Custom software, built like infrastructure.
Not a WordPress shop.
Production-grade platforms built on Next.js, Supabase, and Vercel. The systems where the agents live, where the supervisors work, and where the audit trail lands. Same operator advises and ships.
Six kinds of platform.
One way of building them.
These are the systems we ship over and over. Different surfaces, same spine: Next.js on the front, Supabase underneath, Vercel in front, audit trails and kill switches wired in before launch.
Internal operations platforms
The console your operators actually live in.
The system of record your team works inside all day. Queues, exceptions, approvals, audit trails, role-based access, the works. Built so an operator can do their job without three tabs of vendor dashboards open behind them.
Agent supervision UIs
Where the humans watch the agents work.
The screen a supervisor uses to inspect what an agent is doing, override a decision, approve a sensitive action, and pull the kill switch when something looks wrong. The missing layer between an agent in production and a team that can actually own it.
Customer-facing apps
Production web apps with a real spine.
Marketing sites that load instantly, signed-in product experiences with real auth and real data, and the boring-but-load-bearing things like email flows, billing webhooks, and CSV exports. The things your customers see, and the things the business runs on.
Integration backends
The wiring that makes the rest of the stack agent-ready.
Typed APIs and event pipelines that turn your existing systems into something an agent (or a human) can actually use. Webhooks in, queued jobs, retries with backoff, dead-letter queues, observability. The unsexy work that decides whether month nine looks like month one.
Mobile apps
iOS and Android on the same backend as your web app.
React Native (Expo) on top of the same Supabase project that runs the web product. One auth model. One data layer. One realtime channel. The mobile app is a view onto the same system, not a second system you have to staff.
Data pipelines
The substrate your agents and analysts read from.
Ingest from your operational systems, normalize, store in Postgres, expose through typed views. Reverse-ETL back into the tools your team already uses. The flat surface every other agent, dashboard, and decision sits on top of.
Four tools.
One production system.
No bespoke architecture spelunking on someone else's dime. We default to a stack that ships fast and ages well, and we deviate only when the system genuinely demands it. The same four tools every time so we can move on day one instead of week six.
Next.js
App Router, server components, edge and node runtimes in the same codebase. The app, the API, and the supervisor UI all live in one repo, deploy on one preview URL per PR, and ship as one production system.
Supabase
Postgres with row-level security, auth, storage, realtime, and edge functions. Five vendors collapsed into one, with an actual database underneath instead of a black-box document store. The agents and the operators read and write from the same tables.
Vercel
Global edge, preview environments on every branch, observability that surfaces production issues before customers do. Zero-config deploys for the team, paid by the client, owned by the client.
Claude Agent SDK
When the system needs an agent, it goes here. Tool inventory, escalation rules, audit trails, and security boundaries are code, not config. Anthropic-certified team, same operator advises and ships.
Production discipline,
from the first commit.
The platform is treated as production on day one. Not because the customers are on it yet, but because the habits decide whether month nine looks like month one. These are the rules we work to on every project, no exceptions.
Code review on every change
Nothing lands on main without a second pair of eyes. PRs run typecheck, lint, build, and the relevant test suite on Vercel preview before anyone clicks merge. The platform is treated as production from day one.
Eval-driven design where agents touch the system
Anywhere an LLM or an agent reads or writes, the contract is locked behind an evaluation harness. Recall, faithfulness, tool selection, charter compliance. Regressions get caught before a customer does.
Audit trails as a first-class table
Every action a human or an agent takes that mutates state writes a structured row to an append-only audit log. Who, what, when, why, what changed. The compliance story is built in, not bolted on.
Kill switches before launch
Every agent, integration, and outbound automation ships with a documented kill path. One config flip pauses the behavior without taking the rest of the system down. The on-call playbook is part of the deliverable.
Mid-market through Fortune 100.
Especially where an agent will plug in.
We build for the teams that need software an agent can plug into later, even if the agent is not the first thing shipping. The spine matters because the spine is what the next two years of automation hang from.
Mid-market operators
Teams scaling beyond off-the-shelf
You have outgrown the SaaS your team started on, and a Zapier-and-Airtable lashup is not going to survive the next round of growth. You need a real platform your operators can live in, and a team that ships it without disappearing into a six-month discovery phase.
Founders and CTOs
Serious software, not throwaway MVPs
You have a thesis that requires real software to test, not a clickable prototype. You want a platform that survives the round, the hire, and the agent strategy that lands six months in. We build it like infrastructure from the first commit.
Fortune 100 teams
Where the agents will eventually live
Your in-house teams ship the core product. The platforms that surround it (the operator consoles, the supervision UIs, the integration backbones the agents plug into) are where we come in. Built to your standards, handed back to you to run.
What you're probably
wondering.
Why Next.js, Supabase, and Vercel as a default stack?
Because the three of them compose into a production system on day one without weeks of glue code. Next.js handles the app and the API in the same codebase. Supabase gives you Postgres, row-level security, auth, storage, and realtime without standing up four vendors. Vercel ships it globally with previews on every PR. The result is a platform an operations team can run and an agent can plug into without a custom integration tax.
How is this different from a typical custom software shop?
Most custom software ships and then someone else has to figure out how to run it. We build the platform and the supervision layer in the same engagement: audit trails, kill switches, role-based access, human-in-the-loop gates, and the operator UI that makes the system actually ownable. The same team that ships the code also understands how operational agents live inside it, because we build those too.
Do you build mobile apps as well?
Yes. React Native (Expo) for cross-platform iOS and Android, sharing the same Supabase backend as the web app. The auth, the data model, the realtime channels, the storage rules all live in one place. The mobile app is a view onto the same system, not a second system you have to staff.
Can you work inside our existing codebase?
Yes. We pick up existing Next.js, React Native, and Node codebases regularly. We start with a short architecture read, document what we found, and propose the smallest set of changes that get the system to the point where the next agent or feature is a one-week build instead of a one-quarter project.
Who owns the code, the infrastructure, and the data when you ship?
You do. The repo is yours, the Vercel project is on your account, the Supabase project is on your billing, the domain is yours. We design for the day you no longer need us. The engagement ends; the platform keeps running.
Bring the platform spec.
We'll ship the infrastructure.
45 minutes. No pitch deck. We map the platform, name the smallest production-grade slice that earns its keep, and tell you whether YNDR is the right team to ship it. If yes, we scope it on the call.