Country info

Country facts by name or ISO code: official name, capital, region, currencies, languages, timezones, dialing code, TLD, and more. Send GET /api/country-info with no required fields (2 optional) and pay $0.001 per call over x402 or MPP, or call it free by solving a proof-of-work challenge. It returns a JSON object with query, found, matches and country.

Committed open dataset (world-countries, ODbL, plus the IANA timezone country map) - offline and deterministic. ?name=Japan or ?code=JP

Category: Live public data · Tags: country geography currency language timezone dialing-code iso-3166

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Parameters

Example request

curl -i "https://agent402.tools/api/country-info?name=Japan"

Without payment this returns HTTP 402 Payment Required with the exact price for country-info; any x402 v2 or MPP client pays it and retries.

Example response

{
  "query": "Japan",
  "found": true,
  "matches": 1,
  "country": {
    "name": "Japan",
    "officialName": "Japan",
    "code2": "JP",
    "code3": "JPN",
    "capital": "Tokyo",
    "region": "Asia",
    "subregion": "Eastern Asia",
    "currencies": [
      {
        "code": "JPY",
        "name": "Japanese yen",
        "symbol": "¥"
      }
    ],
    "languages": [
      "Japanese"
    ],
    "timezones": [
      "Asia/Tokyo"
    ],
    "callingCode": "+81",
    "tld": ".jp",
    "demonym": "Japanese",
    "flag": "🇯🇵",
    "latlng": [
      36,
      138
    ],
    "area": 377930,
    "landlocked": false,
    "borders": [],
    "unMember": true
  }
}

From an MCP client

catalog.call {
  "slug": "country-info",
  "params": {
    "name": "Japan"
  }
}

On the hosted connector at https://agent402.tools/mcp, catalog.call runs country-info free (rate-limited, no wallet). Local install: npx -y agent402-mcp.

Errors and behavior

• Every field is optional. An input the tool rejects returns an HTTP 4xx whose body carries error, tool, expected, required and example.
• A paid call that ends in any status of 400 or above is not charged over x402, MPP or a prepaid credits key: settlement is cancelled when the tool fails. The exception is a Tempo push credential, a transfer the buyer sent before the call: it settles before the tool runs, so if the tool then fails the payment is recorded as a refund owed to the paying wallet.
• Free tier: no outbound network call leaves the server for this tool, so proof-of-work (16 leading zero bits of sha256) pays for it.
• A POST with a JSON body to /api/country-info is served as this GET, with the body as the input.
• An Idempotency-Key header makes a retried paid call replay the first 200 instead of charging again (an answer larger than 1 MB is not replayed).

Paid call (JavaScript agent)

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

const client = new x402Client();
client.setSpendControls?.(false); // keep your own spending ceiling in code
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/country-info?name=Japan");

No wallet? Pay with compute

Fetch a challenge, solve the sha256 puzzle (16 leading zero bits, a fraction of a second of CPU), and resend with the X-Pow-Solution header:

import { createHash } from "node:crypto";
const lz = (b) => { let t = 0; for (const x of b) { if (!x) { t += 8; continue; } t += Math.clz32(x) - 24; break; } return t; };
const c = await (await fetch("https://agent402.tools/api/pow/challenge?slug=country-info")).json();
let n = 0;
while (lz(createHash("sha256").update(c.challenge + ":" + n).digest()) < c.difficulty) n++;
await fetch("https://agent402.tools/api/country-info?name=Japan", { method: "GET", headers: { "X-Pow-Solution": c.token + ":" + n } });

Part of these workflows

Country info is one step in this skill pack, each sold as a single call:

• Locale brief - "Can I reach this counterparty this week?" - country facts, this year's public holidays, working days remaining this week, and what time it is there right now, in one call.

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