{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "c31665d8ddaa615e70d87bddad5277ebb3551f6d7ad9775c85061a75aab55d33",
  "signature": "JCd2O3uban+1rSjfLhzLAkP8kunPG7WkiBUPk20MAtQ3USN4lkwF9HI7HLyJTZXQ0/rFxLzgEZ0XzqWBEHiODg==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T01:58:22.005Z",
  "slug": "citation-checker",
  "version": "0.1.0",
  "filename": "citation-checker-agent-plugin.zip",
  "bytes": 3469,
  "content_digest": "76fd11c7c0aedc5733c63c500ba2c8497556e05ec30abd66c8dfbdb7e367a97c",
  "content_signature": "dW3LmLnbKy/xjPhDBZuQP0RckBEtJiASDlVzMOUJ3CfcnLAquc3P6ewvjH4/gXieNWRqp63s6GdwYKfWrL1VBQ==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "6253d662990ff65da6d24bcb52826a408bea1d4e85192e60e02a7d4542a70a1c"
    },
    {
      "path": "skills/citation-checker/SKILL.md",
      "sha256": "00fb014ce8d00c1034b60f7e02303adcf2337e39857dd51a273a4d1770d16642"
    }
  ],
  "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]"
  }
}