{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "ae3e7082d48e19c6be4374e31d5914cb1c9bfba5a22964d00b951cf3cec4b440",
  "signature": "Fw/NicBifr0S0uy5baLWpxSAykOtYRznTQ/ZFfojj01oKv6/SPV2w2SThKaHcZOabnB8keL0643vuSRNA2sxAw==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-10-08T16:24:35.074Z",
  "slug": "mobile-performance",
  "version": "1.0.0",
  "filename": "mobile-performance-agent-plugin.zip",
  "bytes": 3454,
  "content_digest": "23db9e8b7fd09a87a9a652fb655a790a487594f84cc31926f6561b3a93bcc045",
  "content_signature": "tGEmcQT9K319Fq5F+Ua3IaUOlAbNXklU/C4g/B/oVGd5mT+9hL4s3brfVhoQs4iiEBh+bB6E7n9yKG88ieh/Cw==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "f8cd41a7de3fb7351a80067714a7f19f0659285c3b53c1a8986237d8b227a546"
    },
    {
      "path": "skills/mobile-performance/SKILL.md",
      "sha256": "55fda7ed305b4724eb9a04395934f52d1e0a217ea0462cb0c13077ac1c01f3ae"
    }
  ],
  "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]"
  }
}