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.

Quality

56%

Does it follow best practices?

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Securityby

Passed

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Fix and improve this skill with Tessl

tessl review fix ./plugins/AI-Agents-Safe-Coding-Skills-claude/skills/projection-patterns/SKILL.md

The canonical home for this skill is projection-patterns in rmyndharis/antigravity-skills

Quality

Content

25%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 a generic template with no projection-specific substance: abstract instructions, no code or concrete steps, no validation workflow, and a dangling reference to a non-existent resources file. It fails to deliver the detailed patterns its own description promises.

Suggestions

Replace the generic Instructions with projection-specific steps: define the event schema, write the projection handler, idempotently apply events, rebuild from a checkpoint, and verify the read model against expected query results.

Add at least one concrete, executable example (e.g. a projection handler snippet or a replay command) so the guidance is actionable rather than abstract.

Create the referenced `resources/implementation-playbook.md` (or fix the path) so the progressive-disclosure reference resolves to a real file.

Dimension	Reasoning	Score
Conciseness	Although short, the body is padded with generic non-informative lines ("Comprehensive guide...", "Clarify goals, constraints, and required inputs", "Apply relevant best practices and validate outcomes") that add no domain value, fitting the noticeably-verbose/padded anchor rather than a lean 4-5.	2 / 5
Actionability	It offers only high-level hints ("Apply relevant best practices", "Provide actionable steps and verification") with no concrete code, commands, or projection-specific steps, matching the minimal-concrete-guidance anchor; not a 1 because it at least gestures at inputs and verification.	2 / 5
Workflow Clarity	The Instructions are generic bullets with no real sequence and only a vague "validate outcomes" nod, with no checkpoints for the batch/rebuild operations projections involve, fitting the rough-sequence-many-gaps/validation-absent anchor.	2 / 5
Progressive Disclosure	The body references `resources/implementation-playbook.md` for detail, but the `resources/` directory does not exist, so the reference is broken; this fits the minimal-structure/broken-references anchor and is not a 1 because there is at least one signaled reference.	2 / 5
	Total	8 / 20 Passed

Description

87%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 strong: it states concrete capabilities and gives explicit, natural trigger phrases for when to activate, occupying a distinct niche. It only falls short of the top specificity/trigger anchors by omitting a few synonyms and extension-style terms.

Dimension	Reasoning	Score
Specificity	Names the domain and several concrete actions ("Build read models and projections from event streams", "optimizing query performance"), with only minor coverage gaps; not a level 5 because it does not enumerate a fully comprehensive action set.	4 / 5
Completeness	Explicitly answers both what ("Build read models and projections from event streams") and when ("Use when implementing CQRS read sides, building materialized views, or optimizing query performance") with concrete trigger phrases, matching the top anchor.	5 / 5
Trigger Term Quality	Strong natural-term coverage ("CQRS read sides", "materialized views", "query performance", "event-sourced systems") that users would actually say; a few synonyms or file/extension variants are missing, so it is not a 5.	4 / 5
Distinctiveness Conflict Risk	A clear niche (event-sourced CQRS projections) with distinct triggers and minimal overlap with other skills, matching the top anchor.	5 / 5
	Total	18 / 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: administrakt0r/AI-Agents-Safe-Coding-Skills
Path: plugins/AI-Agents-Safe-Coding-Skills-claude/skills/projection-patterns/SKILL.md
Commit: 57c135b

Reviewed: 2 days ago

Table of Contents

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