{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "1c12df960d8925c42802c881c9ef8d7a8b63be6a2b7c080165b0214f1022eef2",
  "signature": "arZpEQdQjaXhkMogNCUJFCBx5SI13EX7pkSon8UGeHDuJ2TB7a1wepD0IegVXBjKrDyOHKoIGGpm/Psxhd3sCw==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T01:32:00.941Z",
  "slug": "design-md-author",
  "version": "0.1.0",
  "filename": "design-md-author-agent-plugin.zip",
  "bytes": 6824,
  "content_digest": "5952d00b55e999260ba9d4546bad701485371b6af0077fd16b68dbf8387504cb",
  "content_signature": "AcSl4CyFSTUGw/5xKg+YYmom3bzT+ccfCmVcQmjv0aHgsGXU1iscU2RaariTcVXV2JbQpJpdYEg43SJsK4WqBQ==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "bb53e8fe266d8628d6b92536c0b4d77e18324e5bede9c2da409d5f1d88b67253"
    },
    {
      "path": "skills/design-md-author/SKILL.md",
      "sha256": "df293e85e0e7b8d310095992df983dc14891fe3e10f6dd6b378209a21f50eca4"
    },
    {
      "path": "skills/design-md-author/references/examples.md",
      "sha256": "5bd6f0970f5dbfc4daee6665364c98dc5ce07aafceccfe674f2c3a15c7135733"
    }
  ],
  "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]"
  }
}