{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "0d7be55dfef48d54ab3e0d78d1144fdd709f378296a860bce67742577ccd7878",
  "signature": "4bxTSUQyzmsPRCgJNd7oje1sNOLnj8sTyRylI8akiCN3WPBU69E6eFKIcrpNGVceSZ+uTSg01LkvFzD1d8fdBg==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T00:19:23.994Z",
  "slug": "database-design",
  "version": "1.0.0",
  "filename": "database-design-agent-plugin.zip",
  "bytes": 3449,
  "content_digest": "2cb2cd3c85ff220bb47e414e900c272551e5cb9dfc454bad04d8b9cf4aff5a94",
  "content_signature": "rM4PzddOolKXbZX9KXdebCZ/Qd6V9X08h8yZsmiykDOqIMNX5jf3STTjb9ZK7Vxla4PTxaTFeX/sQF8H5uPdBg==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "d20925e4a293592daf99311b7856e42e3070a707f3a394fd5f96467feeeae34c"
    },
    {
      "path": "skills/database-design/SKILL.md",
      "sha256": "728c2137bbef52ccb434d5b17d477ab2f547957c0583f662cf7c43208e70aeff"
    }
  ],
  "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]"
  }
}