Jev-rs: a Rust crate to turn a LLM to serve jev
jev-rs System One judgments from any LLM, in one prefill. A Rust engine that answers typed questions about a piece of state — noul (yes/no), choice (one of N), score (ordered scale) — with probabilities, never generated text. Wire-compatible with TypeSafe's Jev POST /v1/systemone, and exposed to coding agents as an MCP tool.
- ▪jev-rs System One judgments from any LLM, in one prefill.
- ▪A Rust engine that answers typed questions about a piece of state — noul (yes/no), choice (one of N), score (ordered scale) — with probabilities, never generated text.
- ▪Wire-compatible with TypeSafe's Jev POST /v1/systemone, and exposed to coding agents as an MCP tool.
Hacker News (AI / LLM) files mainly under ai. We currently carry 6,106 of its stories.
Story provenance
Source · retrieval · rights · ranking — open for full record
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Story provenance
Attribution is not the same as permission. This drawer separates discovery metadata, excerpts, WeSearch-generated summaries, reuse status, and whether the publisher receives the visit. Nothing here claims a legal grant the publisher has not made.
Record
| Original publisher | GitHub |
| Canonical URL | https://github.com/yijunyu/jev-rs |
| Publication time | Wed, 23 Sep 2026 12:02:22 +0000 |
| Retrieval time | 2026-09-23T12:04:30.442Z |
| Last seen | 2026-09-23T12:04:30.442Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | CqKvIC_78WMa · 1 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
jev-rs System One judgments from any LLM, in one prefill. A Rust engine that answers typed questions about a piece of state — noul (yes/no), choice (one of N), score (ordered scale) — with probabilities, never generated text. Wire-compatible with TypeSafe's Jev POST /v1/systemone, and exposed to coding agents as an MCP tool. Claude Code / Codex / Grok Build / OpenCode ──MCP stdio──▶ jev ──▶ llama-server (any GGUF) TypeSafe SDKs (TYPESAFE_BASE_URL) ──────────POST /v1/systemone──▶ jev serve ──▶ llama-server Install curl -fsSL https://raw.githubusercontent.com/yijunyu/jev-rs/main/install.sh | sh Installs a prebuilt jev into ~/.local/bin (macOS arm64/x86_64, Linux x86_64/arm64) or builds from source with cargo if no binary matches. With a Rust toolchain, cargo install jev-rs works too.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at GitHub.