Tools (5)

check_holiday
list_public_holidays
get_next_business_day
count_business_days
report_feedback

check_holiday

Check whether a given date is a public holiday in a country.

Args:
date: Date to check in ISO 8601 format (YYYY-MM-DD).
country_code: ISO 3166-1 alpha-2 country code (e.g. 'NO', 'US', 'DE').
region_code: Optional ISO 3166-2 region code (e.g. 'US-CA', 'DE-BY').

Returns:
Dictionary with is_holiday (bool) and holiday_names (list of matching names).

Parameter	Type	Required	Description
`date`	`string`	required	Date to check in ISO 8601 format (YYYY-MM-DD).
`country_code`	`string`	required	ISO 3166-1 alpha-2 country code (e.g. 'NO', 'US', 'DE').
`region_code`	`any`	optional	Optional ISO 3166-2 region code (e.g. 'US-CA', 'DE-BY').

JSON-RPC Request

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "id": 1,
  "params": {
    "name": "check_holiday",
    "arguments": {
      "date": "example",
      "country_code": "NO"
    }
  }
}

list_public_holidays

List all public holidays for a country in a given year.

Args:
country_code: ISO 3166-1 alpha-2 country code (e.g. 'NO', 'US', 'DE').
year: The year (e.g. 2026).

Returns:
Dictionary with count and holidays list. Each holiday has date, name,
local_name, global flag, counties, and types.

Parameter	Type	Required	Description
`country_code`	`string`	required	ISO 3166-1 alpha-2 country code (e.g. 'NO', 'US', 'DE').
`year`	`integer`	required	The year (e.g. 2026).

JSON-RPC Request

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "id": 1,
  "params": {
    "name": "list_public_holidays",
    "arguments": {
      "country_code": "NO",
      "year": 1
    }
  }
}

get_next_business_day

Find the next business day on or after a given date, skipping weekends and holidays.

Args:
date: Starting date in ISO 8601 format (YYYY-MM-DD).
country_code: ISO 3166-1 alpha-2 country code (e.g. 'NO', 'US', 'DE').

Returns:
Dictionary with next_business_day date and days_skipped count.

Parameter	Type	Required	Description
`date`	`string`	required	Starting date in ISO 8601 format (YYYY-MM-DD).
`country_code`	`string`	required	ISO 3166-1 alpha-2 country code (e.g. 'NO', 'US', 'DE').

JSON-RPC Request

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "id": 1,
  "params": {
    "name": "get_next_business_day",
    "arguments": {
      "date": "example",
      "country_code": "NO"
    }
  }
}

count_business_days

Count business days between two dates (inclusive of start, exclusive of end).

Args:
start_date: Start date in ISO 8601 format (YYYY-MM-DD).
end_date: End date in ISO 8601 format (YYYY-MM-DD). Not included in the count.
country_code: ISO 3166-1 alpha-2 country code (e.g. 'NO', 'US', 'DE').

Returns:
Dictionary with business_days count and calendar_days in the range.

Parameter	Type	Required	Description
`start_date`	`string`	required	Start date in ISO 8601 format (YYYY-MM-DD).
`end_date`	`string`	required	End date in ISO 8601 format (YYYY-MM-DD). Not included in the count.
`country_code`	`string`	required	ISO 3166-1 alpha-2 country code (e.g. 'NO', 'US', 'DE').

JSON-RPC Request

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "id": 1,
  "params": {
    "name": "count_business_days",
    "arguments": {
      "start_date": "example",
      "end_date": "example",
      "country_code": "NO"
    }
  }
}

report_feedback

Report a bug, feature request, or general feedback for this data source.

Use this when something doesn't work as expected, when you'd like
a new feature, or when you have suggestions for improvement.

Args:
feedback: Describe the issue or suggestion.
feedback_type: One of 'bug', 'feature_request', or 'general'.

Parameter	Type	Required	Description
`feedback`	`string`	required
`feedback_type`	`string`	optional	(default: "general")

JSON-RPC Request

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "id": 1,
  "params": {
    "name": "report_feedback",
    "arguments": {
      "feedback": "example"
    }
  }
}

Quick Start

Shell

curl -X POST "https://context.gnist.ai/mcp/nager-date/" \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -H "Gnist-API-Key: YOUR_API_KEY" \
  -d '{"jsonrpc": "2.0", "method": "tools/call", "id": 1, "params": {"name": "check_holiday", "arguments": {"date": "example", "country_code": "example"}}}'

Python

import httpx

resp = httpx.post(
    "https://context.gnist.ai/mcp/nager-date/",
    headers={"Gnist-API-Key": "YOUR_API_KEY", "Content-Type": "application/json"},
    json={
  "jsonrpc": "2.0",
  "method": "tools/call",
  "id": 1,
  "params": {
    "name": "check_holiday",
    "arguments": {
      "date": "example",
      "country_code": "example"
    }
  }
},
)
print(resp.json())