# Wikidata Facts – Entity Facts

> Wikidata Facts – Entity Facts is a paid API for AI agents from wikidata-facts.x402tookit.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-21).

Returns structured facts for a single Wikidata entity: label, description, aliases, instance-of classification, Wikipedia links, and key external identifiers.

## Facts

- Endpoint: GET https://wikidata-facts.x402tookit.com/entity-facts?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/wikidata-facts-entity-facts-5f0095dd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3vUDRT5Qs29JRrYvgUawC

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 wikidata-facts-entity-facts-5f0095dd
```

Example prompt: Look up the Wikidata facts for the Eiffel Tower — I need its label, description, aliases, what type of thing it is (instance-of), and any Wikipedia or external identifier links.

## When to prefer this

Use this endpoint when you need a quick, structured fact-sheet for a single known entity (by Q-id or unambiguous name) and want label, description, aliases, instance-of, Wikipedia links, and external identifiers in one call. Prefer it over a full Wikidata SPARQL query when you don't need deep property traversal. Use the sibling search endpoint first if you only have an ambiguous name and need to resolve it to a Q-id.

## Known failure modes

- Unknown or malformed Q-id returns null or empty result
- Ambiguous name with no hint may resolve to the wrong entity or return alternatives list
- Entity exists but has no English label — label field may be null
- Rate limiting or payment failure returns 402 or 429 status
- Entity with very few statements may return sparse data with many null fields

## How this service works

Facts for one Wikidata entity: label, description, aliases, instance-of, Wikipedia links and key identifiers.

## Output

A structured object containing the entity's Wikidata Q-id, human-readable label, description, list of aliases, instance-of array (with Q-ids and labels), Wikipedia link (English title and URL, plus edition count), and an array of external identifiers (name, property, value, and URL). Also includes statement count, last-modified date, resolution method, and attribution.

## 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": [
      "id"
     ],
     "properties": {
      "id": {
       "type": "string",
       "description": "Wikidata Q-id or a name, e.g. Q90 or Eiffel Tower"
      },
      "hint": {
       "type": "string",
       "description": "Optional words to disambiguate a name"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "url": {
       "type": [
        "null",
        "string"
       ]
      },
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "label": {
       "type": [
        "null",
        "string"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "aliases": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ]
      },
      "summary": {
       "type": [
        "null",
        "string"
       ]
      },
      "verdict": {
       "type": [
        "null",
        "string"
       ]
      },
      "degraded": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "sourceUrl": {
       "type": [
        "null",
        "string"
       ]
      },
      "wikipedia": {
       "type": [
        "null",
        "object"
       ],
       "properties": {
        "english": {
         "type": [
          "null",
          "object"
         ],
         "properties": {
          "url": {
           "type": [
            "null",
            "string"
           ]
          },
          "title": {
           "type": [
            "null",
            "string"
           ]
          }
         }
        },
        "editions": {
         "type": [
          "null",
          "number"
         ]
        }
       }
      },
      "disclaimer": {
       "type": [
        "null",

… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/wikidata-facts-entity-facts-5f0095dd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from wikidata-facts.x402tookit.com](https://www.zero.xyz/host/wikidata-facts.x402tookit.com/llms.txt)