5x Stock Empirical Profile

{
  "base_rates": {
    "5x_to_25x": "...",
    "lifetime_5x_rate": "...",
    "median_time_trough_to_5x_months": 0
  },
  "entry_profile": {
    "fcf_yield": "{...}",
    "forward_pe": "{...}",
    "gross_margin": "{...}",
    "market_cap": "{...}"
  },
  "full_content_markdown": "<complete 12-section cited report>",
  "key_takeaways": [
    "<11 headline empirical findings>"
  ],
  "last_updated": "YYYY-MM-DD",
  "return_engine": {
    "earnings_growth": "{...}",
    "multiple_expansion": "{...}"
  },
  "sources": [
    {
      "author": "...",
      "title": "...",
      "url": "..."
    }
  ],
  "summary": "Population-level empirical profile of U.S. stocks that achieved a 5x return...",
  "title": "Empirical Profile of 5x Return Stocks — Population-Level Targeting Specifications",
  "type": "research_report"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://alpha402x.com/5x-stock-empirical-profile'

# 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 - 'https://alpha402x.com/5x-stock-empirical-profile' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// 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 $0.05 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.05" });
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 $0.05 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Falpha402x.com%2F5x-stock-empirical-profile
const res = await pay("https://alpha402x.com/5x-stock-empirical-profile");
console.log(res.status, await res.text());

# 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 $0.05 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.05"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://alpha402x.com/5x-stock-empirical-profile")
    print(res.status_code, res.text)