{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "dd0fe92cc259a032d55f4792fe37f829136f70c04aec9ec0dd04a05ee25cf20f",
  "signature": "IOvMR09TPnpRn4Z5Uh7Lyl4+pfT7lwBUsZdyC41116QvVhRRj3R8O/lQUQzLwkO4WoqfajKDOoAKoen+u+W2Cg==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T00:27:59.421Z",
  "slug": "brand-style-guide-author",
  "version": "0.1.0",
  "filename": "brand-style-guide-author-agent-plugin.zip",
  "bytes": 3569,
  "content_digest": "f0db69b812798a340c2b8ff9c04bf43208b730391851dd2d9009aac8602e63fb",
  "content_signature": "u0hFuNLK6Hq9JaFrjmEbRqbm4ofrARYBY2k+MBJTUu6dZdsbPil4D4OWjK+avHJtz78L8AwvMVgevxS1p7NYBg==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "a7c0fe13d0d4c1ab9a66ba5c11449a996ebd1618a80f0ddfe13c8f97a21b4f2f"
    },
    {
      "path": "skills/brand-style-guide-author/SKILL.md",
      "sha256": "666c16387151050e8b866a7cd8c3ea5b55b7f5b1e055a889a3fd256e49221926"
    }
  ],
  "verify": {
    "public_key_url": "https://superagentskill.com/api/public/signing-key.pem",
    "instructions": "sha256 the downloaded .zip, compare with `sha256`, then verify the base64 `signature` as an Ed25519 signature over the ascii sha256 hex string using the public key. An extracted or repacked copy can still be verified via `content_digest` / `content_signature`. Helper: node scripts/verify-package-signature.mjs <file.zip> <signature.json> [public-key.pem]"
  }
}