Douane en handel · x402

eu-carbon-customs

Standaard ingebedde emissies van de EU-CBAM (koolstofgrenscorrectie) voor een CN/TARIC-code en een land van oorsprong, uit het officiële defaultwaardenbestand van de Commissie: directe, indirecte en totale tCO2e per ton, productieroute, jaartoeslag, en optioneel ingebedde emissies en certificaatkosten voor een zending (tonnen, EUR-prijs).

0.003 USDC / aanroep · {atomic} atomair · 3000 atomic

Eindpunt

GET|POST https://forge-tools.dentreprise.workers.dev/api/eu-carbon-customs

Parameters

Naam	Verplicht	Type	Beschrijving
`cn`	Verplicht	string	CN/TARIC code 4-10 digits
`country`	Verplicht	string	Origin country name or ISO alpha-2
`year`	Optioneel	string	2026+
`tonnes`	Optioneel	string	Shipment mass in tonnes (optional)
`price_eur`	Optioneel	string	CBAM certificate price EUR/tCO2e (optional)

Voorbeeldverzoek (onbetaald — verwacht 402)

curl -sS -D - "https://forge-tools.dentreprise.workers.dev/api/eu-carbon-customs?cn=72081000&country=CN&tonnes=100&price_eur=75"

Voorbeeld van een 402-challenge

Hetzelfde object wordt ook als base64-header PAYMENT-REQUIRED verstuurd. Bedragen zijn atomaire USDC-eenheden (6 decimalen).

{
  "x402Version": 2,
  "error": "Payment required",
  "resource": {
    "url": "https://forge-tools.dentreprise.workers.dev/api/eu-carbon-customs",
    "description": "EU CBAM (carbon border adjustment) default embedded emissions for a CN/TARIC code and country of origin, from the official Commission default-values file: direct, indirect and total tCO2e per tonne, production route, year mark-up, and optional embedded emissions and certificate cost for a shipment (tonnes, EUR price).",
    "mimeType": "application/json"
  },
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "amount": "3000",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0x7B8bf45ac6AcbA6D4CFB626b57D3f5fF3C9C89F7",
      "maxTimeoutSeconds": 120,
      "extra": {
        "name": "USD Coin",
        "version": "2"
      }
    }
  ]
}

Opnieuw proberen met betaling

curl -sS "https://forge-tools.dentreprise.workers.dev/api/eu-carbon-customs?cn=72081000&country=CN&tonnes=100&price_eur=75" \
  -H "PAYMENT-SIGNATURE: $PAYMENT"

Voorbeeldantwoord

{
  "cn": "72081000",
  "country_table": "China",
  "items": [
    {
      "description": "Flat-rolled products…",
      "total": 2.5,
      "total_with_markup": 2.75,
      "embedded_emissions_t": 275
    }
  ]
}

Gratis demo / voorbeeld

Deze tool staat op de wave-1-worker. ?demo=1 geeft een gelabeld voorbeeld of fragment terug met HTTP 200 en zonder betaling. De body is geen livedata. De eerste 3 geslaagde echte aanroepen per IP per UTC-dag zijn ook gratis.

curl -sS "https://forge-tools.dentreprise.workers.dev/api/eu-carbon-customs?cn=72081000&country=CN&tonnes=100&price_eur=75&demo=1"

Gelabeld demo-antwoord

{
  "demo": true,
  "demo_label": "DEMO / SAMPLE — not live data. This is a labelled example response and was not charged.",
  "charged": false,
  "tool": "/api/eu-carbon-customs",
  "docs": "https://agent-hub.dentreprise.workers.dev/tools/eu-carbon-customs/",
  "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": {
    "cn": "72081000",
    "country_table": "China",
    "items": [
      {
        "description": "Flat-rolled products…",
        "total": 2.5,
        "total_with_markup": 2.75,
        "embedded_emissions_t": 275
      }
    ]
  }
}

JavaScript — @x402/fetch

Officiële x402-v2-client. Installeer @x402/fetch en @x402/evm. De oudere pakketnaam x402-fetch is de verouderde v1-lijn en moet niet voor deze endpoints worden gebruikt.

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/eu-carbon-customs?cn=72081000&country=CN&tonnes=100&price_eur=75"
);
console.log(await res.json());

Python — x402

Officieel PyPI-pakket x402. Gebruik x402HttpxClient (async) of x402_requests (sync) na register_exact_evm_client met 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/eu-carbon-customs?cn=72081000&country=CN&tonnes=100&price_eur=75")
        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/eu-carbon-customs?cn=72081000&country=CN&tonnes=100&price_eur=75").json())

MCP-server — forge-agent-mcp

stdio dekt de volledige catalogus (beide API-hosts). Clone forge-agent-mcp en wijs je MCP-client naar src/server.mjs. De gehoste Streamable-HTTP-remote op de oorspronkelijke gateway biedt nog steeds alleen de oorspronkelijke gateway-tools.

{
  "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"
    }
  }
}

LangChain-toolwrapper

Pak dezelfde x402-clients in als LangChain-tool met DynamicStructuredTool (@langchain/core) of @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 eu_carbon_customs = new DynamicStructuredTool({
  name: "eu_carbon_customs",
  description: "EU CBAM (carbon border adjustment) default embedded emissions for a CN/TARIC code and country of origin, from the official Commission default-values file: direct, indirect and total tCO2e per tonne, production route, year mark-up, and optional embedded emissions and certificate cost for a shipment (tonnes, EUR price).",
  schema: z.object({}),
  func: async (input) => {
    const res = await fetchWithPayment("https://forge-tools.dentreprise.workers.dev/api/eu-carbon-customs" + "?" + 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 eu_carbon_customs() -> str:
    """EU CBAM (carbon border adjustment) default embedded emissions for a CN/TARIC code and country of origin, from the official Commission default-values file: direct, indirect and total tCO2e per tonne, production route, year mark-up, and optional embedded emissions and certificate cost for a shipment (tonnes, EUR price)."""
    with x402_requests(client) as session:
        return session.get("https://forge-tools.dentreprise.workers.dev/api/eu-carbon-customs").text