browser-extension-control

Create, inspect, install, and safely maintain Chrome extensions for Agent Zero's built-in Browser plugin. Use when the user asks to build a browser extension, modify an existing extension, install a Chrome Web Store extension, or review extension permissions.

Quality

92%

Does it follow best practices?

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Adds up to 20 points to the overall score

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Securityby

Low

Low-risk findings worth noting

Quality

Content

85%

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

A tight, actionable instruction skill: complete manifest examples, concrete filesystem paths, sequenced workflows with validation gates, and a review checklist. The only slack is minor redundancy with the frontmatter and a few safety sentences that could be trimmed.

Suggestions

Drop or shorten the opening 'Use this skill when...' sentence since the frontmatter description already states the trigger; lead instead with the Operating Model.

Tighten the Safety First intro paragraph to the essential risk statement and let the bullet list carry the guidance.

Add an explicit validate-then-fix-retry loop after 'Validate JSON syntax' (e.g. 'if it fails, fix and re-validate before proceeding') to make the error-recovery feedback loop concrete.

Dimension	Reasoning	Score
Conciseness	Mostly lean and it assumes Chrome/manifest competence, but the opening 'Use this skill when...' line restates the frontmatter trigger and the Safety First intro paragraph could be tightened, so not every token earns its place.	2 / 3
Actionability	Provides concrete paths ('/a0/usr/browser-extensions/<slug>/manifest.json'), two complete copy-paste manifest JSON examples, and explicit Chrome Web Store URL shapes — fully executable guidance.	3 / 3
Workflow Clarity	Create and Install flows are clearly numbered with explicit checkpoints (validate JSON syntax, inspect manifest, enable only after the user accepts risk) plus a Review Checklist, matching the clear-sequence-with-validation anchor.	3 / 3
Progressive Disclosure	Single, well-organized file with clearly labeled sections and no nested references; no content here needs splitting into separate bundle files, so the structure navigates cleanly.	3 / 3
	Total	11 / 12 Passed

Description

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.

A well-crafted description: third-person voice, concrete capabilities, an explicit Use-when trigger with natural phrasing, and a tightly scoped niche. It hits the top anchor on every dimension.

Dimension	Reasoning	Score
Specificity	Lists four concrete actions — 'Create, inspect, install, and safely maintain Chrome extensions' — matching the multiple-specific-actions anchor rather than the single-domain anchor at 2.	3 / 3
Completeness	Explicitly answers both what ('Create, inspect, install, and safely maintain...') and when ('Use when the user asks to build...'), satisfying the 3 anchor and avoiding the cap for a missing 'Use when' clause.	3 / 3
Trigger Term Quality	'build a browser extension, modify an existing extension, install a Chrome Web Store extension, or review extension permissions' are natural phrases a user would say, with good variation; not jargon-only like the 1 anchor.	3 / 3
Distinctiveness Conflict Risk	Scoped to 'Chrome extensions for Agent Zero's built-in Browser plugin' — a clear niche with distinct triggers unlikely to fire for unrelated skills.	3 / 3
	Total	12 / 12 Passed

Validation

100%

Warnings & errors only

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

Validation — 16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository: agent0ai/agent-zero
Path: plugins/_browser/skills/browser-extension-control/SKILL.md
Commit: 391fab9

Reviewed: 4 days ago

Table of Contents

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