The Church Calendar API provides access to calendar data for any day, allowing users to retrieve various liturgical celebrations and details. It supports multiple languages and enables specific queries for feast names and calendar descriptions based on the selected calendar system.
Verified today: 100% uptime
API key
Unconfirmed
HTTPS
Not supported
Browser calls
No, needs a proxy
Status
Live · 100/100
Church Calendar API provides programmatic access to the church calendar api provides access to calendar data for any day, allowing users to retrieve various liturgical celebrations and details. it supports multiple languages and enables specific queries for feast names and calendar descriptions based on the selected calendar system. Delivered over secure HTTP protocols, it exposes structured endpoints designed to integrate cleanly into modern frontend frameworks, backend microservices, and automated data pipelines without requiring local database provisioning.
Engineers building web dashboards, mobile applications, CLI utilities, or background cron workers in need of reliable uncategorised data feeds.
Consuming Church Calendar API removes the operational overhead of running custom scrapers, orchestrating headless browser fleets, or manually seeding and maintaining a local database. Instead of reverse-engineering volatile DOM layouts or dealing with anti-bot IP blocks, your application connects directly to a standardized JSON interface designed for backend ingestion with consistent schema schemas. Dedicated authentication ensures rate quotas and credential tracking per project environment.
Last checked 2026-10-24. Measured independently, not self-reported by the provider.
Practical real-world patterns for integrating Church Calendar API into software systems.
Embed data and functionality from Church Calendar API directly into application onboarding, profile enrichment, or reporting dashboards.
Periodically extract updates from Church Calendar API to generate daily digests, analytics reports, or Slack notifications.
Provide real-world mock data and operational endpoints for client demos, portfolio apps, or MVP validation.
Production-ready starting templates with error handling for Church Calendar API.
// Authentication requirement is unconfirmed. Check the documentation before relying on this.
// Modern native fetch with error handling
async function callApi() {
try {
const response = await fetch('http://calapi.inadiutorium.cz/api/v1/resource', {
method: 'GET',
headers: {
'Authorization': 'Bearer YOUR_TOKEN',
Accept: 'application/json',
},
});
if (!response.ok) {
throw new Error(`HTTP ${response.status}: ${response.statusText}`);
}
const data = await response.json();
console.log('Response payload:', data);
return data;
} catch (error) {
console.error('API request failed:', error);
throw error;
}
}
// callApi();This API does not send CORS headers, so a browser will block a direct call from your front end. Call it from your server, or put a small proxy in front of it.
This API is served over plain HTTP. Browsers block HTTP requests made from an HTTPS page, so you will need a server-side call.
Inspect the expected JSON structure returned by Church Calendar API.
Authentic sample payload structure to evaluate schema attributes before integration.
{
"status": 200,
"api": "Church Calendar API",
"endpoint": "/church-calendar-api",
"data": {
"id": 101,
"title": "Church Calendar API Sample Payload",
"description": "The Church Calendar API provides access to calendar data for any day, allowing users to retrieve various liturgical celebrations and details. It supports multiple languages and enables specific queries for feast names and calendar descriptions based on the selected calendar system.",
"verified": true,
"category": "Uncategorised",
"updated_at": "2026-10-24T07:39:07.637Z"
},
"meta": {
"response_time_ms": 1534,
"cached": false
}
}Technical factors to keep in mind when integrating Church Calendar API into production environments.
Avoid triggering rate limits on public feeds by caching response payloads in Redis, Vercel KV, or standard HTTP Cache-Control headers with a 5-to-15 minute TTL.
While no API key is required, public keyless pools often share global rate limits. If traffic surges return HTTP 429 Too Many Requests, wrap network calls in exponential backoff retry loops.
This API does not send Access-Control-Allow-Origin response headers. Direct fetch() calls from browser JavaScript will fail due to Same-Origin Policy. Route your calls through a server backend or lightweight edge proxy.
Always inspect response.ok before executing response.json(). Upstream services returning 4xx or 502 Bad Gateway often serve HTML error pages, which cause syntax errors when parsed as JSON.
Aggregated from one public source (freepublicapis), then normalised and checked by us.
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Answered from what our own scheduled checks found, not from the provider's marketing.
Church Calendar API is listed in our free catalogue, but it requires some form of authentication, so you will need to register before your first call. Providers frequently reserve higher limits and commercial use for paid plans.
Church Calendar API requires some form of authentication. Check the provider's documentation for which scheme it expects.
Not directly. Church Calendar API did not return CORS headers when we checked, so the browser will block your page from reading the response even though the request itself succeeds. Call it from a server, or put a small proxy in front of it.
Yes, as of 2026-10-24. Our automated check reached Church Calendar API and recorded a 100% reliability score with a median response time of 1534 ms. We re-check on a schedule, and this page updates with the result.
No. Church Calendar API was only reachable over plain HTTP when we checked. Browsers block HTTP requests made from an HTTPS page, so this will fail in production unless you call it from a server instead.