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Drive Chrome via the DevTools Protocol from JavaScript. Run JS snippets through the `browser-harness-js` CLI — it auto-spawns a long-lived bun HTTP server holding a fully-typed CDP `Session`, and every call (`browser-harness-js 'await session.Page.navigate(...)'`) executes against the same persistent connection. Session, active target, and globals survive across calls. Use when the user wants to automate, script, or inspect a Chrome browser via CDP — single tab or multi-tab, attach to existing Chrome or to a new one launched with --remote-debugging-port.

80

Quality

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SKILL.md
Quality
Evals
Security

Quality

Content

100%Weight 40%Scale 1-3

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

A well-structured, action-dense skill body with executable examples, clear multi-step attach workflows with error-recovery checkpoints, and appropriate progressive disclosure that defers the large generated SDK to an out-of-line file. It assumes Claude's intelligence and avoids explanatory padding.

DimensionReasoningScore

Conciseness

Lean and assumes Claude's competence — no padding explaining what CDP or the DevTools Protocol is; every section delivers operational content. The timeout rationale (~100ms vs 5s) is borderline explanatory but drives a real decision, so it earns its place.

3 / 3

Actionability

Fully executable bash and JS snippets throughout — connect, navigate, evaluate, multi-line heredoc, events — plus concrete CLI command table and env vars. Copy-paste ready.

3 / 3

Workflow Clarity

The 'Connecting to a running Chrome' section is a numbered sequence with explicit validation/error checkpoints: try auto-detect → branch on the specific error string → instruct the user → retry or bump timeoutMs. Feedback loop for a fragile attach operation is present.

3 / 3

Progressive Disclosure

Well-signaled one-level-deep reference to sdk/generated.ts (~655 KB, 'only loaded if you read it') keeps the heavy typed surface out of the overview, and a 'Files' section maps the bundle structure for navigation. No nested reference chains.

3 / 3

Total

12

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12

Passed

Description

100%Weight 40%Scale 1-3

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, specific description that names concrete capabilities and gives explicit 'Use when' trigger guidance with natural user keywords. It is concise despite its length and clearly scoped to CDP browser automation.

DimensionReasoningScore

Specificity

Lists multiple concrete actions — 'Drive Chrome via the DevTools Protocol from JavaScript', 'Run JS snippets through the browser-harness-js CLI', 'auto-spawns a long-lived bun HTTP server', persistent connection surviving across calls — rather than vague language.

3 / 3

Completeness

Explicitly answers both what ('Drive Chrome via the DevTools Protocol... Run JS snippets through the browser-harness-js CLI') and when ('Use when the user wants to automate, script, or inspect a Chrome browser via CDP').

3 / 3

Trigger Term Quality

Natural user-facing terms are well covered: 'automate, script, or inspect a Chrome browser via CDP', 'Chrome', 'DevTools Protocol', 'CDP', 'single tab or multi-tab'. A user wanting CDP automation would plausibly say these.

3 / 3

Distinctiveness Conflict Risk

Clear niche — CDP/Chrome automation through a specific CLI — with distinct triggers unlikely to overlap with other skills.

3 / 3

Total

12

/

12

Passed

Validation

100%

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

Validation16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository
browser-use/browser-harness-js
Reviewed

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