Usage-based billing that runs entirely inside your infrastructure. One binary. One database. No external dependencies. Built for teams with data residency, compliance, and air-gapped requirements.
docker compose up -d
Your customers require data residency. Your compliance team demands on-premise. Your security auditors won't sign off on sending billing events to a third-party cloud.
But building billing in-house is an 18-month project with edge cases that will haunt your engineering team for years.
One Docker command. One PostgreSQL database. Zero cloud dependencies. Full billing infrastructure that lives exactly where your compliance team needs it.
Every billing platform needs ingestion, aggregation, and pricing. ABAXUS ships all three as a single deployable binary backed by PostgreSQL.
Receive, deduplicate, and durably store usage events. Mandatory idempotency keys. 202 Accepted, never 200 OK.
Two query modes with explicit consistency levels. Real-time dashboards from materialized views. Exact billing from raw event scans.
Pricing models are data, not code. Immutable plan versioning. Subscription overrides for enterprise contracts.
From defining what to measure to charging a card — every step is an API call, every step is idempotent.
{
"customer_id": "cust_acme",
"metric_key": "api_calls",
"value": 1,
"timestamp": "2026-03-17T14:00:00Z",
"idempotency_key": "evt_acme_req_abc123" // mandatory
}Duplicate events, API calls, and calculations are all safe. Replay any request without side effects.
Every invoice line item traces back to raw events through stored computations and SHA-256 checksums.
Metrics, plans, calculations, events — all immutable historical record. Soft-delete only preserves audit integrity.
DECIMAL(20,10) in PostgreSQL, decimal library in code. Floating point in billing is a lawsuit waiting to happen.
Real-time queries always declare eventual. Billing computations always declare exact.
Structured JSON logs, Prometheus metrics, health endpoints. Required for on-premise where you have no direct access.
Every dependency was chosen to maximize deployability. If it doesn't help you run in an air-gapped environment, it's not in the binary.
Annual license + usage-based overage. Priced for teams that understand cheap billing tools cost more in the long run.
For early-stage SaaS launching usage-based billing.
For scaling companies with compliance requirements.
Managed deployment, dedicated support, custom SLAs.
Design partner program: 60–70% discount for first 5 customers in exchange for weekly calls and case study permission.
One binary. One database. Full audit trail. Your compliance team will thank you.
curl -sSL https://get.abaxus.io | sh