API Integrations · Foundations

API Contract Lab: OpenAPI to Runnable Service

Name: API Contract Lab: OpenAPI to Runnable Service
Price: 420000 KRW

Live online · 5 weeks · 18 live hours

You will iterate on OpenAPI specs, generate mocks, and align consumer-driven tests with supplier teams. Scenarios include customs data feeds and retail inventory hooks common in Korean SME operations. Mentors review pull requests on example repos so you leave with a repeatable review checklist—not just slides.

Tuition (informational)

₩420,000

No checkout here—request details via Contact. See Money-Back Policy.

Abstract network nodes representing API connections on a dark display

Minseo Choi

Former platform lead for a Busan logistics API hub; now runs mentor reviews for integration cohorts.

What you build and discuss

OpenAPI 3.1 authoring with lint rules tuned for partner handoffs
Contract tests in CI using example payloads from real industry cases
Mock server workflows that mirror staging latency profiles
Error taxonomy workshop: 4xx vs retryable 5xx decisions
Postman/Insomnia collections versioned like code
Security pass: scopes, rotated keys, and least-privilege headers
Handoff pack: reviewer checklist + sample ADR template

Outcomes we assess

01 Ship a versioned API contract with automated breaking-change detection
02 Produce a mock-backed demo your team can replay without live backends
03 Document escalation paths when vendor SLAs slip

Participant notes

“The OpenAPI diff lab finally made our vendor reviews predictable. I still paste the week-2 checklist before every release train.”
— Jiwon , Operations analyst · survey

“Clear pacing, though the customs payload module felt dense. Mentor comments on my schema PR were the highlight.”
— Eun · Regional 3PL partner

Logistics & candor

Includes a limitation-focused FAQ item per program requirements.

Comfort with JSON and HTTP verbs is enough. We do not teach language-specific frameworks; exercises stay in spec-first tooling.