{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "2bfd63489cc0a7d80eb49b79115b2227e067d5d1eef730f9014cdc2766735def",
  "signature": "pk0k92XwHAvI0Sd2wCyZLEq3M7pQkKRiqfyJcOXr1+FfAdzSQQqwCjHBqnQH2vawuw+yqWxs6lFTubmd7VSYBQ==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T00:26:03.658Z",
  "slug": "sg-customerio",
  "version": "0.1.0",
  "filename": "sg-customerio-agent-plugin.zip",
  "bytes": 3802,
  "content_digest": "453d7b9d332baccb59a6f4326f6b552224570d8b495aeee2bc76491e40f642f5",
  "content_signature": "yJmFonbKRL6yWGMiiDiIrJImSrdYRnmEjsSaYITqZiRwXSLjqKrEGVTVrXKIcLQzYyhgBbxW9NJPXSquQbB/BA==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "9338be46d22a90add4bf696ab5863133d116c122dfcb88aae980e15fb0a8e567"
    },
    {
      "path": "skills/sg-customerio/SKILL.md",
      "sha256": "bc4fcf2108c48a6b0700eb5bb8f707b06e20ffc8045635a7e9a46a5504c9db03"
    }
  ],
  "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]"
  }
}