{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "ed5da784b14ac9a7d5458e7eafbbe0de3c765c9a9e44eefd75dcb9a49f7a561b",
  "signature": "HdH0aJ8+kU3/PKJjRs0cMk7eCJLJI8Vhv6sWLOjBJDZ8Q/iaIOkjxBDU5gIPByEQr50U0AhG35y2ErANvT6OAQ==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T01:34:48.853Z",
  "slug": "pl-x-growth",
  "version": "1.0.0",
  "filename": "pl-x-growth-agent-plugin.zip",
  "bytes": 4102,
  "content_digest": "a08a39797e5237a33ddaea89f5df2f11175ff7902ee7a0a9726b8fe7d7f8e9d7",
  "content_signature": "3qv/0zKQhjonIRfJmmZH+OZzI4+xy3+SgM42R5k++0IJxTgR9aEObQeRgINYnKYUSgBny+WLR4TKWY1O/UOgAA==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "d48f262d906f174267e90c6c4af0b29cdcf204d1e3f4f8b964f3158e5d8ddbff"
    },
    {
      "path": "skills/pl-x-growth/SKILL.md",
      "sha256": "c08c42caa31e27b0f5b54da590952e3290968839cfbdd1116c7ac6a0be28fe97"
    },
    {
      "path": "skills/pl-x-growth/references/examples.md",
      "sha256": "9726c5def208c03bfa335e734c3c096fb0685ce89fd2097c9d2f4a4e19890e48"
    }
  ],
  "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]"
  }
}