# Simple Jev, reusing the KV cache

Simple Jev reuses a shared-context KV cache, reads only the next-token logits of the candidate labels, and assembles the choice, score and truth judgement on the server side.

Grade: A — A clean typed decision \(yes/no, a pick from a list, or a level on a scale\) that is concrete, repeats routinely, and has meaningful value.. Score: 3.29.

Vertical: Software & tech.

Function: Agents & dev.

Status: Seen in the wild.

Volume: routine.

Value: meaningful.

Risk: low.

Evidence: described plan.

Flags: None.

- [Source](https://madewithjev.com/builds/simple-jev-kv-cache-reuse)
- [Vertical](/verticals/saas_tech/)
- [Function](/functions/agents_dev/)
- [Prompt injection detection guardrail](/use-cases/prompt-injection-detection-guardrail/)
- [LLM output safety classification](/use-cases/llm-output-safety-classification/)
- [LLM cost-quality routing with RouteLLM](/use-cases/llm-cost-quality-routing-with-routellm/)
- [Claude Code hooks pre-tool-use validation](/use-cases/claude-code-hooks-pre-tool-use-validation/)
- [Log sensitive-data leak](/use-cases/log-sensitive-data-leak/)
- [Prompt injection scanner](/use-cases/prompt-injection-scanner/)