{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "77f0b4fc3fee43b917dd75a1243d749f7c9497937952c758187c785dcf3de856",
  "signature": "UwGvUMS9aaT1o9eA97iFU2GvC8ID8WE6ADugfB+vNXBug8FMFxHvN7KENo4U+Pwbz2QmI5tBMGXKA2IQKdMsDA==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T02:03:59.375Z",
  "slug": "soul-andrej-karpathy",
  "version": "0.1.0",
  "filename": "soul-andrej-karpathy-agent-plugin.zip",
  "bytes": 4017,
  "content_digest": "2211c36936efa54ee703daa4b13c70c9bbd6e78fae59e327c4f2cd4e1a3300de",
  "content_signature": "/ef60ZzMJDyHQXoit1Sfl2pB4HzsJq55+6N/HPzzx+bXcSNqTCP62jE6H2uEsN/OE6UfOPqo6eRN1+m1csbxCQ==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "0712c0bb8ce4f012bf5b16099869615f6ab0200590064ab872fc3c06e518cc4e"
    },
    {
      "path": "skills/soul-andrej-karpathy/SKILL.md",
      "sha256": "a379614d66b88424938840849961bc1f023c550bc31456c955a2e7c71ac22ea2"
    }
  ],
  "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]"
  }
}