{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "5760894d49c7e6ce4598c1a0b2c2d3b85001eff8051842fea102dbcad381091a",
  "signature": "jxzHLxyE5SGrTvBT9sTWd2HUUEtvK4DxkRtSA5Pj5cdL83N4kKk6q/RJVy+uid6BO2RyMtjcjwi8KTL7mbWaAw==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-10-08T16:24:34.581Z",
  "slug": "menu-engineer",
  "version": "1.0.0",
  "filename": "menu-engineer-agent-plugin.zip",
  "bytes": 3543,
  "content_digest": "ebd638d9452fe1d0f6875b371276821af6f8b34ada25f270159905a72b85d6ce",
  "content_signature": "xWI2wieJuLTZZYEaBM6CcL1eQbZBoEAuejYOJVVAX5e1fVvpvxth5sRcZZoRqH5zV4juP9TAT8AlNrSqyP64BQ==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "7e912350145c732d3642987def0d177d439ddce9993b5f3f8b48077a91e29f4a"
    },
    {
      "path": "skills/menu-engineer/SKILL.md",
      "sha256": "729986646fa3125aad3d0a09457f5b84fa5c4332772ee45dad4d5eddc0554bba"
    }
  ],
  "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]"
  }
}