{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "2512d5212134c3fb1422ad1e216fe939e492a7a71b13d982e1362cf47a6bb093",
  "signature": "Y4LJbXdX2hskGfd6/bK+M26VZG8+cCd5WgDFBEhKTcOhjpef1U2jVRiXXCR5MNWzB3hz2W5iUcs4Lx3fMqfNDQ==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-23T23:57:33.114Z",
  "slug": "gx-outbound-cadence-expert",
  "version": "0.1.0",
  "filename": "gx-outbound-cadence-expert-agent-plugin.zip",
  "bytes": 4996,
  "content_digest": "a0229b0c42e1282db58045a37edd3b2d1a98cc20dec29e4e5293dacbeb925f22",
  "content_signature": "zByCSyoeACv+JOlGt5RXGFDG9FIjQO3c/mx9WRZg1tcfVXU5sXIgR/P8iwPaN6tGyeMesFV9c8PbK94yFWYtDw==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "f671a5089d7ffb357cf179469087ff83639dd9560f07653507b269f9299ef82a"
    },
    {
      "path": "skills/gx-outbound-cadence-expert/SKILL.md",
      "sha256": "85d92a71b4e119047dc666832ae525bf06853733810a6c5752e98e8d3e945ef1"
    },
    {
      "path": "skills/gx-outbound-cadence-expert/references/examples.md",
      "sha256": "4572643d4b709b9bfad0f46ed3cca458cd9656c46370dfb19dfd6da38f12ba37"
    }
  ],
  "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]"
  }
}