{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "7985dd12446976f4b8810d920dfa363b9c7b8f4d7c1a2cdf0ad3932b321587cc",
  "signature": "M/zLTjV2sJHJ51ad4+d4XRGqRDxDJ1l4Ls74iQRk4qpcLmcXFBWmkj0FpiVd7aM/5t9HRZV7Rv4EX2vmbe5FBw==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T00:49:49.944Z",
  "slug": "gtm-competitive-battlecard-writer",
  "version": "0.1.0",
  "filename": "gtm-competitive-battlecard-writer-agent-plugin.zip",
  "bytes": 4614,
  "content_digest": "a11a0a59bae3c92dad09033433771a2faa7775697dd03314ad60bc7fee663e5d",
  "content_signature": "Pr5NPm+VPU1DJyV10vsQyjAIdO67XHC+NCDmJbhoNi7/wL919X7GnRjYeGPLOBKAPLO5rgvXGMDifSWbACGODQ==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "afa7cae5f72f05fa62bcdd38111b2adc0d4e3da698291b827f36b260c8c97de6"
    },
    {
      "path": "skills/gtm-competitive-battlecard-writer/SKILL.md",
      "sha256": "3d032742e29c217dc08b2b19db3f847481b614c2220d08150debee4c4066b612"
    },
    {
      "path": "skills/gtm-competitive-battlecard-writer/references/examples.md",
      "sha256": "92d79b3a33385cb09a5a2d27771170366482b9fe853b73b77466b21b7c2012d4"
    }
  ],
  "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]"
  }
}