specification: API Commons Plans
specificationVersion: '0.1'
schema: https://raw.githubusercontent.com/api-evangelist/interface-research/main/schema/api-commons.yml#/$defs/Plans
provider: Checkiday
providerId: checkiday-national-holiday-api
created: '2026-05-30'
modified: '2026-05-30'
tags:
  - Calendar
  - Holidays
  - Events
  - Observances
  - Public APIs
description: |
  Machine-readable plans and pricing for the Checkiday Holiday and Event API,
  routed through the apilayer marketplace. Pricing and quotas reflect the
  published tier ladder on apilayer.com/marketplace/checkiday-api.
plans:
  - id: checkiday-free
    name: Free
    type: freemium
    description: |
      Free entry tier with 100 monthly requests, no credit card required.
      Suitable for evaluation, hobby projects, and proof-of-concept work.
    entries:
      - label: API Requests
        description: Monthly request quota across all Checkiday endpoints.
        name: api_requests
        type: quota
        metric: requests
        limit: 100
        timeFrame: month
        geo: global
        domains: []
        unit: 1
        price: '0.00'
        userMultiplied: false
    elements:
      - name: Public Documentation
      - name: All Endpoints (/events, /event, /search)
      - name: Official Client SDKs (8 languages)
      - name: Community Support
  - id: checkiday-basic
    name: Basic
    type: paid
    description: |
      Entry paid tier with 5,000 monthly requests at $9.99/month, suitable
      for small applications and indie publishers.
    entries:
      - label: API Requests
        description: Monthly request quota across all Checkiday endpoints.
        name: api_requests
        type: quota
        metric: requests
        limit: 5000
        timeFrame: month
        geo: global
        domains: []
        unit: 1
        price: '9.99'
        userMultiplied: false
    elements:
      - name: All Endpoints
      - name: Official Client SDKs
      - name: Email Support
  - id: checkiday-pro
    name: Pro
    type: paid
    description: |
      Production tier with 50,000 monthly requests at $49.99/month for
      media, marketing, and SaaS workloads.
    entries:
      - label: API Requests
        description: Monthly request quota across all Checkiday endpoints.
        name: api_requests
        type: quota
        metric: requests
        limit: 50000
        timeFrame: month
        geo: global
        domains: []
        unit: 1
        price: '49.99'
        userMultiplied: false
    elements:
      - name: All Endpoints
      - name: Official Client SDKs
      - name: Priority Email Support
  - id: checkiday-enterprise
    name: Enterprise
    type: paid
    description: |
      Enterprise tier with 250,000 monthly requests at $99.99/month for
      high-volume publishers, networks, and platforms.
    entries:
      - label: API Requests
        description: Monthly request quota across all Checkiday endpoints.
        name: api_requests
        type: quota
        metric: requests
        limit: 250000
        timeFrame: month
        geo: global
        domains: []
        unit: 1
        price: '99.99'
        userMultiplied: false
    elements:
      - name: All Endpoints
      - name: Official Client SDKs
      - name: Priority Support
      - name: Enterprise SLA (via apilayer)
  - id: checkiday-custom
    name: Custom
    type: enterprise
    description: |
      Volume-based custom pricing for monthly quotas above 250,000 requests
      and for organizations with bespoke SLA, billing, or routing needs.
      Contact apilayer sales for terms.
    entries:
      - label: API Requests
        description: Negotiated monthly request quota.
        name: api_requests
        type: quota
        metric: requests
        limit: TBD
        timeFrame: month
        geo: global
        domains: []
        unit: 1
        price: TBD
        userMultiplied: false
    elements:
      - name: All Endpoints
      - name: Custom SLA
      - name: Dedicated Account Management