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app-builder

Main application building orchestrator. Creates full-stack applications from natural language requests. Determines project type, selects tech stack, coordinates agents.

52

Quality

60%

Does it follow best practices?

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Adds up to 20 points to the overall score

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SecuritybySnyk

Medium

Suggest reviewing before use

Fix and improve this skill with Tessl

tessl review fix ./skills/antigravity-app-builder/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

65%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 well-organized and reasonably actionable for an orchestrator skill, but its multi-step workflow lacks explicit validation checkpoints and the many referenced bundle files are missing from the actual skill bundle.

Suggestions

Add the referenced bundle files (project-detection.md, tech-stack.md, agent-coordination.md, scaffolding.md, feature-building.md, templates/SKILL.md, and the per-template TEMPLATE.md files) or remove the references.

Promote the illustrative usage example into a real workflow with explicit validation checkpoints between planning, agent coordination, and preview.

Reconcile the 'Templates (13)' header with the 12 templates actually listed.

DimensionReasoningScore

Conciseness

Largely lean and table-driven with a content map and template index that assume Claude's competence; only minor filler ('This skill is applicable to execute the workflow...') could be trimmed, matching the score-4 anchor.

4 / 5

Actionability

Provides concrete guidance via the content map (which file to read when), the template table, the agent-coordination table, and a worked usage example, with only minor gaps in executable specificity.

4 / 5

Workflow Clarity

A six-step sequence appears in the usage example but it is illustrative rather than a validated workflow, and the multi-agent coordination lacks explicit validation/checkpoint steps (only the Limitations stop-and-ask check is present).

3 / 5

Progressive Disclosure

Structure and one-level-deep navigation are well signaled (content map + template links), but the referenced bundle files (project-detection.md, tech-stack.md, templates/*) do not exist in the bundle, so the disclosure is advertised rather than actually backed by files.

3 / 5

Total

14

/

20

Passed

Description

55%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 states concrete capabilities in third person but omits any explicit 'Use when...' trigger guidance, which caps its completeness. Trigger terms are domain-relevant yet lack the natural synonyms users would actually say.

Suggestions

Append an explicit trigger clause, e.g. 'Use when the user asks to build, scaffold, or generate a full application from a natural-language description.'

Add natural user phrasings and synonyms (e.g. 'build an app', 'make a website', 'scaffold a project') alongside the domain terms.

Narrow 'full-stack applications' or add distinguishing context to reduce overlap with generic scaffolding skills.

DimensionReasoningScore

Specificity

Lists several concrete actions — 'Creates full-stack applications', 'Determines project type', 'selects tech stack', 'coordinates agents' — with only minor coverage gaps, matching the score-4 anchor.

4 / 5

Completeness

The 'what' is clear, but there is no explicit 'Use when...' trigger clause; per the rubric guideline a missing explicit trigger caps completeness at 3.

3 / 5

Trigger Term Quality

Contains relevant terms like 'full-stack applications', 'natural language requests', and 'tech stack', but misses common natural phrasings and synonyms a user would actually say (e.g. 'build an app', 'make a website').

3 / 5

Distinctiveness Conflict Risk

'Application building orchestrator' carves a recognizable niche, but 'full-stack applications' is broad and overlaps with many scaffolding/build skills, leaving moderate conflict risk.

3 / 5

Total

13

/

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

frontmatter_unknown_keys

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

Warning

relative_links

Relative link issues: 12 missing, 12 deeper-than-1-level

Warning

Total

14

/

16

Passed

Repository
boisenoise/skills-collections
Reviewed

Table of Contents

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