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dev-browser

Browser automation with persistent page state. Use when users ask to navigate websites, fill forms, take screenshots, extract web data, test web apps, or automate browser workflows. Trigger phrases include "go to [url]", "click on", "fill out the form", "take a screenshot", "scrape", "automate", "test the website", "log into", or any browser interaction request.

Install with Tessl CLI

npx tessl i github:numman-ali/n-skills --skill dev-browser
What are skills?

Overall
score

99%

Does it follow best practices?

Validation for skill structure

SKILL.md
Review
Evals

Discovery

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.

This is an excellent skill description that hits all the marks. It uses third person voice, provides specific concrete actions, includes comprehensive natural trigger phrases users would actually say, and clearly distinguishes itself as a browser automation skill with explicit 'Use when' guidance.

DimensionReasoningScore

Specificity

Lists multiple specific concrete actions: 'navigate websites, fill forms, take screenshots, extract web data, test web apps, automate browser workflows' - these are clear, actionable capabilities.

3 / 3

Completeness

Clearly answers both what ('Browser automation with persistent page state' plus specific actions) and when (explicit 'Use when...' clause with detailed trigger phrases and scenarios).

3 / 3

Trigger Term Quality

Excellent coverage of natural trigger phrases users would actually say: 'go to [url]', 'click on', 'fill out the form', 'take a screenshot', 'scrape', 'automate', 'test the website', 'log into'. These match real user language patterns.

3 / 3

Distinctiveness Conflict Risk

Clear niche focused on browser automation with distinct triggers like 'go to [url]', 'click on', 'scrape', 'log into'. The 'persistent page state' qualifier and browser-specific terminology make it unlikely to conflict with other skills.

3 / 3

Total

12

/

12

Passed

Implementation

100%

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

This is an excellent skill file that demonstrates best practices across all dimensions. It provides concrete, executable examples while maintaining brevity, includes clear workflow patterns with validation checkpoints, and appropriately delegates detailed scraping guidance to a reference file. The content respects Claude's intelligence while providing the specific, project-relevant information needed for browser automation.

DimensionReasoningScore

Conciseness

The content is lean and efficient, assuming Claude's competence with Playwright and TypeScript. No unnecessary explanations of basic concepts; every section provides actionable information without padding.

3 / 3

Actionability

Provides fully executable code examples throughout, including complete heredoc scripts, API usage patterns, and copy-paste ready snippets. The TypeScript vs browser context warning includes concrete correct/incorrect examples.

3 / 3

Workflow Clarity

Clear workflow loop pattern (write → run → evaluate → decide → repeat) with explicit validation steps. Setup instructions include waiting for ready messages before proceeding. Error recovery section provides debugging workflow.

3 / 3

Progressive Disclosure

Well-structured overview with clear sections. Appropriately references external file (references/scraping.md) for advanced scraping guide. Content is organized for quick scanning with headers, code blocks, and bullet points.

3 / 3

Total

12

/

12

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' field is not a dictionary

Warning

license_field

'license' field is missing

Warning

Total

14

/

16

Passed

Reviewed

Table of Contents

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.