{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "b900564805fb3049d6fff702f318bb58740b554724c3c3c2728921a855b199db",
  "signature": "oxQSNu1BOCbAFK2B2h0adt9qf4Bv2ueje6mBffuo1vvrqu8zc9CzyZXYn+/6o19EXJ1kTSKjLuHWF4pcr2wLDg==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-23T23:23:24.598Z",
  "slug": "rag-evaluator",
  "version": "0.1.0",
  "filename": "rag-evaluator-agent-plugin.zip",
  "bytes": 3159,
  "content_digest": "a6dfd0961f70fc6a4c25e70873838aec2d62036e8bb2de4a78cfb63b42aed5c3",
  "content_signature": "R8T2qi4mEKfM5dmCXa1fzbs6HwK/AOakNrJq09Ih210UIsYV7Ld0E3yGW7WaHZStD/i8Q1PjQ1PTABjbra0UCw==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "56cdd7221fe0e0ce116bbd21fd158fa2833e6c487e1571195003cdb7c8ce43a9"
    },
    {
      "path": "skills/rag-evaluator/SKILL.md",
      "sha256": "1b6cda243eebbac408ae7957428fa61b8a0736cd38136c00c097ee26f311103e"
    }
  ],
  "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]"
  }
}