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Use local and hosted classifiers aka decision models aka Jev-like models, all through a single TypeSafe API
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- Updated Sep 2026
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CommunityJev Tools & CLIs
One System
Gateway that sits between an app and compatible System One servers, routing one request to local Laya, hosted Jev, or a model-chosen backend under a single client interface.
- Stars
- 9
- Language
- TypeScript
- License
- MIT
- Published by
- Community
- Author
- rawwerks
- Last verified
- Oct 2026
About this project
Use local and hosted decision models through one API. One System sits between your application and compatible TypeSafe System One servers. Send your data and questions once; choose a backend directly or let a model help decide where the request should run. These models return decisions your code can use: Choice selects an option, Noul gives the probability of yes, and Score rates against levels you define. They return typed answers and probabilities, rather than writing a chat reply.
Quoted from the project's README. Read the full README.
Works forJev for Classification
Used inJev for Software & DevTools
- Languages
- TypeScript
Highlights
- Ships example configs for mixed privacy-demo routing, local-only local-demo, hosted selection, and Jev lint.
- Installs as a binary with a checksum-verified script under the home directory, with no Go toolchain or sudo needed.
- Direct backend IDs like local or hosted bypass selection without silently substituting another backend.
- Optional TypeScript composition helpers add routing, fan-out with adjudication, and recursive classification.
Watch out
Privacy Demo classifies task domain, not sensitive data, and single-backend requests skip selection even when hosted; hosted calls need a TypeSafe key and can incur charges. Copy reviewed against the repository README on 2026-10-04, not from running it.
Questions about this entry
Short answers drawn from the linked project or page.
No. Its rule classifies the task domain from question instructions, routing math-or-logic over 0.5 to hosted Jev; it does not inspect input for sensitive data, so use the local-only configuration when requests must stay local.
One client interface covers local and hosted backends, lets suitable tasks run on local Laya while escalating the rest, supports capability constraints with explicit 422 rejections, and leaves model choice to config or per-request backend IDs.
No Go install or compiler is needed to run the gateway. The installer verifies the archive checksum, drops the binary under ~/.local/share/one-system, and creates ~/.local/bin/one-system without sudo. The guides start local Laya on port 8091 and the gateway on 8090, and privacy-demo needs a TypeSafe key for anything it escalates to hosted Jev, which can incur charges; local-demo needs no hosted key.
No. It ships no LLM client and hosts no text generation; your code supplies any Generate function or agent CLI, and helpers validate drafts and author System One questions against the pinned schema and route capabilities.
privacy-demo selects locally and escalates to hosted Jev by rule, local-demo runs Laya only and needs no hosted key, routing-demo does hosted selection across local and hosted backends, and jev-lint does hosted code-review judgments with a pinned model.
A backend can declare capabilities: question_types, max_questions, min_criteria, max_criteria and structured_state. They apply on every route including selection and fallback, and an unsupported request returns HTTP 422 unsupported_capability rather than dropping or reinterpreting questions.
Yes. Set a request's model to a backend ID such as local or hosted, and a direct call does not silently substitute another backend.
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