# Saylor Innovations License Reference

> Saylor Innovations License Reference is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-30).

Returns open-source license facts (permissions, conditions, and limitations) for a given SPDX license identifier such as Apache-2.0

## Facts

- Endpoint: GET https://saylorinnovations.com/api/license/Apache-2.0?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-license-reference-3cd61119
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zhcnae3-ILkiBgMQwCFS9

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 saylor-innovations-license-reference-3cd61119
```

Example prompt: What are the permissions, conditions, and limitations of the Apache-2.0 open-source license?

## When to prefer this

Use this endpoint when you need quick, structured, machine-readable facts about a specific open-source license's permissions, conditions, and limitations by SPDX ID. Prefer it over manual documentation lookup when building compliance checkers, dependency auditors, or legal reference tools for software projects.

## Known failure modes

- Unknown or invalid SPDX license ID returns found: false with null arrays
- Typo in license identifier yields no match
- Extremely obscure or proprietary license identifiers may not be in the dataset

## How this service works

Open-Source License Facts (permissions, conditions, limitations). Open-source license facts by SPDX id: OSI/FSF status, plain-language summary, permissions, conditions and limitations (commercial use, patent grant, disclose source, same license...), copyleft flag, how to apply, optional full text.

## Output

A JSON object indicating whether the license was found, its SPDX identifier, and arrays of permissions (e.g. commercial use, modification, distribution), conditions (e.g. include license, state changes), and limitations (e.g. no liability, no warranty) associated with the specified open-source license.

## 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",
      "POST",
      "PUT",
      "PATCH",
      "DELETE",
      "HEAD"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "found"
     ],
     "properties": {
      "found": {
       "type": "boolean"
      },
      "spdx_id": {
       "type": "string"
      },
      "conditions": {
       "type": [
        "array",
        "null"
       ]
      },
      "limitations": {
       "type": [
        "array",
        "null"
       ]
      },
      "permissions": {
       "type": [
        "array",
        "null"
       ]
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-license-reference-3cd61119/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)