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Guardrails Before Gas: Secure Plan‑Then‑Execute Agents for Real Work

Every executive agent demo eventually reaches the same awkward moment: the model stops being a chatbot and starts touching things. Files. APIs. Databases. Code runners. Email clients. Payment workflows. Production systems, because apparently we enjoy giving probabilistic text engines access to expensive buttons. The paper Architecting Resilient LLM Agents: A Guide to Secure Plan-then-Execute Implementations argues that the core safety problem is not merely that agents sometimes reason badly. The sharper problem is that many agent architectures let untrusted information change what the agent decides to do next.1 That is a control-flow problem. And control-flow problems are not solved by asking the model, very politely, to behave. ...

September 14, 2025 · 15 min · Zelina
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Agents of Allocation: Crypto Portfolios Meet Crew AI

TL;DR for operators A new paper uses CrewAI to build a multi-agent workflow for crypto portfolio construction, then compares three allocation logics: equal weighting, static mean-variance optimisation, and 30-day rolling Sharpe maximisation across ten major crypto assets from 2020 to 2025.1 The headline result is not that “AI agents beat crypto markets.” Please put that sentence down before it hurts someone. The useful result is narrower and better: in a volatile asset class, a rolling allocation strategy outperformed a fixed one on risk-adjusted metrics, while the agentic architecture turned the research process into a modular, inspectable pipeline. ...

August 3, 2025 · 14 min · Zelina