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testland/cloudflare-workers-miniflare

Wraps Miniflare 3 (the official Cloudflare Workers simulator) and Wrangler dev for testing Workers locally. Covers Miniflare's getMiniflare() programmatic API (workerd-backed simulation matching prod), the wrangler dev local-mode (live-reload during dev), KV / Durable Objects / R2 / D1 bindings emulation, and Vitest + @cloudflare/vitest-pool-workers for in-process tests. Use when testing Cloudflare Workers code locally.

72

Quality

90%

Does it follow best practices?

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SecuritybySnyk

Passed

No findings from the security scan

Overview
Quality
Evals
Security
Files

Quality

Content

82%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 highly actionable with executable examples for every integration pattern and clear sectioning, scoring near the top on actionability and disclosure. Slight conciseness padding and the absence of explicit validation checkpoints keep it just short of maximum on two dimensions.

DimensionReasoningScore

Conciseness

Mostly lean with tight code examples and well-organized sections, but includes minor restatements ('This is the lowest-overhead test path', 'No CF account/API key needed') and a somewhat-justified overview paragraph that lightly over-explains the workerd/prod relation.

4 / 5

Actionability

Provides fully executable, copy-paste-ready code and commands across all three patterns (wrangler dev, programmatic Miniflare, vitest-pool-workers) plus Durable Objects and D1 test examples covering the common cases.

5 / 5

Workflow Clarity

The install → author → run → CI flow is clearly sequenced and the anti-patterns table guides error avoidance, but there are no explicit validation checkpoints (e.g., confirm tests pass before pushing to CI); the destructive-cap does not apply since these are read/test operations.

4 / 5

Progressive Disclosure

Sections are well-organized (Overview, When to use, Authoring, Running, CI, Anti-patterns, Limitations, References) with one-level-deep external doc links and companion-catalog pointers; no bundle files exist, and the ~200-line body is appropriately self-contained, though a few inline reference blocks could live in separate files.

4 / 5

Total

17

/

20

Passed

Description

92%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 specific, complete, and distinctive, with concrete trigger guidance and comprehensive capability listing. Its only minor weakness is a reliance on technical jargon over plain-language synonyms in trigger terms.

DimensionReasoningScore

Specificity

Lists multiple concrete capabilities — wrapping Miniflare 3 and Wrangler dev, the getMiniflare() API, wrangler dev local-mode, KV/Durable Objects/R2/D1 bindings emulation, and Vitest + @cloudflare/vitest-pool-workers — giving comprehensive coverage of specific actions.

5 / 5

Completeness

Explicitly answers both 'what' (wraps Miniflare 3 and Wrangler dev; covers bindings emulation and Vitest integration) and 'when' with a concrete trigger phrase ('Use when testing Cloudflare Workers code locally').

5 / 5

Trigger Term Quality

Includes natural phrases like 'testing Cloudflare Workers code locally' and 'testing Workers locally', but leans on technical jargon (getMiniflare, vitest-pool-workers) and misses some common synonyms a user might naturally say.

4 / 5

Distinctiveness Conflict Risk

Occupies a clear niche (Cloudflare Workers local testing) with tool-specific triggers, making it unlikely to fire for unrelated skills.

5 / 5

Total

19

/

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.

Validation16 / 16 Passed

Validation for skill structure

No warnings or errors.

Reviewed

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