{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "b398934a0323e83b351db590dac2d2e4db6f27f0fd6059c779e33850a8520668",
  "signature": "eoYOCpjugj+WGhIW1jR9WRxL3ENVB7kDqlmfeZG8rGhQuaimeRxYhSuY09YnCP1Jgk1U+zjr0MvXju4AsLPwDg==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-23T23:28:39.550Z",
  "slug": "attrition-predictor",
  "version": "0.1.0",
  "filename": "attrition-predictor-agent-plugin.zip",
  "bytes": 3501,
  "content_digest": "50218c54abf87293a177ac7ceae643c636f235ba901ba79f599aa2720af1fc6f",
  "content_signature": "KyNUDaYal3+oHNkHI+rad/723xYtREjotL+7vS458AUazBeQ5dW0q228jTIJUTpW0aVDIA6ode93x77QtmO6DQ==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "159de338f49459fddaa84cf9246150ca1d5a23f5b7937a67abfdf2e7081c26cd"
    },
    {
      "path": "skills/attrition-predictor/SKILL.md",
      "sha256": "ab5071f421ee5f5a6fcf618c96c5be36f79f0a0c4acd450197fa482e09f60604"
    }
  ],
  "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]"
  }
}