{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "0873ea1e48e756b4422e68e08076d02c2b3674a1ded20bdf8713394c3f4419e6",
  "signature": "89LfsixwAsu8So2OqLmC7vWjkgoq6+S9IC42g8DK52a+61TZ0S0ROzeFTBA5e3DQHoWpl4YY0gX6fXMaGcd+Bw==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T01:09:43.999Z",
  "slug": "gx-mixpanel-expert",
  "version": "0.1.0",
  "filename": "gx-mixpanel-expert-agent-plugin.zip",
  "bytes": 4558,
  "content_digest": "57f3490b1457105e519e7ab22d7e80f997e3e95a39d9e6df1ba88eb5ad23e4be",
  "content_signature": "bzgEpsDUXCQMarQF6nKJCiAjgqCtWnd8XsgyqbcqgI7jRc6Z/e+5tsTdsVKfIRdjuv8L/HjzxOvZ+6C5RthGCA==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "7943769a952e613202b3a10bcb751eb7828379122bede9a1646fa79516c8acd8"
    },
    {
      "path": "skills/gx-mixpanel-expert/SKILL.md",
      "sha256": "99b990ba158c07b8d15c5602c8f0f7bfbac47755196fb2c335795033419e9dd3"
    },
    {
      "path": "skills/gx-mixpanel-expert/references/examples.md",
      "sha256": "619a9ac59d502f840318977c3db8e3dcdbb0fe265da7a12e2463a20a9ec7251e"
    }
  ],
  "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]"
  }
}