{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "0649324b7ff6a09d821752a8e389bea26d821b6f1fbc7e4d54bd38029f5799e1",
  "signature": "LvIVp5MwmgWRsLuImSgyvU9w8k9N4dGZAECaJiwcuQy1hbZy2l2lTSpnL8b430Sh8kqllEoaR2CyDucW8uAkBg==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-23T23:55:05.738Z",
  "slug": "performance-review-coach",
  "version": "0.1.0",
  "filename": "performance-review-coach-agent-plugin.zip",
  "bytes": 3563,
  "content_digest": "1569365546a4f9f6c07c2b02d05cbd46f93ae894604caeedc59db558f7f80bd5",
  "content_signature": "+SyrppOiYcQ67tF3gynlCK9u/BVhK8vm2DN2s7W9ujJVqTqWv1CQbJoYzTp5VLCsccUMLzujRkPV8C5dQuL4Aw==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "aa5349ddee4a98480ed5be82ef5d3c11772749ae1cf64fdc1639ac8b90091f48"
    },
    {
      "path": "skills/performance-review-coach/SKILL.md",
      "sha256": "3da4950c0f2c2b82d1116a7d3a2965baa9d671a0f66f03fbb0b79151f6b30773"
    }
  ],
  "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]"
  }
}