Productivity · Developer Tools
Calendar File
Check
Check an .ics calendar feed before you share it
Calendar File Check runs the same live engine here and in your assistant
Live playground
Use Calendar File Check now
Point either tool at a public .ics feed URL and get the same RFC 5545 conformance verdict a connected assistant gets — real parsing, bounded recurrence expansion, and VTIMEZONE/DST evidence.
Your usage
—
Free forever — create a free account for a bigger monthly allowance that follows you across every app and every assistant.Pooled across every app and surface. Manage usage
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Marketplaces
Open Calendar File Check where you already work — every listing runs the same live engine as this page.
- Marketplace listings are on the way. Meanwhile, point any MCP-compatible assistant straight at the live endpoint:
https://powmcp.com/ics-calendar-check/mcp
Proof
Real apps.Real engines.Real results.
- Application
- Calendar File Check
- Category
- Productivity
- Platform
- Web
Engine Anatomy
Proof
Calendar File Check
What it does
Check an .ics calendar feed before you share it
Preflight a public iCalendar (.ics) feed from chat with real RFC 5545 parser conformance, required-property and line-folding checks, recurrence expansion over a bounded window, and VTIMEZONE/DST evidence, or align two feeds and flag structural, occurrence, and timing drift under identical limits, validating document conformance only.
Tools in this application
Ics Check
ics_check
ics_check
Ics Compare
ics_compare
ics_compare
0USD
Free to use with fair-use rate limits.
Calendar File Check questions
Scope and boundaries for Calendar File Check.
01What does Calendar File Check actually check?
Preflight a public iCalendar (.ics) feed from chat with real RFC 5545 parser conformance, required-property and line-folding checks, recurrence expansion over a bounded window, and VTIMEZONE/DST evidence, or align two feeds and flag structural, occurrence, and timing drift under identical limits, validating document conformance only.
02What does it never do?
It reports what its pinned engine measured and nothing more — it does not judge quality, correctness of your underlying business decisions, or anything outside its stated scope, and it never fabricates a result.
03What does it cost?
Nothing. Every published app is free to use with fair-use rate limits.
04Can my assistant connect directly?
Yes — any MCP-compatible assistant can connect straight to the canonical endpoint: https://powmcp.com/ics-calendar-check/mcp. Marketplace listings are conveniences over the same live engine.