{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "818c0420317e52c7b7ce6a183c4357877691be7a1cd4e47327fa9a9413c96e8c",
  "signature": "4EahoqVZ5iBIot9fbBj1NhrwWm0cEg03UfgFDKwNR2rcWIVjuK+z8uQqF/RZcoIkPJo85WxYL+ITCYWOdu4sAA==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T01:32:33.430Z",
  "slug": "survey-designer",
  "version": "0.1.0",
  "filename": "survey-designer-agent-plugin.zip",
  "bytes": 3451,
  "content_digest": "3bbfe907ebc3364f9ec506b581b600083dfd4df7e8df4e1542c27862cce0d443",
  "content_signature": "YiW7W5tfqUtIHjHijyny33+6XohWRB92RvrlDRKMfOMuS/hTJKFD9RrE/shr9OB6EF7Xmk0OBzuVyGdN/f43AQ==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "81e091fd1c5708f6819df894f14ee0e5c9eeee11c9799e99f9324f549cd97894"
    },
    {
      "path": "skills/survey-designer/SKILL.md",
      "sha256": "34213293fae7f3f37d212fc72e378080f23598631d2f2d5978bce77691fcc98b"
    }
  ],
  "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]"
  }
}