Agent-Skills.md

Agent Skills: ev-certificate-validator

Validate EV code signing certificate chain and timestamp for Windows SmartScreen

UncategorizedID: a5c-ai/babysitter/ev-certificate-validator

Repository

a5c-ai/babysitter
a5c-aiLicense: MIT
244

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pnpm dlx add-skill https://github.com/a5c-ai/babysitter/tree/HEAD/plugins/babysitter/skills/babysit/process/specializations/desktop-development/skills/ev-certificate-validator

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plugins/babysitter/skills/babysit/process/specializations/desktop-development/skills/ev-certificate-validator/SKILL.md

Skill Metadata

Name
ev-certificate-validator
Description
Validate EV code signing certificate chain and timestamp for Windows SmartScreen

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

{
  "type": "object",
  "properties": {
    "signedFile": { "type": "string" },
    "checkSmartScreen": { "type": "boolean", "default": true }
  },
  "required": ["signedFile"]
}

Validation Commands

# 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