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.
92
92%
Does it follow best practices?
Impact
91%
1.16xAverage score across 6 eval scenarios
Passed
No known issues
Quality
Discovery
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 scope around real-time communication systems using WebSockets and Socket.IO. It provides explicit trigger conditions, lists concrete capabilities, and uses technology-specific terms that make it highly distinguishable. The description is concise yet comprehensive, following the recommended pattern of 'Use when...' with specific triggers.
| Dimension | Reasoning | Score |
|---|---|---|
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'). | 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'. Good coverage of terms developers would naturally use. | 3 / 3 |
Distinctiveness Conflict Risk | Clearly scoped to real-time communication with WebSockets/Socket.IO. The combination of specific technologies (WebSockets, Socket.IO, Redis) and specific patterns (presence tracking, room management) creates a distinct niche unlikely to conflict with other skills. | 3 / 3 |
Total | 12 / 12 Passed |
Implementation
85%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 skill with excellent actionability and progressive disclosure. The code examples are production-quality and cover the key scenarios (server setup with auth/rooms/presence, client reconnection with message queuing). Minor improvements could be made in conciseness by trimming redundant comments and the keyword-dump Knowledge Reference section.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The skill is mostly efficient but includes some elements that could be tightened — the Knowledge Reference section at the bottom is just a keyword list that adds little value, and some inline comments in the code examples explain things Claude already knows (e.g., 'Authentication middleware — runs before connection is established'). However, overall it respects Claude's intelligence reasonably well. | 2 / 3 |
Actionability | The code examples are fully executable, copy-paste ready, and cover both server and client sides with real libraries (Socket.IO, Redis adapter, JWT). The validation step includes a concrete command (`npx wscat`), and the constraints provide specific, actionable guidance rather than vague advice. | 3 / 3 |
Workflow Clarity | The core workflow is clearly sequenced with explicit validation checkpoints — step 4 specifies what to validate locally (auth rejection, room events, message delivery), step 5 includes a verify-before-proceeding pattern for Redis and sticky sessions. The constraints section reinforces validation requirements for production readiness. | 3 / 3 |
Progressive Disclosure | The reference guide table provides clear one-level-deep navigation to five separate reference files with explicit 'Load When' conditions, making it easy to find detailed guidance without cluttering the main skill. The main file serves as a well-structured overview with inline essentials and pointers to deeper content. | 3 / 3 |
Total | 11 / 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.
Validation — 11 / 11 Passed
Validation for skill structure
No warnings or errors.
- Repository
- jeffallan/claude-skills
- Commit
3d95bb1
- Reviewed
Table of Contents
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