modelalive (JavaScript)

Universal LLM pre-flight gate — Alive (lifecycle) + Stable (behavioral drift) for 765+ models.

TypeScript/JavaScript SDK for Model Alive.

Install

npm install modelalive

Usage

import { alive, ensure, resolve } from "modelalive";
import { compareFingerprints, assertStable } from "modelalive";

// Lifecycle gate
ensure("openrouter/anthropic/claude-sonnet-4-6"); // → "claude-sonnet-4-6"

// Behavioral drift (Stable)
const report = compareFingerprints(baseline, current, 0.25);
assertStable(baseline, current);

See docs/STABLE.md and docs/UNIVERSAL.md.

Registry + stable prompts bundled at build time.