{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "762fc8e5996bcc80d2b44e5cf4968a102f9460ad8695cf2e918bb532561db72a",
  "signature": "N+fKbW4EpM1LuEBkWJb4TIEA1YdKC42a3fmfRIHoZsGZwWaPTua2Us6Q+R3R9bnFg3uEylCV4agGmwWGvXD8Ag==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-23T23:29:53.768Z",
  "slug": "s3-data-mover",
  "version": "0.1.0",
  "filename": "s3-data-mover-agent-plugin.zip",
  "bytes": 3143,
  "content_digest": "dd8fab1ac68aef8acf5ac1b0831137707286e9d8c64fa0107e84ed15f6cff6bc",
  "content_signature": "iZS0tkzuyAONlNaIlXT5Og9yX0gmXh+KuvR9JjVQgmr+S7vgdZEH3r15jb5s1ao4Q+hDqZErU/IL+XkPKYf0CQ==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "85ba6008f0bc5cb724ac45fa6912b9731e024e1f6ab50f9b06c77826ad53bb2d"
    },
    {
      "path": "skills/s3-data-mover/SKILL.md",
      "sha256": "38d4f43e06b39a9ae8fd0fbc8ba7158cc118335267a6922f061ce907f1d5a85f"
    }
  ],
  "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]"
  }
}