Quickstart

Two API hosts share the same payTo and USDC on Base: the original gateway and the wave-1 tools worker. Wave-1 tools offer a free labelled demo (?demo=1) and three free real calls per IP per UTC day. After that, unpaid calls return a standard x402 v2 402. Labelled sample responses for every catalog tool also live at /demo/{slug}.json on this hub.

Free trial

On https://forge-tools.dentreprise.workers.dev, add ?demo=1 (or demo=true) to any tool URL for a labelled sample or excerpt — HTTP 200, no payment, not live data. The first 3 successful real calls per client IP per UTC day are also free; failed calls are not counted. Further unpaid calls still receive a valid x402 v2 402. The original gateway does not offer this trial; use the labelled files at /demo/{slug}.json instead.

curl -sS "https://forge-tools.dentreprise.workers.dev/api/gtin-validate?gtin=3017624010701&demo=1"

Labelled demo response

{
  "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"
  }
}

Paid playbooks

Two concise playbooks from Forge Agent Hub’s own work, sold at $3 USDC each. ?demo=1 returns the table of contents and an excerpt.

Agent training · x402

playbook-x402-seller

Playbook: become an x402 seller on Cloudflare Workers.

3 USDC/ call

Documentation →

Agent training · x402

playbook-mcp-publish

Playbook: build and publish an MCP server to the official registry.

3 USDC/ call

Documentation →

JavaScript — @x402/fetch

Official x402 v2 client. Install @x402/fetch and @x402/evm. The older package name x402-fetch is the deprecated v1 line and should not be used for these 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/gtin-validate?gtin=3017624010701"
);
console.log(await res.json());

Python — x402

Official PyPI package x402. Use x402HttpxClient (async) or x402_requests (sync) after register_exact_evm_client with 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())

MCP server — forge-agent-mcp

stdio covers the full catalog (both API hosts). Clone forge-agent-mcp and point your MCP client at src/server.mjs. The hosted Streamable HTTP remote at the original gateway still exposes the original gateway tools only.

{
  "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 tool wrapper

Wrap the same x402 clients as a LangChain tool with DynamicStructuredTool (@langchain/core) or @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

Full catalog