What problem does ArchSteer solve?

AI agents write code faster than any architect can review, document, or govern. Docs rot instantly, the real architecture is invisible, decisions are made silently, and intended architecture drifts. ArchSteer makes architecture continuously observable and governable.

How is ArchSteer different from a linter or a diagram tool?

Linters check single-language rules; diagram tools require manual upkeep. ArchSteer maintains one code-derived model that powers living docs, auto-drafted ADRs, conformance with a net-new ratchet, an evolution feed, and AI-agent steering — all from the same source of truth.

Do I have to set up rules before I get value?

No. The read-only X-ray runs with zero config: point it at any repo and instantly see the current architecture and how it changed. Declaring intent for governance is an incremental, opt-in upgrade.

How does ArchSteer steer AI coding agents?

It injects sharp, file-scoped guardrails into CLAUDE.md / AGENTS.md / .cursor/rules that point at the governing ADR, so agents build toward the target architecture instead of copying adjacent legacy code.

Home › Migrations

Migrations

Migrating from Express to Next.js route handlers

The hard part of an Express→Next.js migration is that new code keeps reaching for Express. ArchSteer makes the target the default for agents and converges the migration with a ratchet.

Steer new endpoints to route handlers

Guardrails tell agents to implement endpoints as App Router route handlers under app/api, not Express routers.

Ratchet out the legacy

CI blocks net-new Express usage while existing routes migrate incrementally — no feature freeze.

Track convergence

A migration percentage and Drift Index show the move from Express to Next.js trending to done.

Try it on your repo

Run `archsteer xray` on your repo to see this in under a minute, then declare intent when you're ready to govern.

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FAQ

Do I have to stop shipping features?

No — the ratchet only blocks new violations, so features ship while the migration converges.

Will agents stop adding Express?

Steered agents build to the Next.js target; CI catches any net-new Express.

Migrating from Express to Next.js route handlers

Steer new endpoints to route handlers

Ratchet out the legacy

Track convergence

Try it on your repo

FAQ

Do I have to stop shipping features?

Will agents stop adding Express?

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