This release adds Zaprite as an alternative to BTCPay. Operators
can now choose between two payment rails:
- BTCPay: Bitcoin-only, you run the BTCPay Server yourself
- Zaprite: Bitcoin + fiat cards (USD/EUR via Stripe/Square), brokered
by Zaprite, settles to your connected wallets
Only one is active at a time per Keysat instance. Switching requires
Disconnect → Connect; existing license keys are unaffected. Future
v0.3 work routes per-policy choice (e.g., "free tier via Zaprite,
paid tier via BTCPay") if operators want both, but for v0.2.0:2 it's
either-or.
What's in this release:
**Migration 0011 — recurring subscriptions schema (dormant).**
Adds `subscriptions` and `subscription_invoices` tables, plus
`is_recurring`/`renewal_period_days`/`grace_period_days` (default 7)/
`trial_days` (default 0) on policies. No daemon code uses these
yet — phases 2-6 of RECURRING_SUBSCRIPTIONS_DESIGN.md land in
follow-up commits. Migration regression test covers the additive
contract against populated data.
**Migration 0012 — zaprite_config.** Singleton-row table for the
operator's Zaprite API key + base URL + recorded webhook id.
Mirrors btcpay_config from migration 0002.
**ZapriteProvider implementation.** New module at
src/payment/zaprite/ with client.rs (HTTP, Bearer auth), config.rs
(DB persistence), provider.rs (PaymentProvider trait impl). Maps
Zaprite's currency enum (BTC/USD/EUR) to/from the Money type;
maps Zaprite's order status enum (PENDING/PROCESSING/PAID/COMPLETE/
OVERPAID/UNDERPAID) to ProviderInvoiceStatus.
**Webhook security via externalUniqId round-trip.** Zaprite does
NOT publish a webhook signature scheme (verified May 2026 against
public OpenAPI + dashboard). Their docs explicitly designate
receiver-side idempotency as the security model. Keysat's defense:
attach our local invoice UUID as externalUniqId at order creation,
then trust the webhook only insofar as the order id resolves to
a local invoice in an expected state. Documented in detail in the
payment::zaprite module-level comment + the validate_webhook
docstring.
**Admin endpoints.**
- POST /v1/admin/zaprite/connect: validates the API key by pinging
GET /v1/orders before persisting; swaps active provider atomically
- POST /v1/admin/zaprite/disconnect: clears stored creds + provider
- GET /v1/admin/zaprite/status: read-only connection snapshot
- POST /v1/zaprite/webhook: webhook landing route (alias of the
existing /v1/btcpay/webhook handler since validate_webhook is
trait-level)
**StartOS Actions** under a new "Zaprite" group: Connect Zaprite,
Check Zaprite connection, Disconnect Zaprite. Operator pastes the
API key into a masked input; daemon validates + saves.
**Tests.** Two new in tests/api.rs (zaprite_webhook_event_parsing
covers the full event-type mapping + missing-id rejection +
malformed-JSON rejection; zaprite_provider_kind pins the
identification). Migration regression test for 0011. Test count
grows 39 → 41.
Operators on BTCPay see no change. Operators wanting Zaprite go
through the StartOS Actions tab → Connect Zaprite, paste their
API key, register a webhook in Zaprite's dashboard pointing at
their public Keysat URL + /v1/zaprite/webhook.
Recurring subscriptions are NOT yet operator-visible — schema only
in this release. Daemon-code that uses the subscriptions tables
(renewal worker, validate-hot-path subscription branch, admin UI)
lands in subsequent commits per the design doc's phased plan.
Closes the last T1 BTCPay UX gap from V0.2_PLAN. Connect now checks
/v1/admin/btcpay/status first; if a connection exists, returns a
clear "already connected" guidance message pointing the operator at
Disconnect → Connect for re-authorize cases. Without this guard,
re-clicking Connect spawned a new webhook subscription on BTCPay's
side every time, leaving orphan webhooks BTCPay would keep trying
to deliver to.
The Go SDK has been written and verified — all 4 crosscheck tests
pass against the shared tests/crosscheck/vector.json (the same file
the Rust/TS/Python SDKs and the daemon test against). Pure stdlib,
zero third-party dependencies. Hosted in its own repo at
github.com/keysat-xyz/keysat-client-go (private during alpha).
This release IS the 5th-language milestone: daemon + Rust + TS +
Python + Go all agree byte-for-byte on the LIC1 wire format.
Daemon binary unchanged — wrapper-only revision.
Grant