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r2-upload

Upload files to Cloudflare R2, AWS S3, or any S3-compatible storage (like MinIO) and generate secure, time-limited presigned download links with configurable expiration, typically set to 5 minutes. Use when the user needs to upload a file to cloud storage and get a shareable link, or mentions R2, S3, presigned URLs, temporary links, or file uploads with expiration.

76

Quality

96%

Does it follow best practices?

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SecuritybySnyk

Passed

No findings from the security scan

SKILL.md
Quality
Evals
Security

Quality

Content

92%

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

The body is concise and highly actionable with concrete commands and config, and the single-step upload workflow is unambiguous. The main gap is progressive disclosure: all reference material is inline with no split-out detail files.

Suggestions

Move the detailed Cloudflare R2 and AWS S3 setup walkthroughs into a separate references/CONFIG.md and link to it from a short Configuration overview, keeping the main body as a quick start.

Extract the full multi-bucket YAML config example into a referenced file, leaving a minimal example inline.

Consider a brief verification note (e.g., how to confirm an upload succeeded or test a presigned link) to round out the workflow.

DimensionReasoningScore

Conciseness

The body is lean — features, concrete config YAML, setup steps, and executable command examples — without explaining concepts Claude already knows (no preamble about what R2/S3 is). Every section earns its place.

3 / 3

Actionability

Provides copy-paste-ready commands (`r2-upload /path/to/file.pdf`, `--key`, `--bucket`, `--expires`, `--public`) alongside concrete config examples and listed tools/env vars, matching the fully-executable score-3 anchor.

3 / 3

Workflow Clarity

The core upload task is a single unambiguous action with clearly documented options; per the simple-skills note a single-purpose action can score 3, and the numbered R2 setup steps add clear sequencing without needing a validation loop.

3 / 3

Progressive Disclosure

Content is well-organized into sections but lives entirely inline in one >50-line file with no bundle files or external references, so content that could be split (detailed R2/AWS setup, full config reference) is not progressively disclosed.

2 / 3

Total

11

/

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.

The description is specific, written in third person, and provides explicit "Use when" trigger guidance with natural keyword coverage. It cleanly answers both what the skill does and when to invoke it.

DimensionReasoningScore

Specificity

Lists multiple concrete actions: "Upload files to Cloudflare R2, AWS S3, or any S3-compatible storage" and "generate secure, time-limited presigned download links with configurable expiration" — matching the score-3 anchor of several specific concrete actions.

3 / 3

Completeness

Explicitly answers both what (upload + presigned link generation) and when via the "Use when the user needs... or mentions..." clause, satisfying the score-3 anchor for explicit triggers.

3 / 3

Trigger Term Quality

Covers natural terms users would say — "R2, S3, presigned URLs, temporary links, or file uploads with expiration" plus "cloud storage and get a shareable link" — giving good coverage of common variations.

3 / 3

Distinctiveness Conflict Risk

A clear niche (cloud storage upload + time-limited presigned download links) with distinct triggers unlikely to fire for unrelated skills.

3 / 3

Total

12

/

12

Passed

Validation

93%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

15

/

16

Passed

Repository
zebbern/claude-code-guide
Reviewed

Table of Contents

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