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websocket-engineer

Use when building real-time communication systems with WebSockets or Socket.IO. Invoke for bidirectional messaging, horizontal scaling with Redis, presence tracking, room management.

Quality

87%

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SecuritybySnyk

Passed

No findings from the security scan

SKILL.md
Quality
Evals
Security

Quality

Content

86%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.

A well-structured body with executable, realistic code for both server and client sides, a sequenced workflow with embedded validation checkpoints, and exemplary progressive disclosure via a load-when reference table. Minor improvements are possible: trim the keyword-list Knowledge Reference section and add error-recovery guidance to the validation steps.

DimensionReasoningScore

Conciseness

The workflow steps, constraints, and code examples are dense and earn their tokens, but the "Knowledge Reference" keyword list duplicates the frontmatter triggers and the maintainer footer/docs link could be trimmed.

4 / 5

Actionability

Two complete, copy-paste-ready examples (server with JWT auth middleware, Redis adapter, rooms/presence; client with exponential backoff, jitter, and message queueing) plus a concrete validation command (`npx wscat -c ws://localhost:3000`) cover the common cases.

5 / 5

Workflow Clarity

The six-step Core Workflow is clearly sequenced with explicit validation checkpoints ("confirm auth rejection on missing/invalid tokens", "verify Redis connection and pub/sub round-trip before enabling the adapter"), but there are no error-recovery loops describing what to do when validation fails.

4 / 5

Progressive Disclosure

The Reference Guide table clearly signals all five one-level-deep reference files with topic and 'Load When' conditions; all five files exist in references/ with no nested referencing, and quick-start code is appropriately inline while bulk detail lives in the bundle.

5 / 5

Total

18

/

20

Passed

Description

83%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.

A strong description with explicit 'Use when' trigger guidance and a concrete capability list covering messaging, scaling, presence, and rooms. Keyword coverage is good but misses a few natural variations (chat, live updates, server push) that users would commonly say.

DimensionReasoningScore

Specificity

"bidirectional messaging, horizontal scaling with Redis, presence tracking, room management" names several concrete capabilities, though coverage has minor gaps (no auth, reconnection, or transport fallback terms).

4 / 5

Completeness

Explicitly answers both: what ("building real-time communication systems with WebSockets or Socket.IO") and when ("Use when... Invoke for..." with concrete trigger phrases), matching the anchor for both what AND when with concrete triggers.

5 / 5

Trigger Term Quality

"WebSockets", "Socket.IO", "real-time communication", "bidirectional messaging", "presence tracking", "room management" are natural user phrases, but common variations like "chat", "live updates", and "server push" are missing from the description itself (they appear only in the frontmatter triggers metadata).

4 / 5

Distinctiveness Conflict Risk

The WebSocket/Socket.IO niche is clear and distinct, but "real-time communication systems" is slightly broad (could cover WebRTC or streaming APIs) and overlaps marginally with related backend framework skills.

4 / 5

Total

17

/

20

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.

Validation — 16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository

Jeffallan/claude-skills

Path

skills/websocket-engineer/SKILL.md

Reviewed

Table of Contents

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