Narrative Check

{
  "address": "0x…",
  "chain": "base",
  "claims": [
    {
      "claim": "Liquidity locked for 12 months",
      "on_chain_observation": "LP lock/burn share observed at 4.2% — locked share does not match a full-lock claim",
      "status": "inconsistent",
      "topic": "liquidity"
    },
    {
      "claim": "1,000,000,000 total supply",
      "on_chain_observation": "On-chain total supply reads 1,000,000,000",
      "status": "consistent",
      "topic": "supply"
    },
    {
      "claim": "Team tokens vested for 2 years",
      "on_chain_observation": "Provided data cannot identify team wallets or vesting contracts",
      "status": "unverifiable_on_chain",
      "topic": "team_holdings"
    }
  ],
  "counts": {
    "checked": 9,
    "consistent": 5,
    "inconsistent": 1,
    "unverifiable_on_chain": 3
  },
  "disclaimer": "Point-in-time consistency observations between a project's public statements and observable on-chain data. \"Not supported by on-chain data\" describes a data mismatch at the time of the check — it is not an accusation of wrongdoing or intent. Not financial, legal or investment advice; never a recommendation to buy, sell or avoid any asset.",
  "explorer": "https://basescan.org/token/0x…",
  "imposter_screen": {
    "site_live": true,
    "socials_on_site": [
      "https://x.com/example"
    ],
    "token_trading": true,
    "trading_while_site_dead": false
  },
  "notable_absences": [
    "No contract address listed on the site"
  ],
  "site": {
    "live": true,
    "title": "Example Protocol",
    "url": "https://example.xyz"
  }
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://onchainpulse.theaslangroupllc.com/api/narrative-check?address=0x532f27101965dd16442E59d40670FaF5eBB142E4&chain=base&url=brett.xyz'

# 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://onchainpulse.theaslangroupllc.com/api/narrative-check?address=0x532f27101965dd16442E59d40670FaF5eBB142E4&chain=base&url=brett.xyz' \
  | 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 $0.15 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.15" });
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 $0.15 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fonchainpulse.theaslangroupllc.com%2Fapi%2Fnarrative-check
const res = await pay("https://onchainpulse.theaslangroupllc.com/api/narrative-check?address=0x532f27101965dd16442E59d40670FaF5eBB142E4&chain=base&url=brett.xyz");
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 $0.15 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.15"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://onchainpulse.theaslangroupllc.com/api/narrative-check?address=0x532f27101965dd16442E59d40670FaF5eBB142E4&chain=base&url=brett.xyz")
    print(res.status_code, res.text)