Use Laya from Node.js
You can run Laya inside a Node.js process with ONNX Runtime, or keep the model in a separate server and call it over HTTP. Both routes use the same state-plus-typed-questions request shape as the Python package and the Jev API.
141 projects
kevin
gauravsaini
Runs a browser automation agent that uses Laya-ONNX to rank candidate actions
decision-model-playground
tedliou
A local web playground comparing Laya and Jev for recommending articles
jeffrey
thomasbrueggemann
A coding-agent CLI uses Jev or Laya to choose tools while a configurable LLM executes them
laya-mcp
andragon3110
Provides MCP tools for coding-agent judgments using local decision models, including Laya
omp-laya
KiidxAtlas
Adds local Laya decision policies and verification controls to Oh My Pi
chatassistant-laya
HarrisXiu
Analyzes pasted chat messages locally with Laya and can generate optional reply suggestions
laya-jev-arena
dante01yoon
Compares local Laya and hosted Jev models in games and measurement tools
decision-infra
hufaei
Routes typed-decision requests to hosted Jev or local Reflex, SemIf, and Laya models
system-one-playground
minkhant1996
Provides a local web playground for Laya and other System One decision models
building-with-laya-skill
MIt9
An agent skill teaches developers to build typed-decision programs with Laya and laya-cli
agent-decision-firewall
chinna250801
Gates AI agent actions with a local Laya decision model and fail-closed rules
laya-studio-node
ajayjha1
Provides a Node.js and TypeScript toolkit for Laya classification, routing, CLI, and MCP use
laya-decision-api
bmw8080
An HTTP service wraps local Laya with OpenAPI documentation and Java, TypeScript, and Python SDKs
design-os-generative-ui
jangtrinh
Builds a generative UI engine using local Laya-MLX decisions and a TypeSafe JEV cascade router
adecider
Agents365-ai
Provides typed decision tools for coding agents with pluggable local Laya, Jev, and OpenAI-compatible backends
leanest
baronunread
A TypeScript test selector uses semantic judgments from classifier.dev, Jev, or Laya
@system-one-ai/model-laya
GitHub Actions
Adds optional Laya model plugins to System One browser and Node runtimes
pi-laya-guardrails
izolight
A Pi extension sends prompts and tool calls to a local Laya guardrail server
@scruple/provider-laya
nalexpear
A local Laya decision provider for the Scruple framework
opencode-jev-compaction
jlegends
Two OpenCode plugins prune stale tool calls and optionally refine decisions with local Laya
@gobing-ai/ts-laya-mlx
GitHub Actions
A TypeScript package connects applications to a local Laya decision backend through MLX
pi-laya-model-router
izolight
Routes Pi sessions to mapped models using task classifications from a local Laya server
modsure
davespace
Moderates user-written content against site rules using Jev or a loaded Laya client
reflex-hooks-oss
lia210350
A Node provider runs the Laya decision model locally through ONNX for reflex-hooks
In-process: @receptron/laya
@receptron/laya runs the model with ONNX Runtime, so neither Python nor PyTorch is needed at runtime. It requires Node.js 20 or newer.
npm install @receptron/laya
import { Laya } from "@receptron/laya";
const laya = await Laya.load();
const result = await laya.systemOne(
{ subject: "Refund not received", body: "I cancelled two weeks ago and still have no refund..." },
{
department: {
type: "choice",
instructions: "Which team should handle this ticket?",
criteria: { billing: "payments, refunds, invoices", support: "product help and bugs", sales: "new purchases" },
},
churn_risk: { type: "noul", instructions: "Is the customer likely to cancel or dispute?" },
},
);
result.answers.department.choice; // "billing"
await laya.close();
Per its README, the fp32 ONNX weights are about 1.7 GB and download on first use. Budget roughly 2 GB of RAM. A three-question call takes about 140 ms on an Apple Silicon CPU once warm, and the output matches the Python implementation to four decimal places. The package is MIT-licensed; the weights are Apache 2.0.
Over HTTP: laya-studio
laya-studio is a zero-dependency TypeScript client for a running Laya server (Node.js 18.17+):
npm install laya-studio
pip install "laya[serve]"
laya-serve # binds 0.0.0.0:8000
Other JavaScript projects
- @r4ai/laya-web: ONNX Runtime Web runtime for browsers and Node.js.
- kevala: a Rust engine compiled to WebAssembly with WebGPU kernels, installable from npm.
- gg-friggin-ez: a profanity and toxicity screener that defaults to Jev and can point at a local Laya endpoint.
Caveats
The English checkpoint's options must fit a 192-token budget and the state is cut at 512 tokens. The receptron README recommends fewer than about 20 options per choice question.
More ways to use Laya