Show HN: Kybernis – AI 에이전트가 동일한 작업을 두 번 실행하는 것을 방지합니다.

Stop your AI agents from double-charging APIs. Diagnose agent failure loops locally with our open-source CLI, or drop in the SDK to hard-block semantic double-spends before they hit production. LLMs don't understand execution boundaries. Network lag causes timeouts. Timeouts cause LLMs to retry. If your agent times out on a payment API, it just issues a second payment. This is the Semantic Double-Spend. Without Kybernis Agents retry blindly on errors, causing duplicate mutations in your database. With Kybernis We evaluate semantic intent and hard-block hallucinated retries instantly. Observability X-Ray your local agents. Watch them attempt duplicate writes before you deploy. Get started in 2 minutes No complex dashboards. Just code. Install SDK Install the package. npm install @kybernis/sdk Wrap your Tools Wrap any LangGraph or MCP tool. import { withGuard } from '@kybernis/sdk'; const safeRefund = withGuard(paystackRefund); Execute Safely Kybernis guarantees exactly-once execution. await safeRefund({ amount: 50000 }); Developer FAQ Because engineers hate surprises. No. The Kybernis SDK evaluates the semantic signature locally in under 10ms before allowing the network request to proceed. It operates entirely out of the critical path of your external API response. Absolutely not. We hash the execution context and semantic intent into a secure signature locally on your machine. We never see or store your raw PII, API keys, or payload data. No. Kybernis is an execution safety layer, not an orchestrator. You still build your agents in LangGraph or connect them via Anthropic MCP. You simply wrap your high-risk tools with the Kybernis SDK to protect the execution boundary. Built for developers who hate incident reports. We kept running into the same problem: putting agents in production was terrifying because of unconstrained retries. So we started building Kybernis—a faster, safer way to orchestrate tool execution. Kybernis is actively used in our internal agent workflows. We are onboarding 15 developers this month to shape the product. Join 17 other devs currently testing the CLI. Takes 2 minutes. No setup. No BS.