Divine Dialogue

An AI guide to six world traditions (Buddhism, Christianity, Hinduism, Islam, Judaism and secular philosophy). Talk with a guide, ask one question of all six traditions side by side, read any passage with an explanation, and get a daily blessing.

Every quotation is fetched from a published translation and linked to its source, so the guides never invent scripture:

Tradition	Texts	Source
Christianity	Bible: World English Bible; Reina-Valera 1909 in Spanish	getbible.net
Islam	Quran: Saheeh International; Julio Cortés in Spanish. Hadith: Bukhari, Muslim, Nawawi	fawazahmed0 quran-api and hadith-api
Judaism	Tanakh, Mishnah, Talmud	Sefaria
Hinduism	Bhagavad Gita: Shri Purohit Swami	vedicscriptures.github.io
Buddhism	Dhammapada and suttas: Bhikkhu Sujato (CC0)	SuttaCentral
Secular	Marcus Aurelius (George Long), Epictetus (T. W. Higginson)	Project Gutenberg, bundled

Work in progress: this is being rebuilt from a 2025 Replit prototype. Voice conversation, accounts and subscriptions are on the way.

Run it locally

pnpm install
cp .env.example .env.local   # then add your ANTHROPIC_API_KEY
pnpm dev

Without a key the app still loads and shows a friendly "not configured" message.

Voice needs an ElevenLabs key with Text to Speech and Speech to Text access (ELEVENLABS_API_KEY).

Free limits and spending safety

Every visitor gets an anonymous, signed cookie (SESSION_SECRET). Each paid action is logged with its estimated cost in a Supabase table, and the server checks it before calling Claude or ElevenLabs:

Free each day	Default
Typed questions	10
Voice replies	3
"Ask all six traditions"	2
Passage explanations	10

On top of that: 6 requests a minute per visitor, $0.40 a day per visitor, per-network caps that survive clearing cookies, and a $3 daily ceiling across everyone, after which AI features pause. All are adjustable by environment variable (see .env.example). If the usage database can't be reached, AI features are refused rather than left unguarded.

To set it up, create a free Supabase project, run supabase/migrations/20261027200000_usage.sql in its SQL Editor, and set SUPABASE_URL and SUPABASE_SECRET_KEY. Locally, without Supabase, limits are switched off (with a warning); in production they are required.

Divine Dialogue Plus (Stripe, test mode)

Plus is a €4.99/month subscription that raises the daily allowances (100 questions, 40 voice replies up to 200 a month, 20 comparisons, 50 passages). It runs entirely in Stripe test mode: the server refuses a live key unless ALLOW_LIVE_PAYMENTS=true is set on purpose.

• Checkout: signed-in visitors upgrade through Stripe Checkout; the price is found by its lookup key, so no price ID needs configuring.
• Webhooks: /api/stripe/webhook verifies Stripe's signature and copies the subscription's status into Supabase. Returning from Checkout also syncs, so Plus applies at once.
• Billing portal: members change their card, see invoices or cancel in Stripe's Customer Portal.

Setup, in a Stripe sandbox:

# 1. Put the sandbox's sk_test_ key in .env.local as STRIPE_SECRET_KEY
# 2. Create the Plus product, price and portal settings (safe to re-run)
pnpm stripe:setup
# 3. Run supabase/migrations/20261028100000_subscriptions.sql in the Supabase SQL Editor
# 4. Locally, forward webhooks (prints the whsec_ secret for STRIPE_WEBHOOK_SECRET)
stripe listen --forward-to localhost:3000/api/stripe/webhook

Test card: 4242 4242 4242 4242, any future date, any CVC.

Checks

pnpm typecheck && pnpm lint && pnpm build
pnpm check:sources   # fetches a passage from every source, including all daily-blessing passages

Stack

Next.js 16 (App Router) · React 19 · TypeScript · Tailwind CSS 4 · Anthropic SDK (Claude Sonnet 5.5 for answers, Claude Haiku 5.5 for the daily blessing)