One billing boundary
Plans, subjects, subscriptions, agreements, payments, and audit evidence stay project-scoped.
Billing infrastructure · Go + PostgreSQL
Entitlements cross the gate only once.
Tiergate is a project-scoped billing service for teams that need provider integrations, recurring access, and compliance evidence to agree—even when the network does not.
System / 001
A ledger-shaped architecture.
Provider-safe events
Signed T-Bank and Polar webhooks are recorded once, processed transactionally, and safe to replay.
Delivery you can prove
Every consumer event is persisted before delivery with a stable idempotency key and retry history.
Operating principles
Correctness before choreography.
- Replay
- Provider receipts make retries ordinary, not exceptional.
- Scope
- Tenant and project ownership travels through every query.
- Evidence
- Agreement hashes and audit events remain inspectable.
- Recovery
- Durable events survive consumer outages and deploys.