{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "886334bf61db283239d4a1f58471e33f7d932d760aa44345cb242bc534f88552",
  "signature": "Cd/wpeVXsFd3YvggpaUxyty0EHdtP+r0sqm9teRjuZMxmiTwl0sqKpFzVJXYjsAkJeBg2Fg7VW/I9n+mf/wQAw==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T01:07:15.890Z",
  "slug": "data-pipeline",
  "version": "1.0.0",
  "filename": "data-pipeline-agent-plugin.zip",
  "bytes": 3479,
  "content_digest": "53d697af9d2ed521401f83f0ef18c55b67dd642d96dfe7c3c9461bff8dd3beb8",
  "content_signature": "cnEVw9m2hiJL8KFTZdDFvdyRE8eH7oGjdbP68eqPtroQ+nwn3/uP8ENPQiJNhNCmAPojn1WcGBJ3bGPqxcjmDQ==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "ab711ccd78b6e7a9f432566b23cfe768324c0c856d771c6c50214afb95630393"
    },
    {
      "path": "skills/data-pipeline/SKILL.md",
      "sha256": "be951edce53f8b1354e3de3d36bd2c59492f292ef81c6ec2f20d270ae3621423"
    }
  ],
  "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]"
  }
}