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canvas-capture-extension

Rebuild, install, and reload the private Remotion Canvas Capture unpacked Chrome extension. Use when the extension needs to be restored after a Codex worktree was deleted, rebuilt after source changes, moved to its durable install directory, or reloaded in Chrome or Chrome Canary.

Quality

89%

Does it follow best practices?

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SecuritybySnyk

Passed

No findings from the security scan

SKILL.md
Quality
Evals
Security

Quality

Content

86%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 lean, highly actionable operational skill: exact commands, absolute paths, branching recovery flows, and a well-integrated bundle script. The only weaknesses are repeated version/path guardrails that could be consolidated and a missing verification step after the Chrome reload flow.

DimensionReasoningScore

Conciseness

The body is dense and procedural with no concept padding, but "Chrome 157.0.8080.0 or newer" is stated three times and the durable-directory guidance repeats across sections — minor trimmable instances that keep it below the every-token-earns-its-place anchor.

4 / 5

Actionability

Fully executable throughout: exact script path with arguments, absolute install/dev directories, `bun run dev`, env vars with example values, a post-install file checklist, and exact launch flags plus an explicit anti-pattern ("Do not add --enable-blink-features=CanvasDrawElement"). The referenced rebuild script exists in the bundle and matches its description.

5 / 5

Workflow Clarity

All three workflows use numbered sequences, the reload flow branches on the broken-worktree error case, and the install flow has an explicit validation checklist ("Confirm that the installed directory contains manifest.json, background.js..."); missing only a post-reload verification step, so it sits at the most-checkpoints anchor rather than the top.

4 / 5

Progressive Disclosure

One clearly signaled, one-level-deep reference to scripts/rebuild-extension.sh (verified to exist and behave as described), with build/install logic properly delegated to it and environment-specific operational knowledge kept in well-organized sections — clear, easy navigation with nothing inlined that belongs elsewhere.

5 / 5

Total

18

/

20

Passed

Description

87%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: imperative voice, concrete actions, and an explicit multi-scenario "Use when" clause with low conflict risk. Only minor gaps in capability coverage and trigger synonym variation keep specificity and trigger-term quality at 4.

DimensionReasoningScore

Specificity

"Rebuild, install, and reload the private Remotion Canvas Capture unpacked Chrome extension" lists three concrete actions on a named artifact, matching the several-specific-actions anchor; not 5 because the dev-workflow and shot-preparation capabilities in the body go unmentioned.

4 / 5

Completeness

Explicitly answers what ("Rebuild, install, and reload... the unpacked Chrome extension") and when via a "Use when..." clause enumerating four concrete trigger scenarios (worktree deleted, source changes, move to durable directory, reload in Chrome/Canary), matching the top anchor.

5 / 5

Trigger Term Quality

Natural terms like "rebuild", "reload", "Chrome", "Chrome Canary", and "worktree was deleted" cover the phrases a user would say, though a few variations (e.g., "load unpacked", "extension broken/missing") are absent.

4 / 5

Distinctiveness Conflict Risk

"private Remotion Canvas Capture unpacked Chrome extension" carves out a clear niche with distinct triggers; virtually no other skill would collide with these terms.

5 / 5

Total

18

/

20

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.

Validation — 16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository

remotion-dev/remotion

Path

.agents/skills/canvas-capture-extension/SKILL.md

Reviewed

Table of Contents

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