Notes from building agent systems

Evaluation harnesses, orchestration patterns, memory design and the failures behind them — written up while the details are still fresh.

All posts llm-agents 4 agent-safety 2 evaluation 2 multi-agent-systems 2 orchestration 2 agent-economics 1 agent-evaluation 1 agent-failure-modes 1 agent-governance 1 agent-memory 1 agent-sandboxing 1 agent-security 1

Industrial robotic arm inside a factory cell, joints and cabling visible in dim light

20 Sept 2026·6 min read

Coding Agents Need a Sandbox Contract, Not a Warning Label

An autonomous coding agent's blast radius is defined by its sandbox and network egress rules. Specify that contract before you specify the agent.

agent-sandboxingcoding-agentsnetwork-egress

Laboratory microscope with illuminated lens and precision adjustment knobs on a bench

20 Sept 2026·6 min read

Authority Budgets: The Missing Control Surface Between an Agent and Its Tools

Prompt constraints are advisory. Real safety comes from treating each capability as a spendable authority budget: scope, quota, expiry, and attestation.

agent-safetyauthority-budgetstool-use