API contract design
Resource models, error envelopes, pagination, and versioning policy drafted to match how your consumers actually call you — not how a slide deck imagines they will.
NextGen Relay Software Consulting
API design and integration consulting from Phloen Chit — scoped engagements for teams that need clear contracts, stable payloads, and integration paths that survive production traffic.
Probe log · Bangkok
Lumphini head office · Engagements by project scope or advisory session · Commercial terms confirmed per statement of work
Built for Bangkok teams shipping across borders
Your gateways, partner APIs, and internal services rarely fail in isolation — they fail where payloads disagree, auth flows drift, and retry semantics were never written down. We work from 46/8, Phloen Chit Road, Lumphini with product and platform leads who need integration work that auditors and on-call engineers can read without guesswork.
Locality-led does not mean generic outsourcing: sessions stay anchored to your repositories, your staging environments, and the regulatory context your Thai and regional users expect. When a vendor changes a field type on a Friday, you want a contract diff, not a firefight.
Engagements are scoped before build weeks begin — discovery, design review, implementation pairing, or post-launch hardening — so advisory time maps to deliverables you can hand to compliance and SRE.
Typical focus: OpenAPI alignment, webhook reliability, idempotency keys, partner onboarding playbooks, and breaking-change governance for mobile and ERP consumers.
Engagement modules
Choose a module or combine them inside a single statement of work. Fees are quoted after scope confirmation — nothing on this site is a live checkout.
Integration implementation
Hands-on pairing on connectors, message transforms, and test harnesses against partner sandboxes. We document failure modes and backoff before merge requests land on main.
Advisory sessions
Fixed-length reviews of architecture decisions, auth schemes, or migration cutovers. You leave with a written decision log suitable for internal sign-off.
“A reconnaissance pass over your integrations should return signal — schema drift, auth gaps, and retry storms — before your customers report them.”
Implementation work stays tied to observable contracts — the same discipline whether you publish REST, GraphQL facades, or event streams to partners.
Questions from platform leads
Do you take fixed-bid API rewrites?
We quote after a short discovery call and repository skim. Fixed bids are possible when boundaries and acceptance tests are explicit; otherwise we use capped timeboxes with weekly checkpoints.
Can you work with our existing Thai payment or logistics partners?
Yes — engagements often include mapping local partner specs to your internal models, with bilingual field notes where product teams need them.
Is on-site work available at Phloen Chit?
Advisory sessions can be held at our Lumphini office or remotely. Implementation pairing is usually remote with scheduled on-site workshops when helpful.