{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "a1048bc317d43e82d572503e0bd23aa5fb387d9e1ab77afe50db37bd1be4ad2e",
  "signature": "Y0jtiv0LktE10UmqXySHc7wm/H0XRE8Hi05+36qJYPHD4n9i8bpuAFWtxSrq9WzM1PGMYn42+d9n0kMHUE31Ag==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-23T23:55:15.836Z",
  "slug": "od-design-brief",
  "version": "0.1.0",
  "filename": "od-design-brief-agent-plugin.zip",
  "bytes": 4555,
  "content_digest": "288b83b40526c2690311db05847f436c729be890c428ae9f634d31b978a8968f",
  "content_signature": "W9a48OKp7wiurtiDdwGFonX8+WUWc14DNeafGeUXWEoHvVIMJfP7ia8vnoQSNzUdjyNs00x5yaStYHzuWqOWAQ==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "c10af2d903ac445dd534c0d3309023daa5d735550e3f2381cd928c65c5cec989"
    },
    {
      "path": "skills/od-design-brief/SKILL.md",
      "sha256": "9367acc8d4a124a08b8d72104d1ffdcabe5b1a37d2fd5365377ccf871aaf979b"
    },
    {
      "path": "skills/od-design-brief/references/examples.md",
      "sha256": "a216f8d9875f989c6c79c2e1afd0769411e89d8d20b955f8166bd53b872dc0ec"
    }
  ],
  "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]"
  }
}