Inday - Public Holiday API

io.github.gokhanibrikci/inday-holiday-api

Documentation

Inday — Public Holiday API MCP Server

Ask your AI assistant about public holidays in 30+ countries — right inside Claude, Cursor, VS Code, and any MCP-compatible client.

MCP Endpoint: https://inday.co/api/mcp
Transport: Streamable HTTP
Auth: X-API-KEY header

Getting Started

Step 1 — Get a free API key
Sign up at inday.co/signup. Free tier includes 1,000 requests/month, no credit card required.

Step 2 — Add to your AI client (see setup below)

Step 3 — Start asking questions
"Is next Monday a holiday in Turkey?" · "How many working days in Germany in Q2 2026?"

Setup

Claude Desktop

macOS — edit ~/Library/Application Support/Claude/claude_desktop_config.json
Windows — edit %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "inday": {
      "type": "streamable-http",
      "url": "https://inday.co/api/mcp",
      "headers": {
        "X-API-KEY": "your_api_key_here"
      }
    }
  }
}

Restart Claude Desktop after saving.

Cursor

Edit ~/.cursor/mcp.json (or Settings → MCP → Add Server):

{
  "mcpServers": {
    "inday": {
      "type": "streamable-http",
      "url": "https://inday.co/api/mcp",
      "headers": {
        "X-API-KEY": "your_api_key_here"
      }
    }
  }
}

VS Code (GitHub Copilot / Continue)

Edit .vscode/mcp.json in your workspace, or your user settings.json:

{
  "mcp": {
    "servers": {
      "inday": {
        "type": "streamable-http",
        "url": "https://inday.co/api/mcp",
        "headers": {
          "X-API-KEY": "your_api_key_here"
        }
      }
    }
  }
}

Smithery (1-click install)

Available Tools

Tool	What it does	Example prompt
`check_holiday`	Check if a specific date is a public holiday	"Is April 23rd a holiday in Turkey?"
`get_calendar`	Full year holiday calendar for a country	"Show me all holidays in Germany in 2026"
`list_countries`	List all 30+ supported countries	"What countries does Inday support?"
`next_holiday`	Find the next upcoming holiday	"When is the next holiday in the UAE?"
`count_working_days`	Count working days between two dates	"How many billable days in April in Turkey?"

Example Prompts

"Is next Monday a holiday in Turkey? If so, what holiday is it?"
"Plan a sprint for April — exclude all holidays in Germany and the UK."
"How many working days does my UAE team have in Ramadan 2026?"
"What's the next long weekend in the US?"
"Compare holidays in France and Germany this month — which team has more working days?"
"Schedule a client call for next week avoiding holidays in both Turkey and the US."

Supported Countries

🇹🇷 TR · 🇩🇪 DE · 🇺🇸 US · 🇬🇧 GB · 🇦🇪 AE · 🇸🇦 SA · 🇫🇷 FR · 🇯🇵 JP · 🇨🇦 CA · 🇦🇺 AU · 🇮🇳 IN · 🇧🇷 BR · 🇳🇱 NL · 🇪🇸 ES · 🇮🇹 IT · 🇵🇱 PL · 🇸🇪 SE · 🇳🇴 NO · 🇩🇰 DK · 🇫🇮 FI · 🇨🇭 CH · 🇦🇹 AT · 🇧🇪 BE · 🇵🇹 PT · 🇨🇿 CZ · 🇷🇴 RO · 🇺🇦 UA · 🇷🇺 RU · 🇮🇩 ID · 🇸🇬 SG · and more.

Full list via list_countries tool or inday.co

Pricing

Plan	Price	Requests/month	Rate limit
Free	$0	1,000	10 req/min
Starter	$2.9/mo	10,000	100 req/min
Professional	$9.9/mo	100,000	1,000 req/min
Enterprise	$19.9/mo	500,000	10,000 req/min

View plans & upgrade →