hello-world

A simple test skill that greets the user

Quality

69%

Does it follow best practices?

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Adds up to 20 points to the overall score

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Securityby

Passed

No findings from the security scan

Fix and improve this skill with Tessl

tessl review fix ./skills/hello-world/SKILL.md

Quality

Content

85%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 exceptionally lean and well-structured for a trivial test skill, scoring top marks on conciseness, workflow clarity, and progressive disclosure, with only actionability lagging because the guidance stays high-level.

Suggestions

Add one concrete example of an actual greeting (e.g. a sample "Hello! The skill system is operational." response) to make the guidance more directly executable.

Optionally specify what "confirm that the skill system is operational" means concretely so the second step is unambiguous rather than implied.

Dimension	Reasoning	Score
Conciseness	The body is lean and efficient with no over-explanation of concepts Claude already knows; every line ("Greet the user warmly", "Confirm that the skill system is operational") earns its place, matching the score-5 anchor.	5 / 5
Actionability	Steps are imperative and clear but remain high-level hints with no concrete examples or specifics, fitting the score-3 anchor of some concrete guidance that is incomplete.	3 / 5
Workflow Clarity	As a simple single-purpose skill under 50 lines with an unambiguous two-step sequence and no destructive or batch operations, the simple-skill exception applies and workflow clarity is fully clear.	5 / 5
Progressive Disclosure	The skill is under 50 lines, needs no external references, and is organized into clear sections ("When to use", "Steps"); no bundle files exist to verify, so the simple-skill exception yields a 5.	5 / 5
	Total	18 / 20 Passed

Description

53%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 is concise and third-person with a clear purpose, but it omits any explicit "Use when..." trigger guidance and offers only one concrete action, leaving it mid-pack across most dimensions.

Suggestions

Add an explicit trigger clause, e.g. "Use when the user asks for a greeting or wants to test that skills are working."

Include natural synonyms users might say (greeting, hello, say hi) to broaden trigger-term coverage.

Name one or two more concrete actions to lift specificity from a single action toward comprehensive coverage.

Dimension	Reasoning	Score
Specificity	Names the domain ("test skill") and one concrete action ("greets the user"), matching the score-3 anchor of naming a domain with 1-2 concrete actions but not comprehensive coverage.	3 / 5
Completeness	It states a clear "what" ("greets the user") but has no "Use when..." trigger clause, so per the guideline a missing explicit trigger caps completeness at 3.	3 / 5
Trigger Term Quality	"greets the user" supplies a relevant keyword but lacks common synonyms users would naturally say (e.g. greeting, hello, say hi), fitting the score-3 anchor of some relevant keywords with missing variations.	3 / 5
Distinctiveness Conflict Risk	The narrow single purpose of greeting/testing is mostly distinct with only minor overlap risk against closely related conversational skills, matching the score-4 anchor.	4 / 5
	Total	13 / 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: popey/test-tessl-review-skill
Path: skills/hello-world/SKILL.md
Commit: d7b503a

Reviewed: 1 day ago

Table of Contents

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