CtrlK

https-certificate-checker

Https Certificate Checker - Auto-activating skill for Security Fundamentals. Triggers on: https certificate checker, https certificate checker Part of the Security Fundamentals skill category.

Install with Tessl CLI

npx tessl i github:jeremylongshore/claude-code-plugins-plus-skills --skill https-certificate-checker

What are skills?

Overall
score

19%

Review — 4%

Does it follow best practices?

Validation — 11 / 16 Passed

Validation for skill structure

SKILL.md

Review

Evals

Activation

This description is essentially a placeholder that provides almost no useful information for skill selection. It lacks any concrete actions, meaningful trigger terms, or guidance on when to use it. The only distinguishing element is the domain reference to HTTPS certificates, but even this is not elaborated upon.

Suggestions

Add specific actions the skill performs, e.g., 'Validates HTTPS certificates, checks expiration dates, diagnoses SSL/TLS connection issues, and verifies certificate chains.'

Include a 'Use when...' clause with natural trigger terms: 'Use when the user mentions SSL certificates, certificate errors, HTTPS issues, cert expiration, TLS problems, or secure connection failures.'

Add common user phrases and file/protocol references like '.pem files', 'certificate authority', 'self-signed cert', 'certificate warning' to improve trigger term coverage.

Dimension	Reasoning	Score
Specificity	The description only names the skill 'Https Certificate Checker' without describing any concrete actions. There are no verbs indicating what the skill actually does (e.g., validate, inspect, diagnose, check expiration).	1 / 3
Completeness	The description fails to answer 'what does this do' beyond the name, and provides no 'when should Claude use it' guidance. The 'Triggers on' section just repeats the skill name rather than providing meaningful trigger scenarios.	1 / 3
Trigger Term Quality	The trigger terms listed are just the skill name repeated twice ('https certificate checker'). Missing natural user phrases like 'SSL certificate', 'cert expired', 'TLS', 'certificate validation', 'secure connection', or 'certificate error'.	1 / 3
Distinctiveness Conflict Risk	The term 'certificate checker' is somewhat specific to HTTPS/SSL domain, which provides some distinctiveness. However, without concrete actions described, it could overlap with other security-related skills.	2 / 3
	Total	5 / 12 Passed

Implementation

This skill is entirely meta-content describing what the skill supposedly does, without any actual instructional content. It contains zero actionable guidance on HTTPS certificate checking - no code examples, no commands (like openssl or curl), no explanation of what to check for (expiration, chain validity, cipher suites), and no workflow for diagnosing certificate issues.

Suggestions

Add executable code examples showing how to check certificates (e.g., `openssl s_client -connect example.com:443` or Python ssl module usage)

Include a concrete checklist of what to verify: expiration date, certificate chain, hostname matching, revocation status

Provide specific commands or code for common certificate checking scenarios with expected output examples

Remove all meta-description content ('This skill provides...', 'When to Use...') and replace with actual technical guidance

Dimension	Reasoning	Score
Conciseness	The content is padded with generic boilerplate that explains nothing specific about HTTPS certificate checking. Phrases like 'provides automated assistance' and 'follows industry best practices' are filler that Claude doesn't need.	1 / 3
Actionability	No concrete code, commands, or specific instructions are provided. The skill describes what it does abstractly ('provides step-by-step guidance') but never actually provides any guidance on how to check HTTPS certificates.	1 / 3
Workflow Clarity	No workflow, steps, or process is defined. The content only describes trigger phrases and vague capabilities without any actual procedure for certificate checking.	1 / 3
Progressive Disclosure	The content is a monolithic block of meta-description with no useful structure. There are no references to detailed materials, examples, or related documentation that would help with actual certificate checking tasks.	1 / 3
	Total	4 / 12 Passed

Validation

69%

Warnings & errors only

Validation — 11 / 16 Passed

Validation for skill structure

Criteria	Description	Result
description_trigger_hint	Description may be missing an explicit 'when to use' trigger hint (e.g., 'Use when...')	Warning
allowed_tools_field	'allowed-tools' contains unusual tool name(s)	Warning
metadata_version	'metadata' field is not a dictionary	Warning
frontmatter_unknown_keys	Unknown frontmatter key(s) found; consider removing or moving to metadata	Warning
body_steps	No step-by-step structure detected (no ordered list); consider adding a simple workflow	Warning

	Total	11 / 16 Passed

Reviewed: 22 days ago

Table of Contents

Activation 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.