caldays

caldays.com

Provides a JSON REST API for public holidays, long weekends, and time-zone data for countries worldwide.

The caldays API uses none authentication; has freemium pricing; offers a free tier (10,000 requests/IP/day, no API key required); rate limits: 10,000 requests per IP per day (free); higher tiers 100k–1M/day, Pro has no per-IP rate-limit. Verified 2026-07-08 with per-field source links.

Productivity Verified 2026-07-08 high confidence

Base URL

https://api.caldays.com/v1/

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Auth

none

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Free tier

10,000 requests/IP/day, no API key required

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Pricing model

freemium

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Pricing

Free $0 (10k req/day); Starter $9/mo (100k/day); Pro $29/mo (1M/day); Enterprise custom (unlimited). Annual saves 20%.

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Rate limits

10,000 requests per IP per day (free); higher tiers 100k–1M/day, Pro has no per-IP rate-limit

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OpenAPI spec

not documented null

no source

MCP server

https://mcp.caldays.com/mcp

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