ToolVet
81trust / 100

Open Entities Search

by Open Entities for Agents in Search & web

x402 APIPassing, checked 2 h ago

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.

POST
https://api.delx.ai/api/v1/x402/open-entities-search
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
10 ms
49 ms slowest 5%
Last check
Passed
2 h ago, next any minute now

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://api.delx.ai/api/v1/x402/open-entities-search

Each call costs $0.001 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://api.delx.ai/api/v1/x402/open-entities-search
content-type: application/json

{
  "max_records": 3,
  "query": "Fortaleza"
}

Parameters

ParameterTypeRequiredDescription
max_recordsintegerNo Default: 10.
querystringYes
timeoutintegerNo Default: 8.

Example response

The provider's example. We can't check it without paying.

{
  "result": {
    "attribution": "Structured data supplied by Wikidata under CC0; preserve the entity ID and source link. This result contains public entity metadata only. Query/results may remain in process memory until lazy expiry, eviction or process exit; 300 seconds is serving validity, not a deletion guarantee.",
    "cache": "miss",
    "count": 1,
    "language": "en",
    "license_url": "https://creativecommons.org/publicdomain/zero/1.0/",
    "max_records": 3,
    "provider": "Wikidata",
    "provider_url": "https://www.wikidata.org/",
    "query": "Fortaleza",
    "results": [
      {
        "concept_uri": "https://www.wikidata.org/entity/Q43433",
        "description": "municipality in Brazil",
        "id": "Q43433",
        "label": "Fortaleza",
        "url": "https://www.wikidata.org/wiki/Q43433"
      }
    ],
    "schema": "delx/open-entities-search/v1",
    "scope": "open_entities"
  },
  "tool_name": "search_open_entities"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.001.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.delx.ai/api/v1/x402/open-entities-search' \
  -H 'content-type: application/json' \
  --data-raw '{"max_records":3,"query":"Fortaleza"}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://api.delx.ai/api/v1/x402/open-entities-search' \
  -H 'content-type: application/json' \
  --data-raw '{"max_records":3,"query":"Fortaleza"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.delx.ai%2Fapi%2Fv1%2Fx402%2Fopen-entities-search&method=POST
const res = await pay("https://api.delx.ai/api/v1/x402/open-entities-search", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "max_records": 3,
    "query": "Fortaleza"
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.delx.ai/api/v1/x402/open-entities-search",
        json={
            "max_records": 3,
            "query": "Fortaleza",
        },
    )
    print(res.status_code, res.text)

Security scan

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