Sellcheck

Last 30 days

Uptime

100%

Response time

178 ms typical, 178 ms slowest 5%

Last check

3 h ago

Next check

any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://base-facts.yankii.fr/v1/sellcheck" \
  -H "content-type: application/json" \
  -d '{"token":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}'

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.03:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fbase-facts.yankii.fr%2Fv1%2Fsellcheck
const res = await pay("https://base-facts.yankii.fr/v1/sellcheck", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"token":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}),
});
console.log(await res.json());

Example input

{
  "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
}

Example output

{
  "blockNumber": "52159737",
  "disclaimer": "eth_call simulation at block 52159737: a small buy with WETH and an immediate sell on the token's deepest WETH pools. Not a guarantee: the token's code or owner can change, and some tokens treat addresses or sizes differently. Not financial advice.",
  "flags": [
    {
      "fact": "Bought with 0.01 WETH and sold straight back on uniswap-v3 pool 0x6c561B446416E1A00E8E93E221854d6eA4171372 at block 52159737 (eth_call simulation): round-trip loss 0.6%, which includes a 0.30% pool fee paid twice and any token tax.",
      "id": "sell_ok",
      "severity": "info"
    }
  ],
  "name": "USD Coin",
  "simulation": {
    "amounts": {
      "tokenReachedPool": null,
      "tokenReceived": "26912247",
      "tokenReleasedByPool": "26912247",
      "tokenSent": "26912247",
      "wethOut": "9940089592377343"
    },
    "attempts": [
      {
        "dex": "uniswap-v3",
        "fee": 3000,
        "ok": true,
        "pool": "0x6c561B446416E1A00E8E93E221854d6eA4171372",
        "wethIn": "10000000000000000"
      }
    ],
    "buyTaxPct": 0,
    "dex": "uniswap-v3",
    "fee": 3000,
    "pool": "0x6c561B446416E1A00E8E93E221854d6eA4171372",
    "roundTripLossPct": 0.6,
    "sellTaxPct": null,
    "status": "ok",
    "wethIn": "10000000000000000"
  },
  "source": "base-mainnet-rpc",
  "summary": "USDC: Simulated buy and sell on uniswap-v3: no transfer tax, round-trip loss 0.6%.",
  "symbol": "USDC",
  "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
}

Security scan

• No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

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