Autonomous agents increasingly take consequential actions — moving money, calling privileged tools, touching sensitive data. You cannot delegate action-authority to a system you cannot audit. A deterministic decision — same input, same verdict, no model in the scoring path — is reproducible in isolation and replayable after the fact.
That is the trust primitive the autonomous economy needs: not another probabilistic guardrail, but an independently recomputable authorization boundary with reason codes and a signed, replayable receipt. Quesen answers should this action proceed? with PASS / REVIEW / BLOCK / SKIP before execution.
pip install quesen-sdk # Python
npm i quesen-sdk # JavaScript / TypeScript
pip install quesen-langchain # LangChain
pip install quesen-crewai # CrewAI
pip install quesen-autogen # AutoGen
Free sandbox key (no signup, no card): curl -X POST https://web-production-3df26.up.railway.app/sandbox/keys