{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "065dd7d84d6a03b85f78531f952ffe510eb103ba08c45580d91148e3ce1bcb46",
  "signature": "eD7F6ILREkS947XBv3zA/8TJ+0NqI8j6x7ZGz/x8Ub4a6uSVkQ8SNpJrp87EDn01i/d4+8NxWjR7pQlHcOAmBA==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T02:01:28.370Z",
  "slug": "offer-letter-author",
  "version": "0.1.0",
  "filename": "offer-letter-author-agent-plugin.zip",
  "bytes": 3497,
  "content_digest": "cc3226e8422d1c1b65466b9edd507061e7b1723f34f9e6c330298087b2219cbe",
  "content_signature": "+qmiXle3qpNAnTjnV463a6PW5L7UhR79O0oIx5QPHzR6qGJ2vqaQ5ozjhbv/HNYCUQN6v+N4mcYQK/UXYOpNAA==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "58685633aaaac54244caa5548f0dce2d253fbf52acf9e2403452c2f94113e313"
    },
    {
      "path": "skills/offer-letter-author/SKILL.md",
      "sha256": "45c3c16c598822127ce42e16882158d1b9009c6e5aaca254f1bf4460ac21eca6"
    }
  ],
  "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]"
  }
}