Conocimiento · x402

wikidata-entity

Consulta de entidades Wikidata por Q-id o texto de búsqueda: etiqueta, descripción, alias en un idioma elegido, declaraciones clave (instancia de, país, coordenadas, fundación, sitio web, población, sede, fundadores, sector, identificadores como LEI/ticker/ISNI…) con etiquetas resueltas, enlace a Wikipedia.

0.002 USDC / llamada · {atomic} atómico · 2000 atomic

Endpoint

GET|POST https://forge-tools.dentreprise.workers.dev/api/wikidata-entity

Parámetros

Nombre	Obligatorio	Tipo	Descripción
`id`	Opcional	string	Q-id
`q`	Opcional	string	Search text (alternative)
`lang`	Opcional	string	Language code, default en

Ejemplo de petición (sin pagar — se espera 402)

curl -sS -D - "https://forge-tools.dentreprise.workers.dev/api/wikidata-entity?q=Annecy&lang=fr"

Ejemplo de desafío 402

El mismo objeto se envía también como cabecera PAYMENT-REQUIRED en base64. Las cantidades son unidades atómicas de USDC (6 decimales).

{
  "x402Version": 2,
  "error": "Payment required",
  "resource": {
    "url": "https://forge-tools.dentreprise.workers.dev/api/wikidata-entity",
    "description": "Wikidata entity lookup by Q-id or search text: label, description, aliases in a chosen language, key claims (instance of, country, coordinates, inception, website, population, HQ, founders, industry, identifiers such as LEI/ticker/ISNI…) with resolved labels, Wikipedia link.",
    "mimeType": "application/json"
  },
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "amount": "2000",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0x7B8bf45ac6AcbA6D4CFB626b57D3f5fF3C9C89F7",
      "maxTimeoutSeconds": 120,
      "extra": {
        "name": "USD Coin",
        "version": "2"
      }
    }
  ]
}

Reintentar con pago

curl -sS "https://forge-tools.dentreprise.workers.dev/api/wikidata-entity?q=Annecy&lang=fr" \
  -H "PAYMENT-SIGNATURE: $PAYMENT"

Ejemplo de respuesta

{
  "id": "Q50189",
  "label": "Annecy",
  "claims": {
    "country": [
      {
        "id": "Q142",
        "label": "France"
      }
    ]
  }
}

Demo / muestra gratuita

Esta herramienta está en el worker de la oleada 1. ?demo=1 devuelve una muestra o un extracto etiquetado con HTTP 200 y sin pago. El cuerpo no son datos en vivo. Las 3 primeras llamadas reales con éxito por IP y día UTC también son gratuitas.

curl -sS "https://forge-tools.dentreprise.workers.dev/api/wikidata-entity?q=Annecy&lang=fr&demo=1"

Respuesta de demo etiquetada

{
  "demo": true,
  "demo_label": "DEMO / SAMPLE — not live data. This is a labelled example response and was not charged.",
  "charged": false,
  "tool": "/api/wikidata-entity",
  "docs": "https://agent-hub.dentreprise.workers.dev/tools/wikidata-entity/",
  "how_to_get_live_data": "Call the same URL without demo=1. The first 3 successful real calls per IP per UTC day are free; after that attach an x402 v2 PAYMENT-SIGNATURE (USDC on Base).",
  "sample": {
    "id": "Q50189",
    "label": "Annecy",
    "claims": {
      "country": [
        {
          "id": "Q142",
          "label": "France"
        }
      ]
    }
  }
}

JavaScript — @x402/fetch

Cliente oficial x402 v2. Instale @x402/fetch y @x402/evm. El nombre de paquete antiguo x402-fetch es la línea v1 obsoleta y no debe usarse con estos endpoints.

import { wrapFetchWithPaymentFromConfig } from "@x402/fetch";
import { ExactEvmScheme } from "@x402/evm";
import { privateKeyToAccount } from "viem/accounts";

