{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "6ed9d52d6851e7eb4fd99e76fa8f5091b55d2f39391c3dd0e7c65fcbc79a6ae6",
  "signature": "jfH7g8ndpIjshHd24CXbnV7z3gGVDy0Uy8QvaP1CChF6HMxJkeLnYdnsZYKcACWQQEAD3XhUvvCIxW+E8iORAA==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T01:33:54.202Z",
  "slug": "gx-seo-technical-expert",
  "version": "0.1.0",
  "filename": "gx-seo-technical-expert-agent-plugin.zip",
  "bytes": 4840,
  "content_digest": "5a5c841cd9d9f22bc8e60a0ce9cf0059389ccd2c4fc2d57033e597a10e2f366b",
  "content_signature": "uiEVUuxz2QA1isT6J+DSiWZRgTif7s0YJUtL5HqovIox9QHFM02/f37zDMmFsKeC2f7li3NRL1eU4HGD3VUzBw==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "da8911c913ba704b22d85d11eec8b05b036853168005dc845c4914afd6a1c697"
    },
    {
      "path": "skills/gx-seo-technical-expert/SKILL.md",
      "sha256": "9f723568b846ac1599576705739066c3ba52e96712db5486512a1cc7aeeff86a"
    },
    {
      "path": "skills/gx-seo-technical-expert/references/examples.md",
      "sha256": "a2a0b2eab0e2e632ba86390398f8ad577b9fb456e30fe31b06dec833a3a40940"
    }
  ],
  "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]"
  }
}