Avvio rapido
Due host API condividono lo stesso payTo e USDC su Base: il gateway originale e il worker dei tool della wave 1. Questi ultimi offrono una demo gratuita etichettata (?demo=1) e tre chiamate reali gratuite per IP e giorno UTC. Dopo, le chiamate non pagate restituiscono un 402 x402 v2 standard. Campioni etichettati per ogni tool del catalogo sono anche su questo hub, in /demo/{slug}.json.
Prova gratuita
Su https://forge-tools.dentreprise.workers.dev, aggiungi ?demo=1 (o demo=true) all’URL di un tool per un campione o un estratto etichettato — HTTP 200, nessun pagamento, non sono dati live. Anche le prime 3 chiamate reali riuscite per IP client e giorno UTC sono gratuite; quelle fallite non vengono conteggiate. Le chiamate successive non pagate ricevono comunque un 402 x402 v2 valido. Il gateway originale non offre questa prova; usa i file etichettati in /demo/{slug}.json.
curl -sS "https://forge-tools.dentreprise.workers.dev/api/gtin-validate?gtin=3017624010701&demo=1"
Risposta demo etichettata
{
"demo": true,
"demo_label": "DEMO / SAMPLE — not live data. This is a labelled example response and was not charged.",
"charged": false,
"tool": "/api/gtin-validate",
"docs": "https://agent-hub.dentreprise.workers.dev/tools/gtin-validate/",
"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": {
"type": "EAN-13",
"valid": true,
"gtin14": "03017624010701",
"gs1_prefix_region": "France & Monaco"
}
}Guide pratiche a pagamento
Due guide sintetiche dal lavoro di Forge Agent Hub, a 3 $ USDC ciascuna. ?demo=1 restituisce l’indice e un estratto.
playbook-x402-seller
Guida pratica: diventare venditore x402 su Cloudflare Workers.
playbook-mcp-publish
Guida pratica: creare e pubblicare un server MCP nel registro ufficiale.
JavaScript — @x402/fetch
Client ufficiale x402 v2. Installa @x402/fetch e @x402/evm. Il vecchio nome di pacchetto x402-fetch è la linea v1 deprecata e non va usato per questi endpoint.
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/gtin-validate?gtin=3017624010701"
);
console.log(await res.json());Python — x402
Pacchetto ufficiale PyPI x402. Usa x402HttpxClient (async) o x402_requests (sync) dopo 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/gtin-validate?gtin=3017624010701")
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/gtin-validate?gtin=3017624010701").json())Server MCP — forge-agent-mcp
stdio copre l’intero catalogo (entrambi gli host API). Clona forge-agent-mcp e punta il client MCP a src/server.mjs. Il remote Streamable HTTP ospitato sul gateway originale espone ancora solo i tool di quel gateway.
{
"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"
}
}
}Wrapper di strumento LangChain
Avvolgi gli stessi client x402 come strumento 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 gtin_validate = new DynamicStructuredTool({
name: "gtin_validate",
description: "GTIN / EAN-8 / EAN-13 / UPC-A / UPC-E / GTIN-14 validation and normalisation (GS1 check digit): type, expected check digit, corrected code, GTIN-14 and EAN-13 forms, GS1 prefix region, book/coupon flags.",
schema: z.object({}),
func: async (input) => {
const res = await fetchWithPayment("https://forge-tools.dentreprise.workers.dev/api/gtin-validate" + "?" + 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 gtin_validate() -> str:
"""GTIN / EAN-8 / EAN-13 / UPC-A / UPC-E / GTIN-14 validation and normalisation (GS1 check digit): type, expected check digit, corrected code, GTIN-14 and EAN-13 forms, GS1 prefix region, book/coupon flags."""
with x402_requests(client) as session:
return session.get("https://forge-tools.dentreprise.workers.dev/api/gtin-validate").text