{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "905bca666966c971863bc804cc1a51ac798db4ee923c507f514360fe5438ab2a",
  "signature": "scn3eQgJLPnjF6a0/Tus1xt+Efc0+y9a74tahtMgCrsf6/fyMABEmMAXtu9ztrnd/+PX+nOh/V45d0SOHOa6BA==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T02:01:22.551Z",
  "slug": "sg-youtube-ads",
  "version": "0.1.0",
  "filename": "sg-youtube-ads-agent-plugin.zip",
  "bytes": 3749,
  "content_digest": "15623bc5f433ea8477a350c7e0f097102b38e957d42dde57a26e757a8f9293e5",
  "content_signature": "Y/nxT6tI0wyggAPTqhKCPt75i1GnVQjTLX2nOBKnsUaG0A1SKq0HaRWtWLebcjouuEgHt07eDrf1Dy2WLjaqAQ==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "715e4b17a46447ad935ef9dad6329062ff57eeb7af05f949ad7c7527907587a8"
    },
    {
      "path": "skills/sg-youtube-ads/SKILL.md",
      "sha256": "5111edd8a6ff74f9dda16fd7981b95d0d5f2417a0149e764c3ec75793f4902bf"
    }
  ],
  "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]"
  }
}