Unix Pipe Brings Jev to Claude Code
jevpipe is a small CLI wrapper for TypeSafe’s Jev System 1 model that lets Claude Code use it during a task. It accepts piped lines or files and returns classifications.
bothlabs in r/ClaudeAI@bothlabs
I built a Unix pipe that lets Claude Code use Jev as a fast System 1
I built jevpipe as a wrapper for TypeSafe's Jev System 1 model. Jev answers yes/no, picks from a few choices or gives a score, with probabilities, and it's fast and cheap. See the TypeSafe docs for more details. It performs on par with small LLMs while being faster and cheaper (independent study), and in my benchmark it was better calibrated than DeepSeek V4.1 Flash. I wanted Claude Code to be able to use such a System 1 in the middle of a task without writing a script each time. So jevpipe is a small CLI that can be used like grep or other Unix tools: pipe lines or files in and get classifications out. cat abstracts.jsonl | jevpipe filter "Does this paper report a randomized trial?" map asks several typed questions at o
Jev answers yes/no questions, picks from a few choices, or gives a score with probabilities. The author says Jev performs on par with small LLMs and was better calibrated than DeepSeek V4.1 Flash in their benchmark.
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