Command Line
Founded in 2026, Command Line is a technical blog from Microsoft where we share how we build and what we learn—from both our wins and failures
commandline.microsoft.comSEMICONDUCTOR DESIGN AND FABRICATION
Designing product simplicity for the AI era
Shared design components aren’t enough to ensure a seamless product experience. Can designers create consistency by embracing simplicity over complexity?
IBMOWEN RICHARD
DEV OPS AND SITE RELIABILITY
Your agent’s guardrails have a bypass
Agents are moving into production faster than the governance around them. Today’s controls are framework-specific, mostly observe-only, and fail open when they crash. To help address this, we created Agent Hooks: an open, framework-neutral governance contract with conformance testing on both sides. What follows is the contract and the story of proving “deny means deny” inside a real framework core.
MICROSOFT
AI ETHICS AND GOVERNANCE
One requirement, many failure paths: Evaluate, control, and optimize with ASSERT and ACS
A safety requirement might appear simple while the runtime failure surface is complex. ASSERT helps identify coverage bugs; ACS fixes the policy.
ML OPS AND MODEL ENGINEERING
How we built ThinkingBox to measure whether agents finish the job
ThinkingBox separates the execution framework from the benchmark package. This split lets builders update the harness and benchmark independently.
PROGRAMMING LANGUAGES AND COMPILERS
Watch TypeScript creator Anders Hejlsberg on The Peterman Pod
Following the release of TypeScript 7.0, Hejlsberg joins host Ryan Peterman to discuss the process of porting from JavaScript to Go, the pros and cons of agentic AI for coding, and more.
