Guide
Accurate Catholic prayers and feast days in ChatGPT and Claude
General AI models misquote prayers and guess Mass times. Connect Gianna to ChatGPT, Claude, Codex, or Cursor to get exact texts and checked dates.
Updated 2026-10-17 · View resource
Ask a general AI model for the Memorare or today's feast and you will often get a close version with a wrong line, or the wrong date for a moveable feast. Ask it for Mass times and it may give an invented schedule.
Gianna gives these assistants a set of tools that look the answer up instead.
What your assistant can do with Gianna connected
- Look up any day's feast, season, colour, and readings in the Ordinary Form, the 1962 calendar, or the Dominican calendar.
- Quote Scripture and common prayers word for word, from public-domain sources.
- Find a novena, start it, and mark each day prayed.
- Find a church and its Mass and Confession times, with the source and the date each was checked.
- Add tasks, set reminders, and keep prayer intentions in your Gianna household. Gianna then delivers them on the web, by email, or on Telegram.
Connect it
No key is needed. You sign in to Gianna and approve the connection.
- Claude (web and desktop): Settings, Connectors, Add custom connector,
then enter
https://gianna.chat/mcp. - ChatGPT: turn on Developer mode in Settings, Security and login,
open Plugins, choose +, and enter
https://gianna.chat/mcp. - Codex: run
codex mcp add gianna --url https://gianna.chat/mcp, thencodex mcp login gianna.
Cursor, VS Code, Gemini CLI, and other MCP clients can connect with an API key. See Gianna for AI agents for each one.
What it costs
The Catholic reference tools (liturgy, Scripture, prayers, Church teaching, churches, and saints) are free with a Gianna account. Setting reminders and keeping tasks in a household needs a plan; see the prices below.
Then ask normally
"Give me the exact text of the Memorare."
"What feast is it on Sunday in the 1962 calendar?"
"Start the Divine Mercy novena and remind me each day at 3pm."
The assistant calls Gianna's tools and quotes what they return, with the source.
Price and the early-bird offer
The early-bird offer gives half price for your first year. Standard is $5 a month or $40 a year, normally $10 or $80. Pro, with voice notes and photo reading, is $10 a month or $80 a year, normally $20 or $160. One subscription covers the household, the first seven days are free, and nothing is charged during the trial. Prices checked on 17 October 2026; see gianna.chat for current terms, or start the free trial.