{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "9664fa36e35608c9b0740636342f895a8a2e99bf0110103d7217289e797f11cc",
  "signature": "NWzxs1wwKIrla97csPXPiNmY2LO6euN4T3SbAkg+zuSJbGbnsyZ6//W83q/9uQUzatUX8tHtgQcsQ06pJN0EDg==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T00:49:22.897Z",
  "slug": "retail-store-cluster",
  "version": "0.1.0",
  "filename": "retail-store-cluster-agent-plugin.zip",
  "bytes": 3523,
  "content_digest": "d2f0e0be3d5ecd05873d98162544f941cef13d118c729c966e8f9102a6e8ab46",
  "content_signature": "9Zyx5c8ez4p63cs1D7vmh2UG3xFhOX1QkwKgR23n73ZtyON97k90USZQYeFLI3sAJLCIAhb5u7oStSXM6ad1Bw==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "fca2c730dec5acc955ab4e5b09460adcc51dd3ba190081d12d0d3568271a6c99"
    },
    {
      "path": "skills/retail-store-cluster/SKILL.md",
      "sha256": "903c624f7747a7cb6a246f428dc3053387ed8fc310974a45272888376cfc1e2c"
    }
  ],
  "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]"
  }
}