# ECXI Gateway — Cipherbit Enterprise
> ECXI service & inventory catalog, priced in USD (1 ECXI = 1 USD); PayPal checkout in USD/CHF. Quoting is public; money writes are gated. Null-price SKUs are quote-only.

## Catalog
- [Catalog (JSON)](api/catalog): 12 SKUs, categories: infrastructure, consumable, cybersecurity.
- [Tiers (JSON)](api/tiers): access tiers by ECXI held/staked and staking multipliers.
- [PayPal rail status](api/autoconfig): settlement rail configuration (no secrets).

## API
- POST api/quotes — create a quote (public). Body: { sku_id, qty?, note?, currency? (USD|CHF) }.
- POST api/quotes/:id/merchant-price — merchant sets server-side price (x-merchant-key).
- POST api/quotes/:id/approve — payer approves (x-payer-token).
- POST api/orders, POST api/orders/:id/capture — PayPal settlement (x-payer-token).

## Scheduling (billable time with employees; 15-minute blocks; briefing free)
- [Rate card (JSON)](api/scheduler): vector array of SKU · Title · Rate · MSA. Google Workspace calendar admin@energycapital.io; Calendly failover https://calendly.com/webbtel.
- [Availability (JSON)](api/scheduler/availability): provisional 15-minute blocks (UTC business hours).
- [Infrastructure MSA (template)](msa/infra): governing terms for consulting/training bookings.
- POST api/scheduler/bookings — book a block. Body: { sku, start (ISO, 15-min aligned), minutes? }. Free SKU SCH-BREF-15 (briefing) only.