ThAD (The Author’s Doppelgänger) is a research and writing partner that already knows your voice and your entire body of work. It brings your archive - along with the lectionary, scripture, and online scholarship - into Claude and ChatGPT, working from writer and style profiles built from everything you’ve written.
“This makes me a better preacher.”
Rev. Doyt Conn, Rector, Epiphany Parish Seattle
What You Can Do with ThAD
Search & Discover
Find any document by theme, scripture, season, or character - and see patterns across your entire body of work.
Prepare for Sunday
Lectionary readings, your past sermons on those texts, and preaching ideas - all in one conversation.
Write & Edit in your Voice
Brainstorm, draft, polish, and adapt - all in your own voice. And as you write, pull straight from your archive: ask what you’ve already said on a theme or passage and weave it in.
Research & Analyze
External scholarship alongside your own work, plus tools to check focus, extract citations, and summarize.
How It Works
1. Send Us Your Archive
Gather your sermons, articles, pastoral letters, and other writings. We process every document, extract 25+ metadata fields, and build writer and style profiles unique to you.
2. Connect Your AI
Add ThAD to Claude or ChatGPT - whichever you already use. It connects to your archive, the lectionary, scripture, and online scholarship, giving you a research partner that already knows your voice and your body of work.
3. Create and Enhance
A full research and writing assistant grounded in your own work - whether you’re prepping Sunday’s sermon or writing a book. Search, draft, edit, and research in Claude or ChatGPT, and email new documents to ThAD as you go to have them indexed automatically.
ThAD works inside both Claude and ChatGPT - whichever you already use. You’ll need a paid plan on that platform (Claude from Anthropic or ChatGPT from OpenAI) - we handle everything else.
Why ThAD vs. DIY with ChatGPT or Claude?
| DIY with ChatGPT / Claude | ThAD | |
|---|---|---|
| Archive size | ChatGPT Projects: 20 files max. Claude Projects: a few hundred pages before it starts summarizing and losing detail. | Your entire body of work - hundreds or thousands of documents, fully indexed, with no limits on archive size |
| Availability | Files live in individual projects; you have to remember where you put things | Every document is available in every conversation, every time |
| Finding your work | Searches the text and hopes to find relevant chunks - can’t filter by date, season, scripture, or document type | Structured search across 25+ fields: theme, passage, character, liturgical season, occasion, series |
| Your voice | No writing style profile - starts fresh every time | Per-document-type writing profiles built from your entire archive |
| Sermon prep | You assemble readings, past sermons, and ideas manually across multiple tools | One command: lectionary + your past sermons on those texts + fresh ideas |
| New documents | Upload manually, reorganize your projects yourself | Email it in - auto-classified, auto-indexed, immediately searchable |
| Scripture & lectionary | Copy/paste from other sources | Built-in NRSV, KJV, and Revised Common Lectionary - in the same conversation |
| Domain awareness | General-purpose - no concept of liturgical calendar, sermon series, or document types | Purpose-built for clergy: seasons, occasions, series, 7 document types |
ChatGPT and Claude are impressive tools - but they weren’t designed to manage a career’s worth of documents. They top out at a handful of files, have no structured metadata, no writing style profiles, and no understanding of how clergy actually work. ThAD handles your entire archive - every sermon, article, pastoral letter, and class you’ve ever written - fully indexed, always available, and growing with you.
Your Documents, Your Data
Your archive belongs to you - always. We don’t use your documents to train AI models or share them with anyone. You can export your data anytime, and if you cancel, we delete everything. No questions, no holdbacks.
Now Accepting Beta Applicants
Whether you have 20 sermons or 700, ThAD can help you rediscover and build on your life’s work. We’re onboarding new users now - tell us about your archive and we’ll get you started.