Northstar Answers API

Hosted RAG API with tenancy, eval hooks, and deterministic fallbacks.

API GatewayVector DBK8s

Highlights

Per-tenant vector isolation and rate limits
Citation objects with character spans
Deterministic fallback modes for regulated replies
OpenAPI + typed SDKs
Usage metering for cost chargeback

Overview

Northstar exposes a developer-first RAG endpoint: bring your docs, get grounded answers with citations, latency SLAs, and per-tenant keys. Eval hooks let you run golden sets in CI. When confidence is low, the API returns structured ‘unknown’ payloads so clients can branch deterministically.

At a glance

Snapshot signals we optimize for on this engagement—useful for stakeholders comparing fit and scope.

SLA: p95 latency tiers
Isolation: Per-tenant
Surface: HTTPS API

How we delivered

Phased cadence—discovery through hardening—so expectations stay aligned with risk and learning cycles.

Private beta
Design partners on shared infra.
Harden
Multi-region + metering.
GA
SLAs + enterprise SSO.

Why API

Product teams want RAG without becoming ML ops overnight—Northstar handles scaling and patching.

Safety

Optional classifier gates on input and output with tenant-specific policies.

Ops

Status page + synthetic probes per region—latency regressions page engineers.

Screenshots

Additional UI captured in desktop framing—same product, more surface area.

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Zentisys

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