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BC percy-migration-skill

Migrate visual regression testing from BrowserStack Percy (web, Percy on Automate, App Percy, Storybook, static snapshots, uploads) to TestMu AI SmartUI in any language or framework: Playwright, Cypress, Selenium (JS, Python, Java, C#, Ruby), Puppeteer, WebdriverIO, TestCafe, Capybara, Appium, Storybook. Use whenever someone wants to move from Percy to SmartUI or LambdaTest, mentions @percy/cli, percy exec, percySnapshot, percyScreenshot, PERCY_TOKEN, .percy.yml, App Percy or Percy baselines, or asks for the SmartUI equivalent of a Percy command, option or SDK call.

LambdaTest/agent-skills Agent Skills author: LambdaTest 4 files body ≈ 1 890 tokens Open the sourcegithub.com↗ analyzed 34 h ago

Migrate visual regression testing from BrowserStack Percy (web, Percy on Automate, App Percy, Storybook, static snapshots, uploads) to TestMu AI SmartUI in…

As a process C 53/100 · Has gaps — References files that are not bundled: ../shared/testmu-cloud-reference.md

ProcedurePlaywrightSoftware developmentData and analyticstype and topics are labelled automatically from the skill text
Runs in: Claude / Claude Code ChatGPT / Codex Gemini CLI Cursor GitHub Copilot / VS Code Qwen Code Kimi Code CLI Z.ai (GLM) DeepSeek (Deep Code) Mistral Vibe LangChain (deepagents) OpenClaw Goose OpenCode
JSON
Technical rating
B
92/100
safety, quality, tests
Safety 60%
100
Quality 40%
80
Run on models
none yet
Process rating
C
53/100
Has gaps
References files that are not bundled: ../shared/testmu-cloud-reference.md
Tools and files w 18
0
Inputs and preconditions w 11
0
Running it twice w 4
30
the three weakest of ten parameters · all ten

How to improve

  1. The text references files that are not there: add them or drop the references.
For the model run — optional
  • Your own cases (evals/evals.json, 4–6 real requests with expected answers): the full check would then run those instead of a model-drafted suite.
  • A spec.yaml with trigger phrases and assertions — a behaviour contract for CI; `skilltest init` writes a template.

Guard findings · 0

✓ No critical or high findings

Files scanned: 4. Evidence is masked. Grey chips explain why severity was lowered.

Against the Agent Skills spec

  • warning missing-ref reference to a missing file: ../shared/testmu-cloud-reference.md
  • note frontmatter-key unknown frontmatter key "languages"

Process rating: all ten parameters 53/100

Will not run. References files that are not bundled: ../shared/testmu-cloud-reference.md
  • 0Tools and files. 1 referenced file(s) missing: ../shared/testmu-cloud-reference.md
  • 0Inputs and preconditions. Does not say what the process needs to start
  • 30Running it twice. 10 mutating operations with no state check
  • 60Result and completion. Output format stated, no completion criterion
  • 65Failures and branches. 3 branches
  • 70When it triggers. States when to use, but not when not to
  • 85Steps. 21 steps, 1 vague phrases
  • 100Consistency. Name and required fields are in place
  • 100Execution cost. Instruction body is 1890 tokens
  • 100Progress reporting. Reports progress
  • high The skill tells the model to perform an irreversible action with no human approval
  • low The response is described with custom markup (3 tags): a typed call is more reliable

Everything here is measured from the skill text rather than judged by a model, so the numbers are checkable. A parameter weighs more when it is a more common reason for the process to stall.

Quality signals

  • +5Description has no quoted example phrases that should trigger the skill
  • +4Description does not say when NOT to use the skill (false activations)
  • -5TODO / placeholder text left in the skill
  • +2Single-language instructions
  • +3Description length 572: enough signal without eating the budget
  • +4Structure: 11 headings
  • +3Step-by-step instructions: 21 items
  • +3Output format is stated explicitly
  • +4Has examples (1 code blocks)
  • +4Reference files are cited in the instructions (3 of 3)
  • +1License stated

Quality base 70; lint remarks subtract, signals add up to 100. Result: 80.