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Catholic Reminders + ChatGPT: ask what this week means in the Church calendar

Catholic Reminders keeps the liturgical calendar: feasts, fasting and abstinence days, holy days and Mass reading citations. ChatGPT can turn that into a plain answer to the question, what does this week mean? Here is what works today and what to check first.

AgentStructure.AI4 min read

Works with

  • Muse.ai
  • Instinct
  • Grok
  • Claude
  • ChatGPT
  • Any MCP-capable assistant
Connect Catholic Reminders to ChatGPT as a custom connector, then ask what this week means in the Church calendar and get the feasts, fasting days and Sunday readings.
Example alert. Names and numbers are illustrative.

Key takeaways

The short version.

  • Catholic Reminders has a week view with feasts, holy days, and fast and abstinence days, plus a Sunday Mass companion with reading citations and USCCB links.
  • ChatGPT can reach it only as a custom connector you add yourself, using the app's MCP address and a personal token. Availability depends on your ChatGPT plan, so check your own account.
  • The app supplies citations and links to the readings, not the full reading text. ChatGPT explains and organizes what the app returns.
  • Nothing here is an official listing, partnership or built-in integration with ChatGPT.
  • The calendar is the U.S. Roman calendar. For your parish or diocese, follow local announcements.

Who it is for

Who is this pairing for?

  • It is for Catholics who like to plan the week ahead: parents getting children ready for Sunday, catechists and teachers, parish…

  • Catholic Reminders delivers the liturgical calendar, feast days, saints, readings, prayers and context for what is happening in the Church.

  • The app knows the calendar.

It is for Catholics who like to plan the week ahead: parents getting children ready for Sunday, catechists and teachers, parish volunteers, RCIA candidates and anyone who wants to know when a fast or a feast is coming without opening a calendar.

Catholic Reminders delivers the liturgical calendar, feast days, saints, readings, prayers and context for what is happening in the Church. ChatGPT is OpenAI's AI assistant, and it is good at answering a plain question in plain words.

The app knows the calendar. ChatGPT lets you ask about it in your own words and shape the answer to your week.

Use cases

4 ways people use Catholic Reminders + ChatGPT.

  1. Week ahead

    1. Ask what this week means in the Church calendar

    Catholic Reminders has a week view that covers the upcoming Sunday and the next seven days, with important days flagged: holy days, feasts, and fast and abstinence days. Ask ChatGPT, through the connector, what this week means in the Church calendar and it can list them in order.

    Ask for a short list, one line per day, so the answer is easy to scan.

  2. Sunday readings

    2. Get ready for Sunday

    The app's Mass companion returns the reading citations and USCCB links for a date, and the coming Sunday is the default. It gives citations and links, not the text of the readings or commentary.

    Ask ChatGPT to list the citations, then open the links to read the passages themselves. Then ask it for a two-sentence reminder of what to look for, as long as you keep it to what the readings say.

  3. Fasting days

    3. Plan around fasting and abstinence days

    The app flags fast and abstinence days and Mass obligations. Ask ChatGPT to check the next 30 days for them and put them in a short list you can paste into your own calendar.

    If a date matters for your household, check it against your parish bulletin or diocese, since local practice can differ.

  4. Faith questions

    4. Ask a faith question and get a sourced answer

    Catholic Reminders can answer faith questions from its reviewed knowledge base. When a question is not covered, it says it is unsure and does not generate doctrine.

    Ask ChatGPT to pass along that answer faithfully and to say so when the app is unsure. For anything serious, talk with your priest.

On your phone

What the alerts look like.

Illustrative

Figure 1

An example exchange. The dates and details are made up.

Example alerts. Every name, number and event shown is illustrative.

How to

How do I connect Catholic Reminders to ChatGPT?

  1. Step 1

    Sign up free at [catholicreminders.org](https://catholicreminders.org), open the Connect your AI page and create a personal token. Save it, because it is secret. The MCP address is https://catholicreminders.org/api/mcp.

  2. Step 2

    In ChatGPT, open the settings for apps or connectors and look for the option to add a custom connector or MCP server. Enter a name and the address. The menu names and the plans that offer this change, so follow OpenAI's current help pages.

  3. Step 3

    The app accepts the token as a bearer authorization or an X-API-Key header, so choose the option that matches what your ChatGPT screen offers. If it offers only a sign-in flow, the connector may not work.

  4. Step 4

    Start a chat, enable the connector for it and ask what this week means in the Church calendar. Review any tool requests before you approve them.

Custom MCP connectors and developer mode are described on OpenAI's help center and developer site. They are offered on some plans and not others, and workspace administrators may control them, so check your own account. Catholic Reminders is not listed by OpenAI or built into ChatGPT.

Open Catholic Reminders + ChatGPTConnect your AI

FAQ

Frequently asked questions.

Is Catholic Reminders an official ChatGPT integration?

No. There is no partnership, listing or built-in integration. ChatGPT supports custom connectors on some plans, and you add the app's address yourself.

Will ChatGPT give me the full text of the readings?

No. The app returns reading citations with USCCB links. Open the links to read the passages.

Is the calendar right for my diocese?

The app uses the U.S. Roman calendar. Local rules and celebrations can differ, so follow your parish or diocese when they do. The site is independent and is not endorsed by the Vatican, the USCCB or the Catholic Church.

What does it cost?

The apps are free during the beta. Check the site for the current status of each feature.

My ChatGPT plan has no custom connectors. What now?

You can still use Catholic Reminders on its own: briefings by email, in the app or by push notification, and the site shows today's feast and readings.

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