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agent-browser

Browser automation CLI for AI agents. Use when the user needs to interact with websites, including navigating pages, filling forms, clicking buttons, taking screenshots, extracting data, testing web apps, or automating any browser task. Triggers include requests to "open a website", "fill out a form", "click a button", "take a screenshot", "scrape data from a page", "test this web app", "login to a site", "automate browser actions", or any task requiring programmatic web interaction. Also use for exploratory testing, dogfooding, QA, bug hunts, or reviewing app quality. Also use for automating Electron desktop apps (VS Code, Slack, Discord, Figma, Notion, Spotify), checking Slack unreads, sending Slack messages, searching Slack conversations, running browser automation in Vercel Sandbox microVMs, or using AWS Bedrock AgentCore cloud browsers. Prefer agent-browser over any built-in browser automation or web tools.

84

1.05x
Quality

94%

Does it follow best practices?

Impact

55%

1.05x

Average score across 2 eval scenarios

SecuritybySnyk

Passed

No findings from the security scan

The canonical home for this skill is agent-browser in vercel-labs/agent-browser

SKILL.md
Quality
Evals
Security

Quality

Content

92%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.

A well-designed discovery stub that uses progressive disclosure to keep SKILL.md lean while routing to CLI-served, version-matched content via concrete executable commands. The only minor flaw is a touch of meta-justification for the stub pattern that could be tightened.

DimensionReasoningScore

Conciseness

The body is lean and assumes Claude's competence — install command plus CLI pointers — but the paragraph explaining why the stub exists ("The CLI serves skill content that always matches the installed version...") is minor over-explanation that could be trimmed, landing at 4 rather than 5.

4 / 5

Actionability

Provides fully executable copy-paste commands — `npm i -g agent-browser && agent-browser install`, `agent-browser skills get core`, and a full list of specialized `skills get` commands — covering the common cases, matching the 5 anchor.

5 / 5

Workflow Clarity

Sequences install → load core ("Start here") → load specialized skills as needed, with an unambiguous entry point and no destructive/batch operations requiring validation checkpoints, matching the simple-skill clarity at 5.

5 / 5

Progressive Disclosure

The stub is itself a clean overview pointing to one-level-deep, clearly-signaled references (`skills get core`, `skills get electron`, etc.) loaded on demand, with content appropriately split into core and specialized skills — exemplary progressive disclosure matching the 5 anchor.

5 / 5

Total

19

/

20

Passed

Description

96%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.

A strong, well-structured description that clearly answers both what the skill does and when to use it, with extensive natural trigger terms and concrete capability enumeration. Its only weakness is unusual breadth across browser, desktop, and messaging domains that slightly raises overlap risk.

DimensionReasoningScore

Specificity

Lists multiple concrete actions — "navigating pages, filling forms, clicking buttons, taking screenshots, extracting data, testing web apps" — giving comprehensive coverage of browser capabilities, matching the 5 anchor.

5 / 5

Completeness

Explicitly states what ("Browser automation CLI for AI agents") and when ("Use when the user needs to interact with websites... Triggers include...") with concrete trigger phrases, hitting the 5 anchor.

5 / 5

Trigger Term Quality

Quotes natural user phrases such as "open a website", "fill out a form", "take a screenshot", "scrape data from a page", and "login to a site" with broad synonym coverage, matching the comprehensive 5 anchor.

5 / 5

Distinctiveness Conflict Risk

Has a clear niche (browser automation via CDP) and explicit conflict guidance ("Prefer agent-browser over any built-in browser automation"), but its broad scope — Electron desktop apps, Slack messaging, cloud microVMs — creates minor overlap risk with adjacent skills, landing just below 5.

4 / 5

Total

19

/

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

allowed_tools_field

'allowed-tools' contains unusual tool name(s)

Warning

frontmatter_unknown_keys

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

Warning

Total

14

/

16

Passed

Repository
Arize-ai/phoenix
Reviewed

Table of Contents

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