{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "c9ff3e8250046dcac71819d5914619dab93b3015cb2d767afe684c1cfe418157",
  "signature": "vI1MWKt3P/iBBZVwW8Fdh3c0H4ju0sLTGE632Rkiby64nPFhUTxn37KDfy0+SAoIgFliRnjZ2Y63SL0rwfvaDw==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-23T23:33:21.787Z",
  "slug": "performance-testing",
  "version": "1.0.0",
  "filename": "performance-testing-agent-plugin.zip",
  "bytes": 3485,
  "content_digest": "e856fc6568995e4afbe0a9b2e4a64a38fe07866a32d829469088275803b5d33d",
  "content_signature": "gbGPsfDwUg79eAX3dC4asW+Q6KPsJU3xnjy/oL281nsmcSB3vpC+CdR/gU0JCEFIKQiVwzyNwZux9DPA1ymJBQ==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "ee82a3ca77efbad6f8452e2e97b857790ad82b841c985fe819f23b212ba9ff8a"
    },
    {
      "path": "skills/performance-testing/SKILL.md",
      "sha256": "c83a5c138fbf1ed874d01f3d1334071aa777445cfcdf3dc334864401884fb1fa"
    }
  ],
  "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]"
  }
}