stride-analysis-patterns

Apply STRIDE methodology to systematically identify threats. Use when analyzing system security, conducting threat modeling sessions, or creating security documentation.

Quality

38%

Does it follow best practices?

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Securityby

Passed

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tessl review fix ./skills/stride-analysis-patterns/SKILL.md

Quality

Content

18%Scale 1-5

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

This skill is essentially a hollow placeholder that provides no actionable guidance on STRIDE threat modeling. The instructions consist entirely of generic meta-advice ('apply best practices', 'provide actionable steps') without any STRIDE-specific content — no explanation of the six threat categories, no analysis templates, no examples, and no workflow. The single reference to an implementation playbook cannot compensate for the complete absence of substantive content in the skill body itself.

Suggestions

Add concrete STRIDE-specific content: define each threat category (Spoofing, Tampering, Repudiation, Information Disclosure, DoS, Elevation of Privilege) with brief examples of how to identify each in a system architecture.

Provide a clear multi-step workflow for conducting a STRIDE analysis session, e.g.: 1) Enumerate system components, 2) Create data flow diagrams, 3) Apply each STRIDE category to each component, 4) Rate and prioritize threats, 5) Document mitigations.

Include at least one concrete example showing a system component analyzed against STRIDE categories with specific threat descriptions and mitigations.

Either provide the referenced `resources/implementation-playbook.md` bundle file or inline the essential patterns and templates needed to make the skill functional.

Dimension	Reasoning	Score
Conciseness	The content is relatively short but includes generic filler like 'Clarify goals, constraints, and required inputs' and 'Apply relevant best practices and validate outcomes' which add no STRIDE-specific value. The 'Do not use' section is boilerplate. Some unnecessary padding exists but it's not severely verbose.	3 / 5
Actionability	The instructions are entirely vague and abstract — 'Apply relevant best practices and validate outcomes' and 'Provide actionable steps and verification' are meta-instructions with zero concrete guidance on how to actually perform STRIDE analysis. There are no examples of threat categories, no templates, no specific steps for identifying Spoofing, Tampering, Repudiation, Information Disclosure, Denial of Service, or Elevation of Privilege threats.	1 / 5
Workflow Clarity	There is no discernible workflow or sequence of steps for conducting a STRIDE analysis. The four bullet points in Instructions are generic platitudes with no sequencing, no validation checkpoints, and no concrete process. A threat modeling skill absolutely requires a clear multi-step workflow.	1 / 5
Progressive Disclosure	The skill references `resources/implementation-playbook.md` for detailed patterns, which is a reasonable structure, but no bundle files are provided so the reference is unverifiable. The SKILL.md itself contains almost no substantive content, making it an empty shell that delegates everything to a file that may not exist. The reference is at least one-level deep and clearly signaled, preventing a score of 1.	2 / 5
	Total	7 / 20 Passed

Description

57%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 establishes a clear niche around STRIDE threat modeling and includes an explicit 'Use when' clause, which is good. However, it lacks specificity in describing what concrete actions the skill performs beyond 'identify threats', and the trigger terms could be expanded to include the individual STRIDE categories and related synonyms users might naturally use.

Suggestions

Add specific concrete actions like 'generate threat matrices, enumerate STRIDE categories (Spoofing, Tampering, Repudiation, Information Disclosure, Denial of Service, Elevation of Privilege), map threats to mitigations, and produce data flow diagrams'.

Expand trigger terms to include natural user phrases like 'security review', 'attack surface analysis', 'DFD', 'security assessment', and the individual STRIDE category names.

Differentiate more clearly from general security skills by specifying output formats or unique capabilities, e.g., 'produces structured threat reports with risk ratings and recommended countermeasures'.

Dimension	Reasoning	Score
Specificity	Names the domain (STRIDE threat modeling) and one vague action ('identify threats'), but doesn't describe concrete actions like 'enumerate spoofing vectors', 'generate threat matrices', 'produce DFD diagrams', or 'map mitigations to threats'. The description stays at a high level.	2 / 5
Completeness	Has both 'what' (apply STRIDE methodology to identify threats) and 'when' ('Use when analyzing system security, conducting threat modeling sessions, or creating security documentation'). The 'what' is somewhat thin and the 'when' could be more specific with additional trigger scenarios, but both components are present.	4 / 5
Trigger Term Quality	Includes relevant keywords like 'STRIDE', 'threat modeling', 'security documentation', and 'system security', but misses natural user phrases like 'security review', 'attack surface', 'data flow diagram', 'DFD', 'spoofing', 'tampering', 'repudiation', 'information disclosure', 'denial of service', 'elevation of privilege', or 'security assessment'.	3 / 5
Distinctiveness Conflict Risk	The mention of 'STRIDE methodology' specifically distinguishes this from generic security skills. However, 'analyzing system security' and 'security documentation' are broad enough to potentially overlap with other security-related skills like vulnerability scanning or security policy writing.	4 / 5
	Total	13 / 20 Passed

Validation

90%

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 — 10 / 11 Passed

Validation for skill structure

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

	Total	10 / 11 Passed

Repository: administrakt0r/AI-Agents-Safe-Coding-Skills
Path: skills/stride-analysis-patterns/SKILL.md
Commit: fbdfd63

Reviewed: 1 day ago

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