Dex Liquidity Slippage

{
  "assumed_gas_cost_usd": 0.05,
  "data_source": "geckoterminal",
  "estimated_slippage_pct": 0.08,
  "generated_at": {
    "kst": "2026-09-04 21:00:00 KST",
    "utc": "2026-09-04T12:00:00Z"
  },
  "liquidity_usd": 25000000,
  "network": "base",
  "notice": "Slippage is an approximation computed only from the pool's aggregate USD liquidity as reported by GeckoTerminal - it assumes the pool is a standard constant-product (x*y=k) AMM with the two tokens in a 50:50 ratio. Actual slippage can differ significantly for Uniswap v3-style concentrated-liquidity pools or stableswap pools - always re-verify with an on-chain quote before trading. slippage_tiers uses the same approximation at three fixed sizes regardless of the trade_size_usd you passed in; warning_level thresholds (LOW <1%, MEDIUM 1-3%, HIGH >3%) are AlphaPipeline's own heuristic, not an industry standard. assumed_gas_cost_usd is a flat per-swap estimate, not a live gas quote. quote_token_is_stablecoin tells you whether this pool's quote side is a USD stablecoin - if false or null, converting to USD requires an additional hop this estimate does not account for.",
  "pool_address": "0xd0b53d9277642d899df5c87a3966a349a798f224",
  "pool_fee_pct": 0.05,
  "pool_name": "WETH / USDC 0.05%",
  "price_impact_model": "constant_product_50_50_approximation",
  "quote_token_is_stablecoin": true,
  "quote_token_symbol": "USDC",
  "slippage_tiers": [
    {
      "estimated_price_impact_pct": 0.008,
      "trade_size_usd": 1000,
      "warning_level": "LOW"
    },
    {
      "estimated_price_impact_pct": 0.04,
      "trade_size_usd": 5000,
      "warning_level": "LOW"
    },
    {
      "estimated_price_impact_pct": 0.08,
      "trade_size_usd": 10000,
      "warning_level": "LOW"
    }
  ],
  "token_address": null,
  "trade_size_usd": 10000,
  "volume_24h_usd": 8500000
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://alphapipeline-eu.onrender.com/v1/dex/liquidity-slippage?network=base&token_address=0x4200000000000000000000000000000000000006&trade_size_usd=10000'

# 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://alphapipeline-eu.onrender.com/v1/dex/liquidity-slippage?network=base&token_address=0x4200000000000000000000000000000000000006&trade_size_usd=10000' \
  | 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 $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
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 $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Falphapipeline-eu.onrender.com%2Fv1%2Fdex%2Fliquidity-slippage
const res = await pay("https://alphapipeline-eu.onrender.com/v1/dex/liquidity-slippage?network=base&token_address=0x4200000000000000000000000000000000000006&trade_size_usd=10000");
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 $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://alphapipeline-eu.onrender.com/v1/dex/liquidity-slippage?network=base&token_address=0x4200000000000000000000000000000000000006&trade_size_usd=10000")
    print(res.status_code, res.text)