CtrlK
BlogDocsLog inGet started
Tessl Logo

broken-html

Use when auditing metadata, crawlability, structured data, or indexability related to Fix malformed HTML structure. Verify the rendered HTML and HTTP response rather than relying only on source files.

58

Quality

67%

Does it follow best practices?

Run evals on this skill

Adds up to 20 points to the overall score

View guide

SecuritybySnyk

Passed

No findings from the security scan

Fix and improve this skill with Tessl

tessl review fix ./skills/broken-html/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

65%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 content is well-structured and lean with excellent progressive disclosure to a single reference file, but the body's guidance is high-level: it lacks concrete validation tooling and explicit verification checkpoints, capping actionability and workflow clarity.

Suggestions

Name concrete validation tools or methods in the Check section (e.g. the W3C validator, browser DevTools 'Elements' view, or a specific crawler) so the guidance is executable, not just descriptive.

Add an explicit Verify/Validate checkpoint step in the workflow (e.g. re-fetch the rendered HTML after fixes and confirm tags are closed) to lift workflow clarity above 3.

Surface at least one short code snippet or command inline in the body rather than deferring all examples to the reference, so the core fix is immediately actionable.

DimensionReasoningScore

Conciseness

The body is lean with short, sectioned guidance and no heavy padding; the only minor over-explanation is the intro sentence on why malformed HTML matters, which Claude already knows.

4 / 5

Actionability

It lists specific things to check (unclosed tags, nesting, stray tags, head/body hierarchy) and gives concrete framing in Code Review, but the body names no tools, commands, or methods for validating or verifying HTML, leaving key execution details missing.

3 / 5

Workflow Clarity

A rough Check -> Fix -> Explain -> Code Review sequence is present, but there are no explicit validation/verification checkpoints in the body; per the destructive/batch-audit cap this stays at 3.

3 / 5

Progressive Disclosure

The body is a concise, well-organized overview with clearly signaled, one-level-deep navigation to references/rule.md (a real file), keeping detail appropriately out of SKILL.md.

5 / 5

Total

15

/

20

Passed

Description

70%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 gives a clear trigger clause and names the domain with a couple of concrete verification actions, but the 'what' is framed indirectly and the trigger terms are fairly technical, leaving it solid but not exemplary.

Suggestions

Lead with a crisp statement of what the skill does (e.g. 'Audits and helps fix malformed HTML structure...') before the 'Use when' clause so the 'what' is as explicit as the 'when'.

Add user-natural synonyms alongside the technical terms (e.g. 'broken or invalid HTML', 'SEO audit', 'tag nesting errors') to broaden trigger coverage.

Tighten the awkward phrasing 'auditing ... related to Fix malformed HTML structure' so the capability reads as an action rather than a reference to the rule title.

DimensionReasoningScore

Specificity

Names the SEO/HTML-audit domain and two concrete actions (auditing metadata/crawlability/structured data/indexability; verifying rendered HTML and HTTP response), but the action set is not comprehensive enough for a 4.

3 / 5

Completeness

Both 'what' (verify rendered HTML/HTTP response, audit malformed HTML) and an explicit 'Use when...' trigger are present; the 'what' is stated somewhat indirectly rather than crisply, keeping it just below a 5.

4 / 5

Trigger Term Quality

Good coverage of relevant natural terms (metadata, crawlability, structured data, indexability, rendered HTML, HTTP response, malformed HTML), though a few common synonyms a user might say are missing.

4 / 5

Distinctiveness Conflict Risk

Has a clear SEO/HTML-structure niche with distinct triggers, but the broad auditing phrasing (metadata, crawlability, structured data, indexability) creates minor overlap risk with related SEO skills.

4 / 5

Total

15

/

20

Passed

Validation

93%

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

Validation15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

metadata_version

'metadata.version' is missing

Warning

Total

15

/

16

Passed

Repository
thedaviddias/Front-End-Checklist
Reviewed

Table of Contents

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.