ConneX — Public API Platform & Integration Hub
A fully documented REST API platform with authentication, rate limiting, webhook delivery and a developer portal — built so partners could integrate in hours, not weeks.
- Timeline
- 5 weeks
- Role
- API design & full-stack development
- Team
- Lead engineer
- Year
- 2025

12
Partners integrated
< 50ms
Median latency
99.9%
Uptime
OpenAPI
Full docs
Client goals
- ◎Give third-party partners a stable, documented API
- ◎Rate limit and authenticate per API key
- ◎Deliver webhooks reliably with retries
Project overview
ConneX needed to open its platform to third-party partners. A public API with poor docs, no rate limiting and unreliable webhooks would create a support nightmare — so we built it properly from the start.
The client problem
Our solution
A versioned REST API with API key authentication, per-key rate limiting, OpenAPI documentation and a webhook delivery system with exponential backoff retries and a dead-letter queue.
What we built
Features
API key auth
Per-client keys with scopes and revocation.
Rate limiting
Per-key limits with Redis sliding window.
OpenAPI docs
Auto-generated, interactive documentation.
Webhooks
Reliable delivery with retries and logs.
Usage dashboard
Per-key request counts and error rates.
Versioning
v1/v2 routing with deprecation headers.
Security
HMAC signatures, TLS, input validation.
Under the hood
Technical code
import { auth } from "@/lib/auth"; export async function requireMember(orgId: string) { const session = await auth(); if (!session) throw new Response("Unauthorized", { status: 401 }); const member = await db.membership.findUnique({ where: { userId_orgId: { userId: session.user.id, orgId } }, }); if (!member) throw new Response("Forbidden", { status: 403 }); return { user: session.user, role: member.role };}import { db } from "@/lib/db"; export async function GET() { const items = await db.project.findMany({ where: { status: "active" }, select: { id: true, name: true, updatedAt: true }, orderBy: { updatedAt: "desc" }, take: 50, }); return Response.json(items);}Integrations
APIs & services
Redis
Rate limiting and webhook queue.
OpenAPI / Swagger
Auto-generated interactive API docs.
Resend
Webhook failure and key expiry alerts.
Process
Development workflow
- 1
Discovery
Goals, users and success metrics defined on a free call.
- 2
Planning
Fixed scope, milestone plan and timeline in writing.
- 3
UI/UX design
Wireframes and a clean, modern design system.
- 4
Backend setup
Database schema, auth and core services.
- 5
API development
Typed, documented endpoints and integrations.
- 6
Frontend
Responsive, accessible UI wired to the API.
- 7
Testing
QA across devices plus performance & security checks.
- 8
Deployment
CI/CD, monitoring and a smooth production launch.
- 9
Support
Ongoing maintenance, updates and new features.
Speed & SEO
Performance & SEO
Performance
- ✓Server-side & static rendering for instant first paint
- ✓Image optimisation and lazy loading
- ✓Code-splitting and route-level prefetching
- ✓Edge/CDN caching with smart revalidation
- ✓Green Core Web Vitals (LCP, CLS, INP)
- ✓Database indexing and query tuning
SEO
- ✓Per-page metadata, canonical URLs and Open Graph
- ✓Structured data (JSON-LD) for rich results
- ✓Programmatic sitemap & robots
- ✓Semantic, accessible HTML
- ✓Clean, descriptive slug URLs
Built secure
Security
Outcome
Results & impact
12
Partners integrated
< 50ms
Median latency
99.9%
Uptime
OpenAPI
Full docs
ConneX onboarded 12 partners in the first month with a fully documented API, < 50ms median latency and 99.9% uptime — support tickets from integrations dropped to near zero.
Build your API platform
Documented, rate-limited APIs and webhook systems that partners can integrate in hours.


