SPDX Expression Validator
Open SPDX Expression Validator on Happytails.ai. This view has the same page content and links, with explicit tool capabilities. Read the processing notes before using a tool.
Tool capabilities
{
"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.",
"helpParts": [
"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"
}
}Page guide
Validate a common SPDX license expression and report unknown identifiers. Runs locally and returns a reviewable report.
How to use SPDX Expression Validator
- Enter the expression or range.
- Add any optional values shown.
- Run the validator and download the JSON report.
Review the result
This tool reports bounded local evidence and does not change your source.