{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "53f743f189db6d8975fa89178a0139d357bff0412b234fea7f91518a2f7c3ddd",
  "signature": "vde23bS9kYWqj3GujcG9ao1q4fIBgjKqp3Lo2QZokVdY6NM32whgEtXD3JATCH0hKWNlar3wq3hUNttHrL14Ag==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T01:07:59.845Z",
  "slug": "ui-copy-microwriter",
  "version": "0.1.0",
  "filename": "ui-copy-microwriter-agent-plugin.zip",
  "bytes": 3505,
  "content_digest": "1f9fb7f0b29957a4ffe30f5e82e8ed3b0f2f27c36bd8cff20e212bc0c2074332",
  "content_signature": "aRi2AzPPXKijcSDi1giw6Xy9csaZNpRYHSK2vP+Y1ZI0CfwpngTuT3NvFX/o6CHZWzRv3W+Hv01TiMj2/PRHAw==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "ed9744066d859f633db4f7932aee277b2ea4dc8c07c3982875f6c4e0e55cdfbb"
    },
    {
      "path": "skills/ui-copy-microwriter/SKILL.md",
      "sha256": "dc4f6c7131dd2162bc09e343855922dbeeffa317e33076bc095f197c13d80627"
    }
  ],
  "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]"
  }
}