DeesseJS
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DeesseJS logoDeesseJS

Software engineering as a commodity: agents that code, workflows that scale, infrastructure that works. Built with the DeesseJS ecosystem.

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© 2026 DeesseJS. All rights reserved.

The ecosystem

The DeesseJS ecosystem.

DeesseJS is more than a templates registry. It's a stack of small apps, SDKs, and shared contracts that ship together. Each sub-domain earns its place by solving one problem end to end, and they all talk to each other through the same contracts.

Sub-domains

Click any to open in a new tab. Each product lives at its own URL, alongside this site.

ERRShipping

Errors

Structured error tracking: the missing signal in any agent-driven stack.

errors.deessejs.com
DRPCIn beta

DRPC

Durable RPC primitives for long-running agent workflows.

drpc.deessejs.com
CLShipping

Collections

Type-safe data access for the contracts your templates already publish.

collections.deessejs.com
FPShipping

FP

Functional primitives the SDK leans on. Small, sharp, no runtime cost.

fp.deessejs.com
UIShipping

UI

Component library on top of shadcn. The DeesseJS look across every surface.

ui.deessejs.com
ADMIn beta

Admin

Operator console for the apps you ship. Auth, billing, audit, all reachable.

admin.deessejs.com
CLComing soon

Cloud

Hosted runtime for the templates. Preview, deploy, observe, scale.

cloud.deessejs.com
TTShipping

type-testing

Assertion-style type tests for the SDKs and shared contracts. Positive, negative, and deep inference in one suite.

www.npmjs.com/package/@deessejs/type-testing

What holds it together

One contract, every surface

Errors, Collections, and FP all speak the same Zod shape. A change in the contract propagates to every consumer on publish, same as the templates.

Open source by default

Every sub-domain ships MIT when it's stable enough. The brand, the marketplace, and the curated registry stay ours. The source-code ecosystem is shared.

Smallest useful version first

Each sub-domain enters the ecosystem in alpha, stays in beta until it earns a production install, and only then opens to third-party contributors.

Read next

AboutWho we are, and how we got here.ManifestoWhy we're here: the beliefs behind the work.PrinciplesHow we work, day to day.VisionWhere this is going next.

Start here

The fastest way into the ecosystem is a template. It pulls the same contract and the same defaults as the apps above.

Browse templatesRead the manifesto