# Open Dataset Finder with Licence Verdict

> Open Dataset Finder with Licence Verdict is a paid API for AI agents from apexfaucet.xyz, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-01).

Search Zenodo's 700k+ open research datasets by plain-language query and receive a clear licence verdict (public domain, attribution, share-alike, no-derivatives, non-commercial) for each result.

## Facts

- Endpoint: GET https://apexfaucet.xyz/api/x402/dataset-finder?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/open-dataset-finder-with-licence-verdict-c8b50069
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_u-q3lkz9gkG90HgfuSazb

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 open-dataset-finder-with-licence-verdict-c8b50069
```

Example prompt: Find me up to 10 open research datasets about electricity prices that allow commercial use — I need to know the licence for each one so I can decide if I can use them in my product.

## When to prefer this

Use this endpoint when you need to discover open research datasets from Zenodo and require upfront licence clarity before use — especially when commercial use, redistribution, or derivative work constraints matter. Prefer this over generic web search when you need machine-readable licence verdicts rather than having to interpret licence text yourself.

## Known failure modes

- Missing or too-short query string (q under 2 characters) returns validation error
- size parameter outside 1-20 range rejected
- No matching datasets found for highly niche query returns empty list
- Licence verdict may be 'not stated' if depositor did not provide structured licence metadata
- Payment failure (x402) if USDC balance insufficient

## How this service works

Find open research datasets with a plain licence verdict per dataset: public domain, attribution, share-alike, no-derivatives, non-commercial. Find open datasets you are allowed to use. Pass ?q=electricity prices and get research datasets from Zenodo (700k+), each with a plain licence verdict read from the depositor's structured licence: public domain, attribution (credit needed), share-alike (derived data must carry the same licence), no-derivatives, non-commercial or not stated.

## Output

A list of up to 20 research datasets from Zenodo, each with its title, a plain-language licence verdict (public domain, attribution, share-alike, no-derivatives, non-commercial, or not stated), and metadata needed to locate and cite the dataset.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "queryParams"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string",
       "maxLength": 200,
       "minLength": 2,
       "description": "What data you need, in plain words."
      },
      "size": {
       "type": "string",
       "pattern": "^[0-9]{1,2}$",
       "description": "How many datasets, 1-20 (default 10)."
      },
      "sort": {
       "enum": [
        "bestmatch",
        "mostrecent"
       ],
       "type": "string",
       "description": "bestmatch (default) or mostrecent."
      },
      "licence": {
       "enum": [
        "commercial",
        "any"
       ],
       "type": "string",
       "description": "commercial (default) returns only datasets whose licence allows commercial use; any returns all with a verdict each."
      }
     }
    }
   }
  },
  "output": {
   "type": "object"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/open-dataset-finder-with-licence-verdict-c8b50069/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apexfaucet.xyz](https://www.zero.xyz/host/apexfaucet.xyz/llms.txt)