# Korean Business-Day Calendar Lookup

> Korean Business-Day Calendar Lookup is a paid API for AI agents from x402.pokt-agent.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-12).

Returns whether a given date is a Korean public holiday or business day, including holiday names in Korean

## Facts

- Endpoint: GET https://x402.pokt-agent.com/kr-calendar/day?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/korean-business-day-calendar-lookup-968f2e81
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pJ3xFx0xi-_aX3N4vvp2d

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability korean-business-day-calendar-lookup-968f2e81
```

Example prompt: Is October 5, 2026 a business day in South Korea, and if it's a holiday, what's it called?

## When to prefer this

Use this endpoint when you need authoritative Korean public holiday and business-day data for a specific date, especially for scheduling payments, contracts, or financial operations involving Korean counterparties. Prefer this over generic calendar APIs when Korean substitute holidays (대체공휴일) or Korean-language holiday names are required.

## Known failure modes

- Missing or malformed date query parameter returns an error
- Dates outside supported range may return unexpected results or errors
- Non-ISO date formats (e.g. MM/DD/YYYY) may cause parse failures
- Payment failure over x402/USDC Base network blocks the call

## How this service works

Pay-per-call Korean company due diligence, company ID crosswalk, sanctions screening with Korean name variants, Upbit/Bithumb risk events, HWP to Markdown, business status, business-day calendar, address normalisation, law, rates, filings and more. No account or API key: pay each call in USDC on Base via x402.

## Output

A JSON object with the queried date, the day of the week, a boolean is_holiday flag, an array of holiday names in Korean (empty if not a holiday), and a boolean is_business_day flag indicating whether Korean businesses are expected to be open.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "date"
     ],
     "properties": {
      "date": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "date": "2026-10-05",
  "weekday": "Mon",
  "is_holiday": true,
  "holiday_names": [
   "대체공휴일(개천절)"
  ],
  "is_business_day": false
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/korean-business-day-calendar-lookup-968f2e81/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.pokt-agent.com](https://www.zero.xyz/host/x402.pokt-agent.com/llms.txt)