{
  "spec": "sak-package-signature/v1",
  "algorithm": "ed25519",
  "sha256": "5dc7ac9f4f052efadfb9a5258d1b30f9a5987c91dbdbc941d7d7a2f897f3f66a",
  "signature": "OFZokWp3ylqEhtctmukxMPeFTUagluswHhwXy3oEKl+FaQImtdn30r9367yBSbStWl760PWuBZSWg8AzA2TTBQ==",
  "signing_key_id": "0aff169ecb84607d",
  "signed_at": "2026-08-24T00:27:55.646Z",
  "slug": "prompt-regression-tester",
  "version": "0.1.0",
  "filename": "prompt-regression-tester-agent-plugin.zip",
  "bytes": 3340,
  "content_digest": "346fa112a22725d031e7f70642403bb725de412feb241f2c9634d88769c408a7",
  "content_signature": "fh+6JbAAK4l92bW0TfsCkuGnoAkCUC5udr1YrynW7dyCfAWuKH6W6u6wcNl3KsF6Q1EQpZPAMlr76AhL5BjqAg==",
  "files": [
    {
      "path": "mcp.json",
      "sha256": "a4ec0149cccb566b6c4b6d8413290229819ff2adcfa9eb5387c3f91d31103a57"
    },
    {
      "path": "plugin.json",
      "sha256": "78dba5f388f68f77a98e74945042094607f3a47197320cdccc9e81de53e0e7df"
    },
    {
      "path": "skills/prompt-regression-tester/SKILL.md",
      "sha256": "5d3b7c60844258a6d0f0dde93a4f08b122e0cd4d449f256a05a4ed34cddbcfe5"
    }
  ],
  "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]"
  }
}