# JevLab

> Test thresholds. Measure trade-offs. Independent research, labeled benchmarks, bounded routing policies, and task-driven bookmark evaluation with Use Later.

JevLab provides deterministic benchmarks and downloadable TypeScript routing architectures for production AI agents. It evaluates confidence thresholds, fail-closed handoff logic, and latency trade-offs, alongside Use Later: a private, browser-based semantic search engine for X (Twitter) bookmarks powered by Jev semantic scoring.

## Core Documentation & Tools

- [Benchmark Lab](https://jevlab.dev/lab): Interactive playground to explore confidence thresholds, auto-adopt vs handoff decisions, and confusion matrices.
- [Methodology](https://jevlab.dev/methodology): Formal benchmarking protocol, dataset labeling standards, error classification, and score derivation.
- [TypeScript Router Integration](https://jevlab.dev/docs): Implementation guide for bounded TypeScript routing with pinned model jev-1.13.0, confidence gating, and fail-closed safety.
- [Use Later](https://jevlab.dev/uselater): Local-first search and task-based resurfacing tool for X (Twitter) bookmarks and Bookmark X backups.
- [Use Later Workspace](https://jevlab.dev/uselater/app): Browser workspace to import bookmarks, run semantic queries, and manage local libraries.
- [Use Later Privacy](https://jevlab.dev/uselater/privacy): Architecture details on client-side IndexedDB storage and zero server retention guarantees.
- [Privacy Policy](https://jevlab.dev/privacy): Privacy disclosures and data handling policies.

## Articles & Case Studies

- [Fast Decisions in Agent Workflows: Laya vs TypeSafe Jev](https://jevlab.dev/blog/laya-vs-jev): A technical evaluation of Convai's open-source ModernBERT decision engine (Laya) and TypeSafe's hosted routing primitive (Jev) across latency, calibrated probabilities, multilingual reach, and threshold-driven handoffs.

## Developer APIs & Exports

- [TypeScript Router Export API](https://jevlab.dev/api/exports/typescript?catalog=0.1&threshold=0.80): Direct download of production-ready TypeScript routing code.
- [Use Later Search Endpoint](https://jevlab.dev/api/uselater/search): Direct streaming evaluation endpoint for bookmark ranking against task queries.

## Optional & Full Context

- [Full Documentation Dump](https://jevlab.dev/llms-full.txt): Comprehensive documentation, architecture details, and full code examples in a single text file.