Analyze Diff

{
  "interactions": [],
  "meta": {
    "disclaimer": {
      "en": "Every record is a draft and needs verification. This is not a safety judgement: it returns what each jurisdiction has officially decided, the differences between them, and the sources.",
      "ja": "全件ドラフト＝要検証。安全/危険の判定ではなく、各法域の公的判断の差分と根拠を返す。"
    },
    "last_verified": "2026-09-24",
    "sources": "/v1/sources"
  },
  "scope": {
    "alias_langs": [
      "ja"
    ],
    "axis": "JP",
    "lang": "ja"
  },
  "tokens": [
    {
      "matches": [
        {
          "axis": "JP",
          "axis_category": null,
          "group_type": "shared_name",
          "id": "jp:caramel",
          "identifiers": [],
          "is_group": true,
          "is_open": false,
          "name": "カラメル色素（共有名）",
          "translations": {},
          "use_category": [
            "着色料"
          ]
        }
      ],
      "token": "カラメル色素"
    }
  ]
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.additiveatlas.monon.space/v1/labels/analyze/diff' \
  -H 'content-type: application/json' \
  --data-raw '{"axis":"JP","lang":"ja","text":["\u30bd\u30eb\u30d3\u30f3\u9178\uff08\uff2b\uff09","\u30ab\u30e9\u30e1\u30eb\u8272\u7d20"]}'

# 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 - -X POST 'https://api.additiveatlas.monon.space/v1/labels/analyze/diff' \
  -H 'content-type: application/json' \
  --data-raw '{"axis":"JP","lang":"ja","text":["\u30bd\u30eb\u30d3\u30f3\u9178\uff08\uff2b\uff09","\u30ab\u30e9\u30e1\u30eb\u8272\u7d20"]}' \
  | 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 $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
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 $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.additiveatlas.monon.space%2Fv1%2Flabels%2Fanalyze%2Fdiff&method=POST
const res = await pay("https://api.additiveatlas.monon.space/v1/labels/analyze/diff", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "axis": "JP",
    "lang": "ja",
    "text": [
      "\u30bd\u30eb\u30d3\u30f3\u9178\uff08\uff2b\uff09",
      "\u30ab\u30e9\u30e1\u30eb\u8272\u7d20"
    ]
  }),
});
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 $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.additiveatlas.monon.space/v1/labels/analyze/diff",
        json={
            "axis": "JP",
            "lang": "ja",
            "text": [
                "\u30bd\u30eb\u30d3\u30f3\u9178\uff08\uff2b\uff09",
                "\u30ab\u30e9\u30e1\u30eb\u8272\u7d20",
            ],
        },
    )
    print(res.status_code, res.text)