bun-workers

Use for Web Workers in Bun, worker_threads, parallel processing, and background tasks.

Quality

63%

Does it follow best practices?

Impact

—

No eval scenarios have been run

Securityby

Passed

No known issues

Optimize this skill with Tessl

npx tessl skill review --optimize ./plugins/bun/skills/bun-workers/SKILL.md

Quality

Discovery

62%

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 has strong trigger terms and a clear niche but critically lacks any description of what the skill actually does. It reads more like a tag list than a capability description. Adding concrete actions (e.g., 'Creates, debugs, and optimizes Web Workers') would significantly improve it.

Suggestions

Add concrete action verbs describing what the skill does, e.g., 'Creates, configures, and debugs Web Workers and worker_threads in Bun for parallel processing and background tasks.'

Expand the 'Use when' clause to include user-facing scenarios, e.g., 'Use when the user needs to offload CPU-intensive work, run tasks in parallel, or set up background processing in Bun.'

Dimension	Reasoning	Score
Specificity	The description names the domain (Web Workers, worker_threads, parallel processing) but does not describe any concrete actions. There are no verbs indicating what the skill actually does—no 'create', 'manage', 'debug', 'configure', etc.	1 / 3
Completeness	It has a 'Use when' clause with trigger conditions, but the 'what does this do' part is essentially absent—there are no concrete capabilities described, only the domain context.	2 / 3
Trigger Term Quality	Includes strong natural keywords users would say: 'Web Workers', 'Bun', 'worker_threads', 'parallel processing', 'background tasks'. These are terms developers naturally use when seeking help in this area.	3 / 3
Distinctiveness Conflict Risk	The combination of 'Web Workers in Bun' and 'worker_threads' is a clear, narrow niche that is unlikely to conflict with other skills. The Bun-specific qualifier further distinguishes it.	3 / 3
	Total	9 / 12 Passed

Implementation

64%

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

This is a solid reference skill with excellent actionability—every section contains complete, executable TypeScript code with clear file annotations. The main weaknesses are its length (content that could be in referenced files is inline) and the lack of decision-making guidance for choosing between Web Workers and worker_threads. The referenced files (optimization.md, patterns.md) are not provided in the bundle, making progressive disclosure partially unverifiable.

Suggestions

Move the Worker Pool, Parallel Map, and Message Channel patterns into a referenced patterns.md file to reduce the main skill's length and improve progressive disclosure.

Add a brief decision guide at the top explaining when to use Web Workers vs worker_threads (e.g., a 2-3 line comparison).

Include the referenced bundle files (references/optimization.md, references/patterns.md) or remove the references if they don't exist.

Dimension	Reasoning	Score
Conciseness	The skill is mostly efficient with executable code examples, but it's quite long (~300 lines) and includes some patterns (Parallel Map, Message Channel) that could be in referenced files. Some sections like 'Worker with URL' partially duplicate the basic usage section. The content is dense but could be tightened.	2 / 3
Actionability	All examples are fully executable TypeScript with clear file annotations (main.ts vs worker.ts). The Worker Pool implementation is complete and copy-paste ready, and the common errors table provides specific fixes. Every section contains concrete, runnable code.	3 / 3
Workflow Clarity	Individual patterns are clear, but there's no explicit guidance on when to choose Web Workers vs worker_threads, and the termination section shows a graceful shutdown pattern but lacks a validation checkpoint (e.g., confirming the worker actually shut down). The CPU-intensive task pattern does show a progress reporting flow, which is good.	2 / 3
Progressive Disclosure	The skill references `references/optimization.md` and `references/patterns.md` with clear loading criteria, which is good. However, no bundle files are provided, so these references are unverifiable. Additionally, the main file is quite long and several patterns (Worker Pool, Parallel Map, Message Channel) could be split into referenced files to keep the overview leaner.	2 / 3
	Total	9 / 12 Passed

Validation

100%

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 — 11 / 11 Passed

Validation for skill structure

No warnings or errors.

Repository: secondsky/claude-skills
Commit: 5e92b71

Reviewed: 21 days ago

Table of Contents

Discovery Implementation Validation

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