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projection-patterns

Build read models and projections from event streams. Use when implementing CQRS read sides, building materialized views, or optimizing query performance in event-sourced systems.

59

Quality

67%

Does it follow best practices?

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SecuritybySnyk

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tessl review fix ./skills/projection-patterns/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

35%Weight 40%Scale 1-3

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

The body has the right lightweight shape and a clean section structure, but it is content-thin: no executable guidance, generic placeholder instructions, and a reference to a resource file that is absent. The overview is well-intentioned but currently non-functional for actual projection work.

Suggestions

Replace the generic "Instructions" platitudes with a concrete projection-building workflow, e.g. an explicit sequence of subscribing to the event stream, applying handlers per event type, idempotently updating the read store, and a verification/replay checkpoint.

Add at least one executable example (e.g. a small code or pseudo-schema snippet showing an event handler updating a read model) so the skill is actionable rather than descriptive.

Create the referenced `resources/implementation-playbook.md` (or change the pointer to an existing file) — the body cites it twice but no `resources/` directory exists, leaving a broken reference.

Remove the tautological "Do not use this skill when" entries ("The task is unrelated to projection patterns") which add no information.

DimensionReasoningScore

Conciseness

The body is short and avoids explaining concepts Claude already knows, but the generic "Do not use this skill when" bullets and platitudinous "Instructions" ("Apply relevant best practices", "Provide actionable steps") are filler that could be tightened, so it sits at level 2 rather than the every-token-earns-its-place level 3.

2 / 3

Actionability

There is no concrete code, command, or worked example; guidance like "Apply relevant best practices and validate outcomes" is vague and describes rather than instructs, matching the level-1 anchor. The only concrete pointer is to a resource file that does not exist.

1 / 3

Workflow Clarity

A nominal sequence is present (clarify goals → apply practices → validate outcomes), but these are generic platitudes with no real projection-building steps or explicit validation checkpoints, fitting the level-2 anchor of a sequence with missing/implicit checkpoints rather than a concrete workflow.

2 / 3

Progressive Disclosure

The file is structured as an overview pointing to one detailed reference, which is the right shape, but the referenced `resources/implementation-playbook.md` does not exist on disk, so navigation is broken — level 2 rather than 3 because the clearly-signaled reference is a dead path.

2 / 3

Total

7

/

12

Passed

Description

100%Weight 40%Scale 1-3

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 tight, well-constructed description: third-person voice, concrete capabilities, and an explicit use-when trigger with natural domain keywords. It cleanly satisfies all four dimensions.

DimensionReasoningScore

Specificity

It lists concrete actions — "Build read models and projections from event streams" — plus specific scenarios (CQRS read sides, materialized views, query performance), matching the anchor for multiple specific concrete actions rather than the less comprehensive level 2.

3 / 3

Completeness

It answers both what ("Build read models and projections from event streams") and when via an explicit "Use when" clause, hitting the top anchor for completeness.

3 / 3

Trigger Term Quality

It surfaces natural domain terms a user would say — "CQRS read sides", "materialized views", "event-sourced systems", "projections", "query performance" — giving good coverage of likely trigger phrases.

3 / 3

Distinctiveness Conflict Risk

The CQRS/event-sourcing projection niche is narrow with distinct triggers, making it unlikely to fire for unrelated skills.

3 / 3

Total

12

/

12

Passed

Validation

100%

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

Validation16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository
rmyndharis/antigravity-skills
Reviewed

Table of Contents

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