What is the Jev Classifier for Pi?

A pi agent extension that uses TypeSafe's Jev classification model through OpenRouter to gate risky tool calls, verify test and build results, and rank workspace files for a task.

How does the pre-tool risk gate work?

It listens on the tool_call event and asks Jev whether a bash, write or edit call is destructive and irreversible. If Jev judges it so, the extension blocks the call before it runs.

What does post-run verification check?

On the tool_result event it asks Jev whether the test or build actually passed, and alerts the model when there is a hard failure, according to the feature table.

How does workspace file ranking work?

The /jev-trim command asks Jev which file is the best starting point for the task and how relevant the workspace is overall, then trims the context accordingly.

Which model does it use and what does it cost?

The badge names OpenRouter's typesafe/jev-1.13, and the README lists roughly $0.00002 per call. That figure is the project's stated cost, not an independently measured total.

What happens when Jev is unavailable?

The description says the extension fails open on errors, and the README page notes that when Jev is unavailable it warns once. The captured text does not detail every fallback path.

Who built it and what is the project status?

It is a community project from the moisaporto GitHub account, MIT-licensed, with 0 stars and 0 forks; it was created and last pushed on 2026-10-06, so it is new and lightly tested by the community.

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CommunityJev Integrations & Adapters

Jev Classifier for Pi

A pi agent extension that routes TypeSafe's Jev classifier through OpenRouter to block destructive tool calls, verify test and build output, and rank workspace files for a task. It fails open and costs about $0.00002 per call.

See highlights Open github.com

Stars: 0
Language: TypeScript
License: MIT
Reading time: 2 min
Published by: Community
Author: moisaporto
Last verified: Oct 2026

moisaporto/pi-jev-classifier

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Pi extension that routes TypeSafe's Jev classifier through OpenRouter: blocks destructive, irreversible tool calls before they run, verifies test/build output and alerts on hard failures, and ranks workspace files by task relevance. Fails open on errors; ~$0.00002 per call.

Forks: 0
Last pushed: Updated Oct 2026

Repo stats from the GitHub API, cached Oct 2026.

Tagscommunity github typescript agents openrouter

Works forJev for Decision gating Jev for Verification Jev for Ranking

Used inJev for Software & DevTools

Languages: TypeScript
Platforms: OpenRouter
Capabilities: Open sourceRequires API key

Highlights

Pre-tool risk gate hooks tool_call and blocks bash, write or edit calls Jev judges destructive and irreversible.
Post-run verification hooks tool_result and alerts the model when a test or build hard-fails.
The /jev-trim command ranks workspace files by task relevance; /jev reports status, toggles and diagnostics.
Uses typesafe/jev-1.13 through OpenRouter at roughly $0.00002 per call, per the README badge and performance note.
Fails open on errors, and the extension is MIT-licensed with 0 stars.

Watch out

README reviewed 2026-10-17; the captured text shows the feature table and command list but stops before install and configuration steps, so the OpenRouter key setup and failure behaviour details beyond 'fails open' are unavailable. Metadata shows 0 stars.

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