{
  "title": "SPDX Expression Validator",
  "human_url": "https://happytails.ai/en/developer-tools/spdx-expression-validator/",
  "agent_url": "https://happytails.ai/agents/en/developer-tools/spdx-expression-validator/",
  "language": "en",
  "markdown_url": "https://happytails.ai/en/developer-tools/spdx-expression-validator.md",
  "content": "SPDX Expression Validator\nValidate a common SPDX license expression and report unknown identifiers. Runs locally and returns a reviewable report.\nHow can we improve this tool?\nReport a problem or share an idea.\nPlease leave out private information. Your message and the tool name go to our team via PostHog.\nHow to use SPDX Expression Validator\nEnter the expression or range.\nAdd any optional values shown.\nRun the validator and download the JSON report.\nReview the result\nThis tool reports bounded local evidence and does not change your source.",
  "content_format": "text/plain",
  "visibility": "public",
  "links": [],
  "tool": {
    "id": "spdx-expression-validator",
    "category": "developer-tools",
    "built": true,
    "requirements": "Input is limited to 200000 characters. Results are computed locally and exported as JSON.",
    "implementation": {
      "fields": [],
      "registrationFamily": "developer-validators-family",
      "note": "Validate a common SPDX license expression locally and inspect the parsed structure.",
      "experience": {
        "automatic": false,
        "single": false,
        "inputMaxLength": 1000000,
        "inputMode": "text",
        "label": "Your text",
        "placeholder": "Type or paste your input…",
        "help": "Up to 1,000,000 characters. Review the settings before running.",
        "action": null
      },
      "mode": "explicit",
      "interactive": false
    },
    "execution": "Browser interface",
    "api": null,
    "browser_agent": {
      "supported": true,
      "name": "run_current_tool",
      "discovery": "WebMCP on the human page in a supporting browser",
      "verification": "See audit/API-AUDIT.md; availability is not verification"
    }
  },
  "markdown": "# SPDX Expression Validator\n\n- Human page: https://happytails.ai/en/developer-tools/spdx-expression-validator/\n- Markdown: https://happytails.ai/en/developer-tools/spdx-expression-validator.md\n- Structured JSON: https://happytails.ai/agents/en/developer-tools/spdx-expression-validator/index.json\n- Visibility: public\n\n## Tool capabilities\n\n| Property | Value |\n| --- | --- |\n| Tool ID | `spdx-expression-validator` |\n| Category | developer-tools |\n| Implementation | Registered implementation. Registration alone is not a production-quality guarantee. |\n| Browser execution | Use the visible action or interactive controls. |\n| Browser processing | Browser; see tool notes for network behavior. |\n| HTTP API | Not callable through HTTP. |\n| Browser-agent interface | run_current_tool |\n\n### Implementation notes\n\nValidate a common SPDX license expression locally and inspect the parsed structure.\n\n### Inputs and settings\n\nText input: Your text.\n\nExample or placeholder shown in the interface (not a validated fixture):\n\n```text\nType or paste your input…\n```\n\nUp to 1,000,000 characters. Review the settings before running.\n\nNo additional settings are declared for this tool.\n\n### Browser-agent workflow\n\n1. Open the human page in a browser that supports WebMCP.\n2. Discover the interface exposed by that page; use its actual schema.\n3. Select files on the page first when the tool requires files.\n4. Call `run_current_tool` with valid input and settings.\n5. Inspect the returned result or error and the displayed output. Retrieve files from the displayed download links.\n\nCalls do not automatically copy or download results. Browser permissions still apply. Interface availability alone is not proof of successful execution.\n\n### Planning specification\n\nInput is limited to 200000 characters. Results are computed locally and exported as JSON.\n\nThis describes intended requirements. Use the implementation notes, interface schema and observed output to determine current support.\n\n### Complete machine-readable capability record\n\n```json\n{\n  \"id\": \"spdx-expression-validator\",\n  \"category\": \"developer-tools\",\n  \"built\": true,\n  \"requirements\": \"Input is limited to 200000 characters. Results are computed locally and exported as JSON.\",\n  \"implementation\": {\n    \"fields\": [],\n    \"registrationFamily\": \"developer-validators-family\",\n    \"note\": \"Validate a common SPDX license expression locally and inspect the parsed structure.\",\n    \"experience\": {\n      \"automatic\": false,\n      \"single\": false,\n      \"inputMaxLength\": 1000000,\n      \"inputMode\": \"text\",\n      \"label\": \"Your text\",\n      \"placeholder\": \"Type or paste your input…\",\n      \"help\": \"Up to 1,000,000 characters. Review the settings before running.\",\n      \"action\": null\n    },\n    \"mode\": \"explicit\",\n    \"interactive\": false\n  },\n  \"execution\": \"Browser interface\",\n  \"api\": null,\n  \"browser_agent\": {\n    \"supported\": true,\n    \"name\": \"run_current_tool\",\n    \"discovery\": \"WebMCP on the human page in a supporting browser\",\n    \"verification\": \"See audit/API-AUDIT.md; availability is not verification\"\n  }\n}\n```\n\n## Page guide\n\nValidate a common SPDX license expression and report unknown identifiers. Runs locally and returns a reviewable report.\n\nHow can we improve this tool?\n\nReport a problem or share an idea.\n\nPlease leave out private information. Your message and the tool name go to our team via PostHog.\n\n### How to use SPDX Expression Validator\n\n1. Enter the expression or range.\n2. Add any optional values shown.\n3. Run the validator and download the JSON report.\n\n## Review the result\n\nThis tool reports bounded local evidence and does not change your source.\n"
}