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positron-demo-video

Use when the user wants to create a demo video, record a feature walkthrough, or generate a video for a PR description. Triggers on "record a demo", "make a video", "demo video for PR", or "generate a walkthrough".

Quality

90%

Does it follow best practices?

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SecuritybySnyk

Passed

No findings from the security scan

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.

An excellent, highly actionable skill body: every step is executable, the workflow is clearly sequenced with explicit validation and feedback loops, and detail is correctly offloaded to a well-signaled reference file. The only flaw is minor redundancy (duplicated MP4/size-limit guidance) that slightly inflates token cost.

DimensionReasoningScore

Conciseness

The body is dense with project-specific, non-inferable failure modes (the libzmq/--detached behavior, the sentinel trim frame, Playwright's separate ffmpeg) and assumes Claude's competence, but the MP4/GitHub size-limit guidance is stated twice (Phase 4 and Video Output) and a few passages could be tightened.

4 / 5

Actionability

Guidance is fully executable: exact commands ("npm run demo:record", "npx playwright install ffmpeg"), concrete file paths, named helper functions, and a copy-paste-ready subagent prompt with complete ffprobe/ffmpeg invocations.

5 / 5

Workflow Clarity

Six explicitly sequenced phases (Research -> Propose -> Iterate -> Record -> Verify -> Iterate) with an approval checkpoint ("Keep presenting the updated script until the user approves"), a dedicated verification phase, and feedback loops routing each change type back to the correct phase.

5 / 5

Progressive Disclosure

The body stays a workflow overview while code patterns and failure-mode rationale are appropriately split into a real, one-level-deep bundle file ("See `references/demo-patterns.md` for code patterns"), clearly signaled at both point-of-use and in the Technical Reference section.

5 / 5

Total

19

/

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 that clearly states what the skill does and when to use it, backed by concrete, natural trigger phrases. Its only weaknesses are incomplete capability coverage and a couple of missing trigger synonyms, plus a slightly generic trigger that could overlap with general video skills.

Suggestions

Add trigger synonyms such as "screencast" or "screen recording" to broaden natural keyword coverage.

Name the domain or toolchain (e.g., Positron feature demos recorded via Playwright) in the description to reduce overlap risk with generic video-generation skills.

DimensionReasoningScore

Specificity

Lists several concrete actions ("create a demo video", "record a feature walkthrough", "generate a video for a PR description") but omits parts of the capability like post-processing and verification, so coverage has minor gaps rather than being comprehensive.

4 / 5

Completeness

Explicitly answers both what ("create a demo video... or generate a video for a PR description") and when, with an explicit "Use when..." clause plus concrete trigger phrases, matching the top anchor exactly.

5 / 5

Trigger Term Quality

Includes natural phrases users would say ("record a demo", "make a video", "demo video for PR", "generate a walkthrough") with good coverage, but misses common variations such as "screencast" or "screen recording".

4 / 5

Distinctiveness Conflict Risk

Triggers like "demo video for PR" and "generate a walkthrough" carve a fairly distinct niche, but "make a video" is generic and the description never names Positron or the recording toolchain, leaving minor overlap risk with a generic video-creation skill.

4 / 5

Total

17

/

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

posit-dev/positron

Path

.claude/skills/positron-demo-video/SKILL.md

Reviewed

Table of Contents

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