Will it silently fall back from local models to the cloud?

No. Enable only the instances you need; disabled local backends never load weights and disabled remote backends send no credential. There is no silent local-to-cloud fallback.

When do I use the one-shot CLI versus the server?

Use s1 once for shell pipelines and one-off decisions, and s1 serve to keep models loaded behind a bounded queue for repeated app or agent calls. Both return typed JSON.

Can I run the prebuilt s1 binary on Windows or an Intel Mac?

Not Windows, and there is no Intel macOS build: releases cover Apple Silicon macOS 14 or newer with Metal, or Linux x86-64 with glibc 2.35 and newer, and only the Apple Silicon build has been run with real weights. No Rust, Python, compiler, or Xcode is needed, but the archives carry no model weights and ship OpenJev plus the hosted kinds only, since Laya, Kev, and GLiNER2 are source builds. The macOS binary is not signed or notarized.

How do I add a backend without hand-editing config?

Run s1 setup to choose an offered backend, write config with backups, and download pinned checksum-verified weights. Hosted backends store only the key variable name, never the key.

Which backends ship in a prebuilt binary?

CI builds releases on v* tags, and they ship OpenJev and the hosted kinds only; Laya, Kev, and GLiNER2 are source builds, and only the Apple Silicon build has been run with real weights.

How do I install s1 without sudo?

Run the installer script: it downloads a prebuilt release, verifies its SHA-256 checksum, and installs without sudo. On macOS it clears the quarantine attribute from the verified executable without changing global Gatekeeper settings.

Does checking a backend or key ever get billed?

No. s1 backends only reads whether the named environment variable holds a value and never prints it, and the TypeSafe hosted API is never probed because a probe request is billed.

CommunityJev Models & Reimplementations

Systemone — codesoda

Rust CLI and resident HTTP service that exposes local and hosted decision models behind one Jev-compatible typed-JSON API with no generated prose to parse.

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License: MIT
Published by: Community
Author: codesoda
Last verified: Oct 2026

codesoda/systemone

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One CLI and Jev-compatible API for local and hosted typed-decision backends (planning)

Forks: 1
Last pushed: Updated Sep 2026

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About this project

One CLI and one Jev-compatible HTTP API for local and hosted decision models. Run s1 once from the command line, or start s1 serve to keep models loaded behind a Jev-compatible HTTP API. Both return typed JSON—no generated prose to parse. Point your application at s1 once; change the decision model in configuration, not in code. Download a release · Demo · Report a bug · Request a feature.

Quoted from the project's README. Read the full README.

Tagscommunity github

Works forJev for Classification

Used inJev for Software & DevTools

Highlights

Common Choice, Noul, and Score interface across OpenJev, Laya, Kev, GLiNER2, TypeSafe, Vercel, and OpenRouter.
s1 backends and GET /v1/backends report per-backend capabilities and extension support.
Layered configuration with s1 setup, checksum-pinned Hugging Face weights, and env-var credentials.
TypeSafe JS SDK compatible; hosted keys read from env and never probed when unset to avoid billing.

Watch out

Matching the wire contract does not mean matching accuracy or calibration; some backends are mock-tested or source-only builds. 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.

Other listings of this project

Forks and copies of this project in the directory. This entry is the canonical one.

systemone

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systemone

Self-hostable SystemOne-compatible API serving the frozen AutoJev Security V2.3 release as security-one, with shared-state parallel questions and bounded admission.

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