validate-skills

Validates skills in this repo against agentskills.io spec and Claude Code best practices. Use via /validate-skills command.

Install with Tessl CLI

npx tessl i github:callstackincubator/agent-skills --skill validate-skills

What are skills?

Review — 72%

Does it follow best practices?

If you maintain this skill, you can automatically optimize it using the tessl CLI to improve its score:

npx tessl skill review --optimize ./path/to/skill

Learn more

Validation — 10 / 11 Passed

Validation for skill structure

SKILL.md

Review

Evals

Evaluation results

100%

28%

Skill Repository Audit

Spec compliance validation

Criteria

Without context

With context

Name case check

100%

Leading hyphen check

100%

Directory mismatch check

100%

Valid skill passes

100%

Description length check

100%

Section header per skill

100%

PASS/FAIL prefix format

100%

Validation Results header

100%

Name format stated per check

100%

Optional fields not flagged

100%

Without context: $0.4277 · 2m 12s · 21 turns · 18 in / 8,278 out tokens

With context: $0.4117 · 1m 44s · 19 turns · 302 in / 6,623 out tokens

85%

Skill Quality Review Before Publishing

Best practices validation

Criteria

Without context

With context

First-person description flagged

100%

First-person body flagged

100%

Bare filenames flagged

100%

Redundant description flagged

100%

Valid skill passes best practices

50%

Section header per skill

100%

PASS/FAIL prefix format

20%

100%

Named check labels

100%

Body length not wrongly flagged

100%

Validation Results header

100%

Without context: $0.1751 · 48s · 8 turns · 11 in / 2,905 out tokens

With context: $0.3300 · 1m 34s · 11 turns · 262 in / 6,673 out tokens

100%

31%

Skills Registry Pre-Merge Validation

Reference depth and discovery

Criteria

Without context

With context

fd command used

100%

Nested reference chain flagged

75%

100%

Clean reference passes

100%

Uppercase name flagged

100%

All three skills reported

100%

PASS/FAIL prefix format

100%

Validation Results header

100%

Discovery log produced

100%

Valid skills pass spec checks

100%

Name check includes reason

100%

Without context: $0.4535 · 1m 47s · 21 turns · 26 in / 7,242 out tokens

With context: $0.6440 · 2m 50s · 29 turns · 187 in / 10,213 out tokens

Evaluated: 1 day ago
Agent: Claude Code

Table of Contents

Skill Repository Audit Skill Quality Review Before Publishing Skills Registry Pre-Merge Validation

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.