{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "7160bb187e9d8f637684342387185be90513a6a6c8479b5d533fd337fbf01006",
  "signature": "OTrUfAyjf1SyTfxiKypb/ykC+BWZnqHr9c6TqORVep10KFCnwqPOGXKHVkk/B8Zx+ChKEq22G3YWY+nMHDrcBA==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-23T23:50:31.997Z",
  "slug": "launch-checklist",
  "version": "1.0.0",
  "filename": "launch-checklist-agent-plugin.zip",
  "bytes": 5057,
  "content_digest": "16e94035a51d289cf0538e101934f6f4ac8ee33b87189de57460ac56c664f3a3",
  "content_signature": "mBY1k8bYQn6X6PWNTItF0FSkAm4nXNRrqnaPVX074Aqpps2tkziS6afi2xXvQW7Cev9X/J5xr9iSOONVWStODA==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "d40f9cf1959f7f9c986614cda7f9759295bcaf25cb1bbc5308ca38238fc37946"
    },
    {
      "path": "skills/launch-checklist/SKILL.md",
      "sha256": "4fd5d6f8eb423e1720f2eb68d98b56a6b2a3ce02f3095d4048085d5fdaf9be3d"
    },
    {
      "path": "skills/launch-checklist/references/examples.md",
      "sha256": "85516b589b3a3372a41906cca4492206ef8462df55596001bc2af4ad1473f895"
    }
  ],
  "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]"
  }
}