Unicode Char

{
  "asOf": "2026-10-11T14:26:47.168Z",
  "block": "Emoticons",
  "character": "😀",
  "codePoint": "U+1F600",
  "cssEscape": "\\1F600 ",
  "decimal": 128512,
  "degraded": false,
  "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
  "generalCategory": "So",
  "generalCategoryName": "Other Symbol",
  "htmlDecimal": "😀",
  "htmlHex": "😀",
  "javascriptEscape": "\\u{1F600}",
  "javascriptSurrogatePair": "\\uD83D\\uDE00",
  "name": "GRINNING FACE",
  "nameCoverage": "about 59 common blocks plus algorithmic Hangul and CJK names",
  "nameSource": "UnicodeData.txt",
  "noncharacter": false,
  "notChecked": [
    "names are embedded for about 59 common blocks only (others return name null, with block and category still given)",
    "bare digits are read as DECIMAL; use U+ or 0x for hexadecimal",
    "…3 more"
  ],
  "plane": 1,
  "planeName": "Supplementary Multilingual Plane",
  "reasons": [
    "Name source: UnicodeData.txt."
  ],
  "scalarValue": true,
  "source": "Unicode Character Database 18.0.0 (UnicodeData.txt and Blocks.txt, retrieved 2026-10-11), embedded tables",
  "summary": "U+1F600 GRINNING FACE: other symbol in Emoticons, UTF-8 F0 9F 98 80.",
  "unicodeVersion": "18.0.0",
  "urlEncoded": "%F0%9F%98%80",
  "utf16": "D83D DE00",
  "utf16Units": 2,
  "utf32": "0001F600",
  "utf8": "F0 9F 98 80",
  "utf8ByteCount": 4,
  "valid": true,
  "verdict": "FOUND"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://dev-reference.x402tookit.com/unicode-char?cp=U%2B1F600'

# 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://dev-reference.x402tookit.com/unicode-char?cp=U%2B1F600' \
  | 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%2Fdev-reference.x402tookit.com%2Funicode-char
const res = await pay("https://dev-reference.x402tookit.com/unicode-char?cp=U%2B1F600");
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://dev-reference.x402tookit.com/unicode-char?cp=U%2B1F600")
    print(res.status_code, res.text)