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computer-use

Use this skill when the user wants to automate desktop or browser tasks — clicking, typing, screenshotting, running GUI apps, or filling web forms.

Quality

77%

Does it follow best practices?

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SecuritybySnyk

Low

Low-risk findings worth noting

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tessl review fix ./external/anthropic-official/computer-use/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

61%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.

The body is well-structured and mostly actionable with runnable code and setup commands, but it duplicates tool documentation across two sections, pins dated model/tool versions without a deprecation note, and never spells out the screenshot→act→verify control loop that safe computer use requires.

Suggestions

Merge the "Tools Available" section and "Quick Reference" table into one section to remove duplication.

Add an explicit act→verify loop (screenshot, act, screenshot to confirm the result, retry/adjust on mismatch) as the core workflow.

Move pinned versions ("claude-opus-4-6", "computer_20241022", beta strings) into a clearly marked version/deprecation note so they don't decay silently.

DimensionReasoningScore

Conciseness

The "Tools Available" section and "Quick Reference" table duplicate each other (both list screenshot, click, and type inputs), and the body pins time-sensitive versions ("claude-opus-4-6", "computer_20241022", "betas=[\"computer-use-2024-10-22\"]") without a deprecated-patterns section, which the guidelines penalize. There is no concept padding, so it sits above the verbose anchors.

3 / 5

Actionability

Concrete, runnable guidance dominates: a complete Python client example, executable `docker run` and `Xvfb` setup commands, and concrete tool-call JSON. Placeholders like `"coordinate": [x, y]` are not copy-paste valid, keeping it below the fully-executable anchor.

4 / 5

Workflow Clarity

The only sequencing guidance is the comment "Start with a screenshot to understand current state"; no screenshot→act→verify feedback loop is laid out. Because the skill grants real system control (destructive-capable), the missing-validation guideline caps this at 3, though the implicit loop and safety checkpoints in Safety Notes keep it above the poor-sequence anchor.

3 / 5

Progressive Disclosure

Sections are well-organized (Overview, Tools Available, Usage Pattern, Setup Requirements, Safety Notes, Quick Reference) with no bundle files to navigate. At ~100 lines it exceeds the simple-skill threshold, and content such as the full API usage example could be split out, plus the redundant duplicate table is a minor organization gap.

4 / 5

Total

14

/

20

Passed

Description

83%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 description with an explicit "Use this skill when..." trigger clause and five concrete capability actions. It is held back only by minor coverage gaps (keyboard/scroll/bash actions) and a few missing natural synonyms.

Suggestions

Add trigger synonyms users naturally say, e.g. "control the computer", "use the mouse/keyboard", or "fill out forms".

Mention keyboard/scroll and terminal (bash) automation to round out capability coverage.

DimensionReasoningScore

Specificity

The description lists five concrete actions ("clicking, typing, screenshotting, running GUI apps, or filling web forms"), but the skill itself also covers key presses, scrolling, and bash execution, leaving minor gaps in coverage that keep it below the comprehensive anchor.

4 / 5

Completeness

It explicitly answers both what ("automate desktop or browser tasks — clicking, typing, screenshotting, running GUI apps, or filling web forms") and when ("Use this skill when the user wants to automate desktop or browser tasks") with concrete trigger phrases, matching the top anchor.

5 / 5

Trigger Term Quality

Natural user phrases like "automate desktop or browser tasks", "screenshotting", and "filling web forms" are present, but common synonyms such as "control the computer", "use the mouse/keyboard", or "fill out forms" are missing.

4 / 5

Distinctiveness Conflict Risk

Desktop/browser GUI automation is a distinct niche, but "filling web forms" creates minor overlap risk with web-scraping or browser-automation skills rather than the minimal conflict of the top anchor.

4 / 5

Total

17

/

20

Passed

Validation

93%

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

Validation — 15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

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

Warning

Total

15

/

16

Passed

Repository

ProwlrBot/prowlr-marketplace

Path

external/anthropic-official/computer-use/SKILL.md

Reviewed

Table of Contents

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