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export-download-debugging

Diagnose and fix browser, preview, or Electron export/download failures, especially image export issues involving Save As, Blob/Data URLs, the File System Access API, createWritable failures, and 0 KB files.

64

Quality

78%

Does it follow best practices?

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SecuritybySnyk

Passed

No findings from the security scan

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tessl review fix ./skills/export-download-debugging/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

86%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 content is concise, well-structured, and actionable for a diagnostic skill, with clear sequencing and explicit validation steps. The main gap is the absence of a copy-paste code example for the recommended fix routing.

Suggestions

Add a short copy-paste code snippet showing the fallback routing (e.g. a try/catch around showSaveFilePicker().createWritable() that falls back to an <a download> trigger) to push actionability to 5.

Tighten the validation step into an explicit validate→fix→re-run loop (e.g. 'If typecheck or tests fail, fix and re-run before proceeding') to lift workflow_clarity to 5.

Consider a one-line 'If payload is 0 bytes, stop and re-check capture before any save' checkpoint between Fix order and Validation to make the feedback loop explicit.

DimensionReasoningScore

Conciseness

The ~49-line body is lean and assumes Claude's competence — it never explains what Blob URLs, Electron, or the File System Access API are — and every section (Core rule, Evidence, Fix order, Validation) earns its place, matching the 'lean and efficient; every token earns its place' anchor.

5 / 5

Actionability

Guidance is concrete with named APIs and routing rules ("If `showSaveFilePicker().createWritable()` fails ... route to `<a download>`") plus executable commands (`pnpm --filter @open-design/web typecheck`, `pnpm guard`), but there is no copy-paste code snippet for the actual fix, so it falls at 'mostly executable; minor gaps' rather than 5.

4 / 5

Workflow Clarity

The numbered Fix order (1–6) gives a clear sequence and the Validation section provides explicit checkpoints (focused tests, typecheck, pnpm guard, staged-diff inspection) with conditional fallback routing; it is not a tight validate→re-validate→proceed loop, so it lands at 'clear sequence with most checkpoints' rather than 5.

4 / 5

Progressive Disclosure

The body is under 50 lines, has no external references, and is organized into well-labeled sections (Core rule, Evidence, Fix order, Validation); per the simple-skill scoring note this earns a 5 with just well-organized sections.

5 / 5

Total

18

/

20

Passed

Description

70%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 and clearly niche-scoped with rich trigger keywords, but it omits an explicit 'Use when' clause, which caps its completeness. Adding a one-sentence usage trigger would lift the weakest dimension.

Suggestions

Append an explicit 'Use when ...' clause to the description (e.g. 'Use when an export or download runs but yields an empty, missing, or 0 KB file') to satisfy the completeness 'when' requirement.

Add the affected file extensions (e.g. .png, .jpg, .webp) to the description to push trigger-term coverage from good to comprehensive.

Consider one more action verb beyond 'Diagnose and fix' (e.g. 'recover' or 'reroute') to broaden the action list toward full specificity.

DimensionReasoningScore

Specificity

"Diagnose and fix" are only two action verbs, but the subject matter is enumerated with high specificity (Save As, Blob/Data URLs, File System Access API, createWritable failures, 0 KB files), matching the 'lists several specific actions; minor gaps' anchor rather than the 5-anchor's broader action set.

4 / 5

Completeness

The 'what' is clear ("Diagnose and fix ... export/download failures"), but the description field lacks an explicit 'Use when...' clause; per the judging guidelines a missing trigger clause caps completeness at 3 even though the body later supplies the 'when'.

3 / 5

Trigger Term Quality

Strong keyword coverage including synonyms ("Blob/Data URLs", "Save As", "browser, preview, or Electron") and concrete API names a user would mention, but no file extensions like .png/.jpg, so it stops short of the comprehensive 5-anchor.

4 / 5

Distinctiveness Conflict Risk

The niche is sharply scoped to browser/preview/Electron export-download debugging with distinct triggers (createWritable, showSaveFilePicker, 0 KB files), giving minimal overlap risk with other skills.

5 / 5

Total

16

/

20

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
nexu-io/open-design
Reviewed

Table of Contents

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