Claude Code Stop hook that checks the transcript for evidence before trusting a "done" claim, spending one four-question Jev call only when files changed with no passing check since, and failing open on every error path.
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TypeScript CLI (npm install -g jevctl) that turns Jev judgments into pipeable, exit-code-gated shell commands: verify claims against evidence, screen text for prompt injection before an agent reads it, classify, extract, match, route, find and rerank up to 250 candidates, compact agent transcripts by dropping stale tool calls verbatim, and batch any of them over JSONL with a concurrency pool; thresholds and --fail-on policy live in code, not prompts, it works over TypeSafe, OpenRouter, or Cloudflare Workers AI, and it ships as a Claude Code plugin with a compaction hook.
Pre-commit hook where one Jev call judges whether the commit message matches the staged diff, flags debug leftovers and unmentioned work, and blocks only when it detects a credential.
Decision layer for coding agents: deterministic rules run before any model call, then one Jev request, shipped as a Claude Code PreToolUse hook, an MCP server, a loopback service and a team policy where personal overrides may tighten thresholds but never loosen them. Includes an adversarial kit and its published results: over 300 calls, blunt injections moved 0 of 30 dangerous commands but caused 10% false denials on safe ones, while authority framing moved 3 of 30.
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