// Official x402 v2 client. The older package name "x402-fetch" is the deprecated v1 line.
const account = privateKeyToAccount(process.env.EVM_PRIVATE_KEY);
const fetchWithPayment = wrapFetchWithPaymentFromConfig(fetch, {
  schemes: [{ network: "eip155:8453", client: new ExactEvmScheme(account) }],
});

const res = await fetchWithPayment(
  "https://forge-tools.dentreprise.workers.dev/api/wikidata-entity?q=Annecy&lang=fr"
);
console.log(await res.json());

Python — x402

Paquete oficial de PyPI x402. Use x402HttpxClient (async) o x402_requests (sync) tras register_exact_evm_client con EthAccountSigner.

import asyncio
import os
from eth_account import Account
from x402 import x402Client
from x402.http.clients import x402HttpxClient
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Official PyPI package: x402
account = Account.from_key(os.environ["EVM_PRIVATE_KEY"])
client = x402Client()
register_exact_evm_client(client, EthAccountSigner(account))

async def main():
    async with x402HttpxClient(client) as http:
        res = await http.get("https://forge-tools.dentreprise.workers.dev/api/wikidata-entity?q=Annecy&lang=fr")
        print(res.json())

asyncio.run(main())

# Sync alternative:
# from x402 import x402ClientSync
# from x402.http.clients import x402_requests
# client = x402ClientSync()
# register_exact_evm_client(client, EthAccountSigner(account))
# with x402_requests(client) as session:
#     print(session.get("https://forge-tools.dentreprise.workers.dev/api/wikidata-entity?q=Annecy&lang=fr").json())

Servidor MCP — forge-agent-mcp

stdio cubre el catálogo completo (ambos hosts de API). Clone forge-agent-mcp y apunte su cliente MCP a src/server.mjs. El remoto Streamable HTTP alojado en la pasarela original sigue exponiendo solo las herramientas de esa pasarela.

{
  "mcpServers": {
    "forge-agent-hub": {
      "command": "node",
      "args": ["/path/to/forge-agent-mcp/src/server.mjs"]
    },
    "forge-agent-api": {
      "url": "https://x402-gateway.forge-x402.workers.dev/mcp",
      "transport": "streamable-http"
    }
  }
}

Contenedor de herramienta LangChain

Envuelva los mismos clientes x402 como herramienta LangChain con DynamicStructuredTool (@langchain/core) o @tool (langchain_core).

import { DynamicStructuredTool } from "@langchain/core/tools";
import { z } from "zod";
import { wrapFetchWithPaymentFromConfig } from "@x402/fetch";
import { ExactEvmScheme } from "@x402/evm";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.EVM_PRIVATE_KEY);
const fetchWithPayment = wrapFetchWithPaymentFromConfig(fetch, {
  schemes: [{ network: "eip155:8453", client: new ExactEvmScheme(account) }],
});

export const wikidata_entity = new DynamicStructuredTool({
  name: "wikidata_entity",
  description: "Wikidata entity lookup by Q-id or search text: label, description, aliases in a chosen language, key claims (instance of, country, coordinates, inception, website, population, HQ, founders, industry, identifiers such as LEI/ticker/ISNI…) with resolved labels, Wikipedia link.",
  schema: z.object({}),
  func: async (input) => {
    const res = await fetchWithPayment("https://forge-tools.dentreprise.workers.dev/api/wikidata-entity" + "?" + new URLSearchParams(input));
    return JSON.stringify(await res.json());
  },
});

import os
from langchain_core.tools import tool
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

account = Account.from_key(os.environ["EVM_PRIVATE_KEY"])
client = x402ClientSync()
register_exact_evm_client(client, EthAccountSigner(account))

@tool
def wikidata_entity() -> str:
    """Wikidata entity lookup by Q-id or search text: label, description, aliases in a chosen language, key claims (instance of, country, coordinates, inception, website, population, HQ, founders, industry, identifiers such as LEI/ticker/ISNI…) with resolved labels, Wikipedia link."""
    with x402_requests(client) as session:
        return session.get("https://forge-tools.dentreprise.workers.dev/api/wikidata-entity").text