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Author a TanStack Table v9 feature plugin across every FeatureMap and API installation surface: state, options, column definitions, table, column, row, cell, header, row-model functions/caches, defaults, prototypes, and table/row/column instance data lifecycles. Load for initTableInstanceData, resetTableInstanceData, constructTableAPIs, or reusable behavior not covered by built-ins, meta, or option composition.

66

Quality

80%

Does it follow best practices?

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SKILL.md
Quality
Evals
Security

Quality

Content

76%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 highly actionable with an executable full example and lean reference material, but it reads as structured reference rather than a sequenced workflow with validation checkpoints. Progressive disclosure is good despite the absence of bundle files.

Suggestions

Add a short numbered build sequence (declare-merge maps → install table/prototype APIs → init instance data → reset wiring) with an explicit verification checkpoint (e.g., 'confirm every merged API has a runtime assign* call') to raise workflow clarity above 3.

Extract the ~145-line Complete Example into a referenced file (e.g., references/density-feature.ts) and keep a trimmed skeleton inline, so SKILL.md reads as an overview pointing one level deep.

De-duplicate the guardrails against the example by keeping only the non-obvious invariants (lifecycle ordering, no ad-hoc instance mutation) and dropping rules the code already demonstrates.

DimensionReasoningScore

Conciseness

The body is dense and assumes Claude's competence without explaining basic TanStack/Table concepts, but the guardrails slightly restate behavior already shown in the complete example, leaving minor trimming opportunities.

4 / 5

Actionability

The Complete Example is a full, copy-paste-ready TypeScript feature plugin exercising every ordinary FeatureMap and API installation path, covering the common case end-to-end.

5 / 5

Workflow Clarity

Lifecycle ordering and the example imply a sequence (merge types, install APIs, init instance data), but there are no numbered procedural steps or explicit validation checkpoints; the guardrails are principles rather than validate-then-proceed gates.

3 / 5

Progressive Disclosure

Content is well-organized into clear sections (Extension Surface, Lifecycle, Complete Example, Guardrails, API Discovery) with no nested references, but no bundle files exist and the large inline complete example could be split out to tighten the overview.

4 / 5

Total

16

/

20

Passed

Description

85%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, distinct, and explicitly answers both what and when with concrete triggers, though its trigger terms lean on technical API names rather than natural user phrasing. It uses appropriate third-person imperative voice throughout.

DimensionReasoningScore

Specificity

It enumerates a comprehensive set of concrete extension surfaces — state, options, column definitions, table, column, row, cell, header, row-model functions/caches, defaults, prototypes — matching the 'multiple specific concrete actions; comprehensive coverage' anchor.

5 / 5

Completeness

It explicitly states what ('Author a TanStack Table v9 feature plugin across every FeatureMap and API installation surface') and when ('Load for initTableInstanceData, resetTableInstanceData, constructTableAPIs, or reusable behavior not covered by built-ins, meta, or option composition') with concrete trigger phrases.

5 / 5

Trigger Term Quality

Trigger terms are relevant but heavily technical API names (initTableInstanceData, resetTableInstanceData, constructTableAPIs) with some natural framing ('reusable behavior not covered by built-ins, meta, or option composition'), missing common synonyms a user would naturally voice.

3 / 5

Distinctiveness Conflict Risk

The niche is tightly scoped to TanStack Table v9 feature-plugin authoring with distinct FeatureMap/hook triggers, giving it minimal overlap risk with other skills.

5 / 5

Total

18

/

20

Passed

Validation

87%

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

Validation14 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

metadata_version

'metadata.version' is missing

Warning

frontmatter_unknown_keys

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

Warning

Total

14

/

16

Passed

Repository
TanStack/table
Reviewed

Table of Contents

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