{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "1e200ac7be2396950bb4127c0f339a109330ed97a9b24a0bfc235e2d61dac924",
  "signature": "pa5gtU8WUi8VVFezUTz7YXH07lLNe4cTWRLpmlegbfDwwUhqjNHjC/QwssYXcKMqAIB2n3XUhq2TlR5KHgRJDg==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-10-08T16:25:45.118Z",
  "slug": "agent-handoff-protocols",
  "version": "1.0.0",
  "filename": "agent-handoff-protocols-agent-plugin.zip",
  "bytes": 3574,
  "content_digest": "e195f1a8aff34570f47d56f73d291dcdb61775d39248826aa0a1c680d84f2c4e",
  "content_signature": "TcSfJariHPgErBusyDQVmR9pED7k9JRoHG7viz/pNpDvVXWNAU9AVUwydEO3PFwn4EadHZ14Mhdtr+QMjoA7Bg==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "1ead35cda992c9ae6e4fc3d54143a9c1bf7ea5fa75fd65051b9a6d9f4e97c483"
    },
    {
      "path": "skills/agent-handoff-protocols/SKILL.md",
      "sha256": "ccba730db1acbce562cab9b03610d4f29aa2fb107ee997333d872e57e0796cd7"
    }
  ],
  "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]"
  }
}