# Delx Open Entity Search

> Delx Open Entity Search is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-20).

Search Wikidata-backed entity metadata (stable IDs, labels, descriptions, source links) for public places, companies, and concepts

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/open-entities-search?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-open-entity-search-536ef0b6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rzT9HcSqekM0xTGV9LIFt

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 delx-open-entity-search-536ef0b6 -d '<json body>'
```

Example prompt: Search for the Wikidata entity metadata for 'TSMC' — I need its stable ID, label, and description, up to 5 results.

## When to prefer this

Choose this endpoint when you need stable, citable Wikidata entity identifiers and descriptions for public entities (companies, places, concepts) rather than geocoordinates, navigation data, contact details, or general web search results. Prefer it over general search when you need structured linked-data metadata with canonical Q-number IDs for knowledge graph enrichment or entity resolution at low cost ($0.001 per call).

## Known failure modes

- Query string too short or empty — returns validation error
- Wikidata upstream timeout — no results returned within the configured timeout window
- Query matches no known entities — returns empty result set
- max_records out of range (less than 1 or greater than 10) — returns schema validation error
- timeout out of range (less than 2 or greater than 8) — returns schema validation error
- Payment not processed — x402 payment required error

## How this service works

Search bounded Wikidata entity metadata for $0.001 USDC. Returns stable IDs, labels, descriptions and source links for public places, companies and concepts—not geocoding, navigation, contact data, personal profiling or general web search.

## Output

A list of up to 10 Wikidata entity results, each containing a stable entity ID (e.g. Q-number), human-readable label, short description, and source links — bounded to public entities like places, companies, and concepts. No geocoordinates, contact info, or personal profile data.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "maxLength": 120,
   "minLength": 1
  },
  "timeout": {
   "type": "integer",
   "default": 8,
   "maximum": 8,
   "minimum": 2
  },
  "max_records": {
   "type": "integer",
   "default": 10,
   "maximum": 10,
   "minimum": 1
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "cache": "miss",
   "count": 1,
   "query": "Fortaleza",
   "scope": "open_entities",
   "schema": "delx/open-entities-search/v1",
   "results": [
    {
     "id": "Q43433",
     "url": "https://www.wikidata.org/wiki/Q43433",
     "label": "Fortaleza",
     "concept_uri": "https://www.wikidata.org/entity/Q43433",
     "description": "municipality in Brazil"
    }
   ],
   "language": "en",
   "provider": "Wikidata",
   "attribution": "Structured data supplied by Wikidata under CC0; preserve the entity ID and source link. This result contains public entity metadata only.",
   "license_url": "https://creativecommons.org/publicdomain/zero/1.0/",
   "max_records": 3,
   "provider_url": "https://www.wikidata.org/"
  },
  "tool_name": "search_open_entities"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-open-entity-search-536ef0b6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)