{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "2687384b249433aa70b112e25137a3576fa7f5a3e31eb2185a21add68272e949",
  "signature": "DuJPQQCJ6ByPIy8B0NGYxjtpj5QpMaETKuI5d8wGC5zgfneFWMg9+6dMcoNADwiyzs1IUh2HwP2p6TJ+dS4qDQ==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-23T23:23:59.607Z",
  "slug": "statistical-test-picker",
  "version": "0.1.0",
  "filename": "statistical-test-picker-agent-plugin.zip",
  "bytes": 3579,
  "content_digest": "4fece385064fb6d535bf32cb84c1f50de578005433fa3ce6714a3f8dcdd1e431",
  "content_signature": "zRcL9SEMt0adZTy+6avDsjlO14hJ89YlAdaKygaynmVcoRMFQxZB9E554MmSdcfD129OXlP610cwESZoUli6Dg==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "a6634b4f27840fd2d428482fbb321b12261e2469f613ec6d020646260395e195"
    },
    {
      "path": "skills/statistical-test-picker/SKILL.md",
      "sha256": "13e9393f7f898d343237d7621081ce2ce17d442e04d38358a470fa5e238b9f79"
    }
  ],
  "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]"
  }
}