Breaking: Browser Use + Jev = Ultrafast ⚡ Findings flights took 7s and cost only $0.0039 🤯 > new action space every step > DOM state space > small LLM fallback to type (this video is at 1x speed btw) Built a tiny open source browser agent. try it below ↓
TypeSafeAI for .NET
.NET SDK for the System One API with typed question sets, HttpClientFactory and dependency-injection wiring, plus Microsoft.Extensions.AI guardrail, routing, tool, and evaluator adapters.
- Category
- Repos & SDKs
- Published by
- Community
- Author
- Hawxy
- Added
- 2026-09-22
Tagscommunitysdkcsharpdotnetguardrailsrouting
Highlights
- A QuestionSet returns typed handles: Noul answers give a probability, Choice an enum label, Score a level with its legend.
- Retries and per-attempt timeouts run on a Polly resilience pipeline with an injectable TimeProvider for tests.
- Two packages: the core TypeSafeAI client and TypeSafeAI.Extensions.AI for guardrail, routing, tool, and evaluator middleware.
- Targets net8.0 and net10.0, and the package is trim and NativeAOT safe.
Quickstart
csharp
using TypeSafeAI;
using var client = new TypeSafeClient("YOUR_API_KEY");
var q = new QuestionSet();
var urgent = q.Noul("Does this convey urgency?");
var category = q.Choice<TicketCategory>("What is this ticket about?");
var result = await client.SystemOneAsync("Payouts have been failing for 3 days.", q);
double p = result.Get(urgent).Probability;Watch out
Apache-2.0. A community SDK, not affiliated with TypeSafe; needs an API key, and live tests skip without TYPESAFE_API_KEY.
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From the community
Posts from builders shipping with Jev right now.
Browser Use Ultrafast, powered by Jev
A really smart switch statement
hype-free explanation of jev: jev does not replace gpt / claude jev is just a *really* smart switch statement like if 2016 ml classifiers got 2026 levels of intelligence it's a new* type of tool that will make a lot of workloads insanely fast, cheap, and accurate * = and by Show more
@CompleteSkeptic
After co-inventing ChatGPT, I kept asking myself: why have superhuman chat models not led to AGI? I’ve spent the last 2 years in stealth building a new way to train models (RLCD), and a new type of frontier AI model that we are releasing today: Jev • 20-200x faster • 40-400x
When a designer gets Jev
when a designer gets access to Jev
Full Jev video tutorial
Full Jev Tutorial What it is, how you can build with it and what new applications it can unlock → 0:00 Intro → 0:34 Jev explained → 4:06 API setup → 5:59 Demo 1: Voice-controlled browser → 11:33 Demo 2: AI memory → 17:27 Demo 3: YouTube predictor
The case against Jev-scored compaction
This is a terrible compaction strategy that fundamentally doesn't understand how compaction and context management work. Seems like a lot of people are confused so let's break this down. 1. Compaction isn't a filter The role of compaction is to clean up history to keep the Show more
found the perfect use case for @typesafeai Jev: instant compaction in 2026, why is compaction still a summarization prompt? Jev can make it instant by scoring every tool call and dropping what’s irrelevant
Classifying rows in DuckDB
I made a DuckDB extension where you can use @typesafeai 's Jev to do quick classification of rows in any csv/parquet file or duckdb table about 10sec for 1k rows ~ better than using an LLM, way more ergonomic than a classifier game-changing for data analysis!
