{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "03108bef364350101e6ca8fb4050bcbd14ac029e56927da4a91140d9925aa1cc",
  "signature": "kfSuDyQw8VPRJwyyYfcUdpGyB4cesFcoJaucc6yxnBAeSolUkZiY8zAOwXZ6LJJush6U63ANHacGS7D+G87UBg==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T00:22:28.993Z",
  "slug": "csv-cleaner",
  "version": "0.1.0",
  "filename": "csv-cleaner-agent-plugin.zip",
  "bytes": 3135,
  "content_digest": "84e2e2dd63cadc791b9e073566dacea6be7539b5d80ee0f0faff1c4c6a2d15e6",
  "content_signature": "BjmuAqPnfHPt3Opr/DpjDVtx2gzATJnR0prcxwH4xMcAQPRGNDTDgZUHmMBwmaFDiyF4iy4AB5Zr5+84/vmuBg==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "8238aa0492d0dfba872b341a8d6f4e068e18fa26b4be8cba76a3f7de2670fa82"
    },
    {
      "path": "skills/csv-cleaner/SKILL.md",
      "sha256": "e5b32da694e7f968fdeaa4188b764f18826e7303eff4ec1a5fd382f876a50943"
    }
  ],
  "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]"
  }
}