Service detail
Last updated: May 2026
Custom apps and APIs
Build the app, dashboard, backend workflow, or API bridge that turns a product idea into software users can test.
Buyer Guide
How Custom apps and APIs usually starts
Custom apps and APIs starts by narrowing a broad request into the first business result worth proving. The smaller the first scope, the faster the team can expose real risks around data, APIs, user experience, AI behavior, security, and handover.
The first conversation covers the goal, users, current workflow, available data, existing systems, timeline, and internal decision process. From there, Urbano DX recommends whether the first step should be an audit, PoC, MVP sprint, or ongoing delivery track.
The output should not be a demo that disappears after the call. It should leave source, runbook notes, acceptance criteria, open risks, and a next-step recommendation that the buyer can use internally.
First decision
What must be proven before the buyer funds the next step.
Managed risks
Data, APIs, AI behavior, security, adoption, and handover.
After delivery
Internal explanation, next sprint, vendor comparison, or budget approval.
Good first scope: what should buyers know?
The best first sprint is narrow enough to finish, but useful enough that a real team will test it. Scope should include users, data, API boundaries, review steps, and acceptance criteria.
- One product owner
- One core workflow
- One success metric
- Weekly demo cadence
What Urbano DX builds?
Urbano DX focuses on working software: apps, web platforms, internal tools, APIs, LLM features, AI workflows, dashboards, and production handover.
- React/TypeScript web apps
- FastAPI or Node backends
- LLM and AI workflow integrations
- Cloud deployment and handover
Example work: Buy Houses Japan: what should buyers know?
Buy Houses Japan is a public web app example: natural-language real estate search, AI-generated filters, and map-based results in a focused product flow.
- Plain-language search input
- AI-generated filters
- Interactive map results
- A working product surface buyers can inspect
What myths slow down AI workflow builds?
Myth
If the demo works, the PoC is done.
Fact
A useful PoC also leaves acceptance criteria, logs, risks, handover notes, and a clear next decision.
Myth
AI workflows should be fully automated from day one.
Fact
Early sprints are usually safer with human review, evidence display, and an override path.
Myth
Low-code means there is no engineering design risk.
Fact
Business-critical workflows still need API contracts, permissions, audit logs, and failure behavior.
Buyer FAQs
How much does a DX PoC cost?
A focused paid PoC usually starts from the Quick DX PoC range. Final pricing depends on data access, integrations, security needs, deployment environment, and acceptance criteria.
How long does an AI automation sprint take?
Most focused PoCs fit into 2 weeks, MVP automation sprints into 4 weeks, and production-oriented integrations into about 6 weeks.
What data is required?
The fastest start includes sample files, API docs, screenshots, example tickets, user roles, current workflow notes, and one owner who can join weekly demos.
Can we start without API access?
Yes. The first sprint can use exports, sample datasets, mocked APIs, or manual upload flows, then move toward API integration once access is approved.
Do you support Japanese documentation?
Yes. Engagements can include bilingual summaries, demo notes, handover materials, and meeting support through the Japan Desk model.
Who owns the source code?
Source-code ownership, repository handover, licensing, and reusable components are defined in the SOW before the sprint begins.
What do we receive after 2 weeks?
For a narrow PoC, the usual output is a working prototype or API slice, demo notes, assumptions, risks, acceptance criteria, and a recommendation to harden, integrate, expand, or stop.
Who owns technical decisions?
Senior engineers stay close to scope, architecture, AI-use risk, technical tradeoffs, weekly demos, and handover quality instead of hiding decisions behind layers of project management.
What does an API sprint deliver?
A focused API sprint can include endpoint design, an OpenAPI-style contract, auth assumptions, sample requests and responses, integration tests, logging, and handover notes.
How do you measure whether the sprint worked?
Each sprint starts with one measurable proof point such as reduced manual steps, successful extraction rate, API handoff success, response time, reviewer acceptance, or pilot-user feedback.
Scope the first sprint
Bring the app, API, LLM feature, or AI workflow you want to test. We will turn it into a clear first-sprint scope.
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