{
  "question": "Can I use ISC commercially?",
  "slug": "can-i-use-isc-commercially",
  "url": "https://www.rightshold.com/answers/can-i-use-isc-commercially",
  "short_answer": "Commercial use: Yes. Commercial use, modified and redistributed: Yes.",
  "framing": "ISC License (ISC): Use, copy, modify and distribute for any purpose with or without fee, as long as the copyright and permission notice appear in all copies.",
  "checks": [
    {
      "label": "Commercial use",
      "license": "ISC",
      "license_name": "ISC License",
      "intended_use": {
        "commercial_use": true
      },
      "verdict": "permitted",
      "answer": "Yes",
      "findings": [
        "Every use you described is granted by ISC, and nothing you described is prohibited."
      ],
      "duties": [
        "attribution",
        "license_notice"
      ],
      "curation": "curated",
      "official_text": "https://opensource.org/license/isc-license-txt"
    },
    {
      "label": "Commercial use, modified and redistributed",
      "license": "ISC",
      "license_name": "ISC License",
      "intended_use": {
        "commercial_use": true,
        "modification": true,
        "redistribution": true
      },
      "verdict": "permitted",
      "answer": "Yes",
      "findings": [
        "Every use you described is granted by ISC, and nothing you described is prohibited."
      ],
      "duties": [
        "attribution",
        "license_notice"
      ],
      "curation": "curated",
      "official_text": "https://opensource.org/license/isc-license-txt"
    }
  ],
  "context": [
    "Sublicensing is not mentioned, so it is not treated as granted."
  ],
  "sources": [
    {
      "title": "ISC License: official text",
      "url": "https://opensource.org/license/isc-license-txt"
    },
    {
      "title": "ISC on the SPDX License List",
      "url": "https://spdx.org/licenses/ISC.html"
    }
  ],
  "check_it_yourself": {
    "mcp": {
      "tool": "check_license",
      "arguments": {
        "license": "ISC",
        "intended_use": {
          "commercial_use": true
        }
      }
    },
    "rest": "POST https://www.rightshold.com/v1/licenses/check"
  },
  "computed_from": "Rightshold license profiles at render time; not legal advice",
  "updated": "2026-10-19"
}