{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "bf91a44904c4b94c3d32f8a8e41b9b59a142a047a84e57ee2dbfb6a108554de3",
  "signature": "2dxAl6n3vNjWdUe6V2D3fu1O7LtJCI/dJUTHSlsrkUpAreh6pAY0cWL0zDJpPRm+QhFFSPSvQ2MU1lC9QAy4Cg==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T00:11:01.388Z",
  "slug": "sd-a11y-expert",
  "version": "0.1.0",
  "filename": "sd-a11y-expert-agent-plugin.zip",
  "bytes": 3874,
  "content_digest": "366e3efc2a7aaaca7aecd8f87aedf999780ceeec065ddddf311cc73feec0cce9",
  "content_signature": "mFv7gOiTCAJ2AvAvOsO33L8q6jKBvcorOxRNtInUR3iXydCiR+uHtHXtittArQhhuF97YuNOFMfwBHEOa/2hCw==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "84d4afb50bd524b3c1da22a8e86ca1a5de041581e20af3b6050209de8b3d931c"
    },
    {
      "path": "skills/sd-a11y-expert/SKILL.md",
      "sha256": "32adb59d013b290cfe1e1b67a0a22b19a8ef01ae5666053c687871c8281c38c8"
    }
  ],
  "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]"
  }
}