{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "90029b0acb2aaa6a08c7aa011b08676d525adb90c7d29d9bfe38526a78e883de",
  "signature": "bGaxe8lsnQKNl6RSPXEFzdPVpG/JqljnIGrP/AVzLUTp7A3I541eKvAA0x26uCWsDhiVB5D3Nv4KMKym51cpDQ==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T01:11:24.610Z",
  "slug": "guardrail-energy-utility-safety",
  "version": "0.1.0",
  "filename": "guardrail-energy-utility-safety-agent-plugin.zip",
  "bytes": 3560,
  "content_digest": "785b523670f0d261837a9ba3a897acc10698436d78380f3d73d969188c004260",
  "content_signature": "naT+lC0u2lLk3lBdb8BQm5vCMU9VPi2O6EHezKbBRnxhy++8lFpwOTIwAGEfHOAwAXnK2Fd+9Gh4+tOXa0DFAg==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "d78f3da908392ce1d2564cfe0749865d51181196f8a972a21f7b1626fd55a7dc"
    },
    {
      "path": "skills/guardrail-energy-utility-safety/SKILL.md",
      "sha256": "fb0b77708ef004a31ff99c423c0f310cca0fa3364d5cb65c2e905d3a48182d38"
    }
  ],
  "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]"
  }
}