{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "93ff0b7bd6cf686c2ce504f072046a6b3aeae956ca4bbfe3c56737d9a2262810",
  "signature": "XVbFbswlnZn3hqniWCnW+Q/1T3x313IzrxT5fsVZoyCp5hl5evEEp9r1nYFqJmzCQzcBvv3OgPPMg8GBM3dxDA==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T01:09:23.992Z",
  "slug": "brand-palette-builder",
  "version": "0.1.0",
  "filename": "brand-palette-builder-agent-plugin.zip",
  "bytes": 3541,
  "content_digest": "531c9aac7cd873026dc01bcc9b284ebf3dd06e45dcce8c57eb7af88eb81f643e",
  "content_signature": "ganCme/j0kTW/LrgeS88Z6AwezoH4Rq7jZ8wd2Ul13hkwo0JKelT9uIF88VcOsL8M+BvgTh2zTN0VjHtMfF0Dg==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "0959c37837e78f81bda39f2fdbc93305951ef8ad2a89c1e5a5da16f49ec56cf6"
    },
    {
      "path": "skills/brand-palette-builder/SKILL.md",
      "sha256": "0c77542a8dd95e4c52f0df615131e4db897693c2dcccc4c15739d6fac6554edc"
    }
  ],
  "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]"
  }
}