# License Intel – License Family Classifier

> License Intel – License Family Classifier is a paid API for AI agents from license-intel.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).

Classifies up to 30 SPDX license IDs by copyleft strength family: public-domain-like, permissive, weak copyleft, strong copyleft, or network copyleft.

## Facts

- Endpoint: GET https://license-intel.x402tookit.com/license-family?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/license-intel-license-family-classifier-4b11d2e0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MoJkNTEYfQYCC4exwfXDz

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability license-intel-license-family-classifier-4b11d2e0
```

Example prompt: Classify these licenses by copyleft strength family: MIT, GPL-3.0, LGPL-2.1, AGPL-3.0, and Apache-2.0 — and tell me which one is the strictest.

## When to prefer this

Use this endpoint when you need to quickly categorize and rank a batch of SPDX license IDs by copyleft strength — especially useful for dependency audits, policy enforcement, and compatibility risk assessment. Prefer this over the compare or lookup endpoints when you have multiple licenses and need a holistic verdict about the strictest constraint in the set rather than a side-by-side comparison or individual license details.

## Known failure modes

- Invalid or unrecognized SPDX IDs returned in notChecked array rather than results
- More than 30 IDs submitted may cause partial or error response
- Missing 'ids' query parameter causes request failure
- Network or payment authorization failure (402 payment required)
- Malformed comma-separated input string may cause parse errors

## How this service works

Classify up to 30 license ids by strength: public-domain-like, permissive, weak copyleft, strong copyleft or network copyleft.

## Output

Returns a per-license array with each SPDX ID's matched canonical ID, family classification (e.g. permissive, strong copyleft), and numeric rank. Also includes an overall verdict, a human-readable summary, the strictest license in the set, a list of any IDs not checked, reasons supporting the verdict, a degraded flag if data quality was reduced, and source/attribution metadata.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "ids"
     ],
     "properties": {
      "ids": {
       "type": "string",
       "description": "SPDX ids separated by commas, e.g. MIT,GPL-3.0,MPL-2.0"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "results": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "object",
        "properties": {
         "id": {
          "type": [
           "null",
           "string"
          ]
         },
         "rank": {
          "type": [
           "null",
           "number"
          ]
         },
         "family": {
          "type": [
           "null",
           "string"
          ]
         },
         "matched": {
          "type": [
           "null",
           "string"
          ]
         }
        }
       }
      },
      "summary": {
       "type": [
        "null",
        "string"
       ]
      },
      "verdict": {
       "type": [
        "null",
        "string"
       ]
      },
      "degraded": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "strictest": {
       "type": [
        "null",
        "object"
       ],
       "properties": {
        "id": {
         "type": [
          "null",
          "string"
         ]
        },
        "family": {
         "type": [
          "null",
          "string"
         ]
        }
       }
      },
      "disclaimer": {
       "type": [
        "null",
        "string"
       ]
      },
      "notChecked": {
       "type": [
        "array",
        "null"
       ],
       
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/license-intel-license-family-classifier-4b11d2e0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from license-intel.x402tookit.com](https://www.zero.xyz/host/license-intel.x402tookit.com/llms.txt)