api.hn-dbpro.com is the commercial edge of the network — it exposes curated network data to partners with keys, quotas and a self-service developer portal.
The challenge
Partners were requesting bespoke exports by email; there was no contract, no versioning and no way to meter or monetise access.
The HN Group solution
HN Group shipped a versioned REST surface with API keys, tiered rate limits, webhooks and an interactive playground, live on a dedicated domain in under two days.
Technical features
Versioned REST endpoints with OpenAPI schema
Self-service API keys and tiered rate limits
Signed outbound webhooks with retries
Interactive request playground
Latency, error-rate and quota dashboards
Edge caching for read-heavy routes
API specifications
GET /v1/resources — cursor-paginated collections
POST /v1/resources — idempotent creates via Idempotency-Key
POST /v1/webhooks — register HMAC-signed callbacks
GET /v1/limits — remaining quota for the current key
Auth via x-api-key header, 429 with Retry-After on limit
Technology stack
TanStack Start
Server Routes
Supabase
PostgreSQL
Zod
Custom Domain
Impact & results
99.98% availability, sub-120ms median response time and a new recurring revenue line from API tiers.
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