{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "97628b6049cf03a464a4183e11c8b56521f2ef80c0ab13015af432baa083479f",
  "signature": "JbkCTeJNZOiE+kJNGWf7qCo5J8hkVTxDYaT2eHldo6M6K4whix4QwIlszfK3nSahxf9gIzb6B7JI+LfEhHIXCw==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T02:01:28.341Z",
  "slug": "pm-product-strategy",
  "version": "0.1.0",
  "filename": "pm-product-strategy-agent-plugin.zip",
  "bytes": 3826,
  "content_digest": "82a58b49eec2e13232bd64eab4a4ac0bfc3f75b813f59a98b9dd12a93504fe8a",
  "content_signature": "IkuKcN3LKKhvyTdRUBoQ+fb0SdKBADlAUfTNoFe4RR24l8vmZUFzNqca3h3nyFuPI1WFng4LPTPvxZKK4CGOCA==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "92380b9f270d712e318895137bd87d468ec9f7bf6b8e8b7c364536e5c160cebc"
    },
    {
      "path": "skills/pm-product-strategy/SKILL.md",
      "sha256": "15dc3eff2afd76983d7bb7ce7b355752e960ee7f4a467f2237d92b32a145dfd6"
    }
  ],
  "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]"
  }
}