{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "972d9ad5669253c0f1d632b15144febef055da645aae98123085d6137d931d82",
  "signature": "8+0PNryVV1vnt00QG96XeObxKudmrpIfjRnVnajzsrYaY5/aA6DCNEvVlQE2ZNyk/SvOkxsOuUTFyJzxOAAaBA==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T00:53:00.610Z",
  "slug": "ec-marketplace-strategy",
  "version": "0.1.0",
  "filename": "ec-marketplace-strategy-agent-plugin.zip",
  "bytes": 3983,
  "content_digest": "1ec43f40ec73ca502b09272124ba17782ca1f9b9a73e0d057f8271f8776eb874",
  "content_signature": "KBqT/+qo4LWFabYLFz5qn0jbc8uswQ1qXajbVVlVW3h7XHmsjkYE4uUrcBmwNNXvpbMubR/e5zCTxGJFua3jCQ==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "b292bd81db93202397a96065c9f4eecd3da08c6b6c620860c7477dc2eddca709"
    },
    {
      "path": "skills/ec-marketplace-strategy/SKILL.md",
      "sha256": "2376ce83953ebf9d171ed2ee7c65f88bc159ddddb88d5131c28a04b0a4befdc0"
    }
  ],
  "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]"
  }
}