{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "986870061737b22c0c59e819f4f8370e78880b7609bc1f89a594cb7b1dab5205",
  "signature": "KtaZdzDG8c0nXFQTuB69f1KiDTewfDXOWxdux+3Wed3uMWBCA1QtImFzctf+LVL8eyhq3QlJHUd1VCDTMvYUAA==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-23T23:29:09.043Z",
  "slug": "prompt-version-management",
  "version": "1.0.0",
  "filename": "prompt-version-management-agent-plugin.zip",
  "bytes": 3591,
  "content_digest": "5e49455b60ed1bbbd70f29a497a0f027e78a3d3c22ef4fc5415eb1a19bedf118",
  "content_signature": "YMpNuipWrpf+hS5ZQOEAPPLfjxXDlZM4F63ycgbblEuU5A7zx5InhUHSmqKu2vwg7u9FAPFWo4lr2sTd3dfTAQ==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "fd1f965e61e2015c6ce502ade641251adc6f60a650290ff04b4a10b5d2006b2f"
    },
    {
      "path": "skills/prompt-version-management/SKILL.md",
      "sha256": "37999cb228a8b3f422e3059aadcdfcaff2b048dc140f5cde3bc66f5f35862525"
    }
  ],
  "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]"
  }
}