{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "a04fac276e8d2f58fdc1248463da288b06fee6ef39e8c5858bc5015ad12ff36a",
  "signature": "ZimnirJn3DlebJoNoAxGWJ1yZkQFs7Mx3llTPJ/U0089JPLbGMYMp24yZfW1o/Jj8YsrKbk/FJscFGrbNTiCDQ==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T01:08:00.382Z",
  "slug": "pl-churn-save",
  "version": "1.0.0",
  "filename": "pl-churn-save-agent-plugin.zip",
  "bytes": 4066,
  "content_digest": "46b17ce69382cf58824136513c848025757df7c419abcd5e41a5abb233d4ca39",
  "content_signature": "/8AmXQDVCuYl06i0SxkAn5dY6jjU8UxoiKLdgpRzXY8COR7ZD68ZOiHaDepgGTrwFj6nudHGpzTWjwxrl8HpAQ==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "255118e69298e8434f49c824879b6892a7c9122fed03ffa2ca5e73ea4fcdd4ef"
    },
    {
      "path": "skills/pl-churn-save/SKILL.md",
      "sha256": "e7d9e05521b5484d1b9aee36cbb7d62fcb30366dfda4be0f2cb9f2243f780318"
    },
    {
      "path": "skills/pl-churn-save/references/examples.md",
      "sha256": "9726c5def208c03bfa335e734c3c096fb0685ce89fd2097c9d2f4a4e19890e48"
    }
  ],
  "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]"
  }
}