Twenty things people
have built with Jev.
Agents, developer tools, experiments and open implementations from the first week of TypeSafe's structured evaluation model.
Ranked by GitHub stars · checked September 17, 2026Jev Ultrafast
A browser agent where Jev selects each operation and page element. Its reference demo completes a Google Flights search from one goal in roughly seven seconds.
Fast Jev Compaction
A Claude Code plugin that has Jev score every tool call and result, dropping or truncating stale context while keeping retained content verbatim.
OpenJev
An experiment in running a Jev-like decision model locally on consumer hardware, with an open implementation aimed at a single RTX 3090.
Jevlike
An independent starter model that scores a changing list of text options in one pass, including training, evaluation, calibration, Doom, and chess examples.
Jev Trader
An autonomous trading experiment that asks Jev for one market decision on every Monad block and executes against Kuru's MON–USDC market.
TypeSafe Mario
A Jev agent that plays Super Mario Bros. by choosing actions from structured emulator state rather than consuming screenshots as free-form prompts.
Foreman
A software-factory foreman that uses Jev as the decision layer for coordinating and supervising automated engineering work.
Jev Review
A staged code-review workflow and local dashboard where Jev evaluates risk, tests, security, reliability, and reviewer routing independently.
TypeSafe Computer Use
A macOS computer-use loop that OCRs the screen, asks Jev to classify the next action and target, then clicks at a reported cost near $0.0002 per step.
Jev Router
A Claude Code router that uses Jev to classify each task and send it to the least expensive model suited to the work.
Jev Eval Agent
A controlled benchmark comparing direct LLM tool selection with Jev choosing among 100 tools before each agent step.
OpenJev SGLang
A Jev-compatible API endpoint built on open models with a prefill-only inference path for constrained decisions.
Jev Browser
A focused element-selection layer that adds Jev decisions to an agent's existing browser and computer-use tools.
pg_jev
A PostgreSQL extension that lets applications ask natural-language questions about table data and receive structured Jev decisions inside Postgres.
Mobile Jev
A standalone Android agent for Mobilerun. Jev selects operations and targets from live device state, with a React studio, CLI, traces, and latency measurements.
Unclutter
A browser extension that uses Jev to identify page clutter and remove it with reusable rules for each site template.
Jev Drone
A camera-only autonomous drone in MuJoCo that keeps TypeSafe Jev in the control loop at 2.5Hz.
Jev MCP
A proof-of-concept MCP server that exposes TypeSafe's Jev model to MCP-compatible agents and development tools.
Jevmeter
A live Jev meter for video: it transcribes and scores every sentence, then renders the changing evaluation as a 16:9 video overlay.
jevlogs
An OpenTelemetry log-triage package that uses Jev to score urgency and value before sending selected records to more expensive LLM analysis.