01
Apps are real code
Internal tools are real TanStack Start, React, and TypeScript projects, plus a Python and FastAPI runtime with a governed SDK. The durable asset is the project, not a saved canvas state.
Code-first internal tools
Code-first internal tools are real projects, not canvas configuration.
Relpin builds internal tools as real TypeScript, React, or Python code edited in Studio with a governed SDK, instead of opaque configuration locked inside a visual builder.
Search intent
code-first internal tools internal tools as code TypeScript internal tool builder
Phase timeline
Succeeded
- QUEUED Build job claimed on attempt 1. 17:23:17
- SOURCE Loaded 169 source files for the build sandbox. 17:23:17
- COMPILE Sandbox build produced deployable Worker output. 17:24:13
- PACKAGE Stored bundle 1515a3d50fdb…e8b9d. 17:24:35
- COMPLETE Build completed successfully. 17:24:35
deterministic source snapshot · sourceHash 7d47ab…bb2fb
Category position
Use visual assembly when an app is simple and low risk. Use a code-first model when the tool has to be reviewed, owned, and maintained by engineering over time.
How to evaluate
02
Edited in Studio, deployed as Workers
Code is edited in Studio in a Monaco editor, builds with Vite, and deploys as isolated per-tenant Cloudflare Workers behind a fail-closed dispatch router. A container-backed live preview runs the app without sending secrets or database credentials to the browser.
03
Code-first does not mean ungoverned
The governed SDK keeps SQL, secrets, and connector calls server-side. Code is reviewed before it becomes a pinned release that can be promoted through DEV, TEST, and PROD.
Evaluation checklist
- Apps are real TypeScript, React, or Python projects
- Governed SDK keeps SQL and secrets server-side
- Code is editable and reviewable, not locked in a canvas
- Per-tenant Worker deployment for each app
- Pinned release artifact before production
Related pages
Guides & Tutorials
All category guides for internal tool builders, AI agents, low-code limits, and production data.
Internal Tool BuilderThe core category page for governed internal tool building.
App BuilderThe product surface for building real internal apps in Relpin.
Low-Code Internal ToolsHow code ownership differs from low-code configuration.
Governed Internal ToolsHow code-first apps pass through governed releases.
FAQ
Frequently asked questions.
What are code-first internal tools?
Code-first internal tools are built as real source code rather than visual configuration. In Relpin they are TanStack Start, React, and TypeScript projects, plus a Python and FastAPI runtime, edited in Studio with a governed SDK.
Can code-first apps still use AI authoring?
Yes. Relpin supports governed AI authoring through OpenCode, which writes into the same real project. The generated code is still reviewable and still passes through the governed release path.
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