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- Tool
CryptoOda/typesafe-guard
LLM-agnostic guardrails library using Jev to detect prompt injection, jailbreak attempts, PII exposure and credential leaks in one batched request. Not published to PyPI at time of check.
- Tool
leepokai/jev-guard
Security hook for coding agents that risk-scores every tool call with session context (deny/ask/allow), flags prompt injection in tool results and checks skills and plugins. Supports Claude Code, Codex, Copilot, Gemini, Cursor, pi, OpenCode and ACP.
- Article
Testing TypeSafe Jev, Mistral and Gemini for local event validation
Near Here compares Jev with Mistral Small 4 and Gemini 3.5 Flash-Lite at rejecting unsuitable local event listings, each with its own tuned prompt. Jev scored 48 of 50 on the main test set at a median 0.58 seconds, and the post includes token counts, cost per decision and a downloadable comparison PDF.
- Cookbook
Cookbook: Guardrails for LLMs
Screens LLM inputs and outputs with typed checks so unsafe or off-policy content is caught before it is used.
- Discussion
Rethinking security engineering with Jev (X)
Argues that the purely engineering decisions inside security workflows belong to a typed decision model like Jev rather than a chat model.
Kostas Tsale (@Kostastsale)OpenRethinking security engineering with Jev (X) on x.com - Tool
TypeSafe workflow evals site
Official site publishing TypeSafe's four workflow evals (security incidents, agent-trace observability, invoice processing, customer service) with per-model accuracy, cost and latency, including Jev alongside Claude, GPT and Gemini models.