific, distinct, and uses natural trigger language with only minor gaps in keyword coverage.

DimensionReasoningScore

Specificity

Names several concrete actions — 'Index of all COSS UI particle examples', 'find copy-paste-ready component patterns', 'a JSON URL for easy installation' — with only minor gaps in coverage, matching the 'several specific actions' anchor rather than the 1-2 actions of score 3.

4 / 5

Completeness

Explicitly answers both what ('Index of all COSS UI particle examples ... copy-paste-ready component patterns built on coss primitives') and when ('Use when implementing UI features to find ...') with concrete trigger phrases, matching the top anchor exactly.

5 / 5

Trigger Term Quality

Includes natural phrases a user would say ('implementing UI features', 'component patterns', 'copy-paste-ready') with good coverage; a few common synonyms (e.g. 'building a UI', specific component names) are missing, so it is above the 'some relevant keywords' anchor but short of comprehensive synonym coverage.

4 / 5

Distinctiveness Conflict Risk

The coss-specific niche ('COSS UI particle examples', 'coss primitives') gives it distinct triggers with minimal conflict risk, but the broad 'implementing UI features' phrase leaves minor overlap risk with general UI/component skills, placing it just below the 'clear niche, minimal conflict' anchor.

4 / 5

Total

17

/

20

Passed

Validation

87%

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

Validation14 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

skill_md_line_count

SKILL.md is long (738 lines); consider splitting into references/ and linking

Warning

metadata_version

'metadata.version' is missing

Warning

Total

14

/

16

Passed

Repository
crafter-station/petdex
Reviewed

Table of Contents

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