{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "d0653e9c9607e0659086a24b940caf288621fd9c057b40ce30a80f1af370dc98",
  "signature": "a5uERMgpK/usLcWNKJoWxj2bAxHPNhVKIHyOBJ8RDF1+8KVsxYRo2WwrYuJXy4xDyMUgieNhfyQmZ+GFlGoPBw==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T00:44:43.968Z",
  "slug": "user-interview-analyst",
  "version": "0.1.0",
  "filename": "user-interview-analyst-agent-plugin.zip",
  "bytes": 3501,
  "content_digest": "3c3a99dbf7943763e394ec8d87740b10f0f4431b6eac98619b0f64490d677319",
  "content_signature": "M0atlndsFSgdo4pVHSSJqFtjB93hr6PxWZbGDdUxrRnZvdWb2ZDfrLHPMtXFw/rcLFfHjtNQtrhqJF7aFD1NAg==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "e9dff47c9a6872352127d3b11fffe4ca71f62031db2493aa1eb853ab72e85698"
    },
    {
      "path": "skills/user-interview-analyst/SKILL.md",
      "sha256": "471d1986b60fad15302d0bf2af55540a9b6c07ceeaa3905744578bc23872cbec"
    }
  ],
  "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]"
  }
}