Agent skill · Security

ev-certificate-validator

Validate EV code signing certificate chain and timestamp for Windows SmartScreen

a5c-aigithub.com/a5c-aiGitHub ↗
claude-codecodexcan modify filesMIT
Install
npx skills add a5c-ai/babysitter --skill ev-certificate-validator --agent claude-code

Same command for any agent — swap --agent for codex, cursor, copilot.

Facts
Files in the skill folder: 2
SKILL.md size: 1 KB
Bundled scripts: none
Allowed tools: ReadGrepBash
Path: library/specializations/desktop-development/skills/ev-certificate-validator/SKILL.md
Open the folder on GitHub →
Where it comes from
Stars: 1,642
Language: JavaScript

Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.

From the SKILL.md

# ev-certificate-validator Validate EV (Extended Validation) code signing certificate chain and timestamp to ensure Windows SmartScreen compatibility. ## Capabilities - Verify certificate chain validity - Check timestamp presence and validity - Validate EV certificate attributes - Check certificate expiration - Verify signature algorithm strength - Validate publisher information ## Input Schema ```json { "type": "object", "properties": { "signedFile": { "type": "string" }, "checkSmartScreen": { "type": "boolean", "default": true } }, "required": ["signedFile"] } ``` ## Validation Commands ```powershell # Verify signature with chain signtool verify /pa /all /v signed.exe # Check certificate details certutil -dump signed.exe # Verify timestamp signtool verify /pa /tw signed.exe ``` ## Related Skills - `windows-authenticode-signer` - `code-signing-setup` process

What's inside
Steps it walks through
  1. Capabilities
  2. Input Schema
  3. Validation Commands
  4. Related Skills
Ships with 1 file
  • README.md
More from babysitter
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About this skill
What does the ev-certificate-validator skill do?

Validate EV code signing certificate chain and timestamp for Windows SmartScreen

How do I install it?

Run `npx skills add a5c-ai/babysitter --skill ev-certificate-validator --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.

Where does this skill come from?

From a5c-ai/babysitter, a repository with 1,642 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.

Is a popular skill a good skill?

Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.

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