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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.

72

Quality

88%

Does it follow best practices?

Impact

No eval scenarios have been run

SecuritybySnyk

Passed

No known issues

SKILL.md
Quality
Evals
Security

Quality

Content

77%

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

This is a strong, actionable skill with executable code examples, a clear multi-step workflow with validation checkpoints, and well-organized reference pointers. Its main weaknesses are minor verbosity in explanatory parentheticals within constraints and the unverifiable reference file structure. The code examples are production-quality and cover both server and client concerns comprehensively.

Suggestions

Trim explanatory parentheticals in the Constraints section (e.g., remove '(WebSocket connections are stateful — requests must route to the same server instance)') since Claude already understands these concepts.

Remove or condense the 'Knowledge Reference' keyword list — it reads as a tag cloud rather than actionable content.

DimensionReasoningScore

Conciseness

Generally efficient but has some unnecessary elements — the 'Knowledge Reference' section is a keyword dump that adds little value, comments in code are sometimes obvious (e.g., 'Authentication middleware — runs before connection is established'), and the constraints section has some explanatory parentheticals that Claude would already know (e.g., 'WebSocket connections are stateful — requests must route to the same server instance').

2 / 3

Actionability

Provides fully executable, copy-paste-ready code examples for both server and client, including authentication, Redis adapter setup, room management, presence tracking, and reconnection with exponential backoff. The validation step includes a concrete command (`npx wscat -c ws://localhost:3000`) and specific things to verify.

3 / 3

Workflow Clarity

The 6-step core workflow is clearly sequenced with validation checkpoints at steps 4 and 5 — step 4 specifies what to validate locally (auth rejection, room events, message delivery), and step 5 includes a feedback loop (verify Redis before enabling adapter, confirm sticky sessions with test connections). Step 6 adds monitoring with specific metrics and alerts.

3 / 3

Progressive Disclosure

The reference table with 'Load When' guidance is well-structured and clearly signaled, but since no bundle files are provided, we cannot verify the referenced files exist. The inline code examples are substantial (~60 lines total) which is appropriate for a skill of this complexity, but the constraints and output templates sections could potentially be split out for a cleaner overview.

2 / 3

Total

10

/

12

Passed

Description

100%

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

This is a strong skill description that clearly defines its domain (real-time communication), lists specific capabilities, and provides explicit trigger conditions. It uses third-person voice appropriately and includes natural keywords developers would use. The only minor improvement could be mentioning additional trigger variations like 'chat', 'live updates', or 'push notifications' to capture more user intent.

DimensionReasoningScore

Specificity

Lists multiple specific concrete actions: bidirectional messaging, horizontal scaling with Redis, presence tracking, room management. These are clear, actionable capabilities.

3 / 3

Completeness

Explicitly answers both what (bidirectional messaging, horizontal scaling with Redis, presence tracking, room management) and when ('Use when building real-time communication systems with WebSockets or Socket.IO'). The 'Use when' and 'Invoke for' clauses provide clear trigger guidance.

3 / 3

Trigger Term Quality

Includes strong natural keywords users would say: 'WebSockets', 'Socket.IO', 'real-time communication', 'Redis', 'presence tracking', 'room management', 'bidirectional messaging'. These cover the main terms a developer would use when seeking this skill.

3 / 3

Distinctiveness Conflict Risk

Clearly occupies a distinct niche around real-time WebSocket/Socket.IO communication systems. The specific technologies (WebSockets, Socket.IO, Redis) and domain (real-time communication, presence tracking, rooms) make it unlikely to conflict with other 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.

Validation11 / 11 Passed

Validation for skill structure

No warnings or errors.

Repository
Jeffallan/claude-skills
Reviewed

Table of Contents

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