{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "38ecb487738dccb3344f778dbcdd0b0d84cf9dda6b83e39e38210f3cc6b74430",
  "signature": "W8TjTBHBKq3iw4QN0W32Bo+HtJWE7hoNudCPcbafQubDKzVz3PiGaOxrsPAbUWdZqqNhabaAXfbf4s2p1xDgDg==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T00:22:07.434Z",
  "slug": "incremental-builder",
  "version": "1.0.0",
  "filename": "incremental-builder-agent-plugin.zip",
  "bytes": 4960,
  "content_digest": "a3822a5987c17a4d02a379abe8669e87a7e6b5abde897f04b20006bfdf77b374",
  "content_signature": "u1r6ZbGHq2SPcFADSWnG5Yp7jgzwhfmeouSa4GWIPPzfAxh8uKglPqsUAvJKUsaR4fxPVwe/BP72K8XFZWEYAg==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "03a8dc3100e662308f292bb8acb85afe4826e73e351fb5957f1359b937a3d057"
    },
    {
      "path": "skills/incremental-builder/SKILL.md",
      "sha256": "896e688c6d8823f972d1ddeac7e5db96ffa0f538a3a4e8100efca8bbb358e0ab"
    },
    {
      "path": "skills/incremental-builder/references/examples.md",
      "sha256": "d3ca2a931ae22395d60a7007d5bb4376b1c31a6eced869ae696be0904272e3ee"
    }
  ],
  "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]"
  }
}