Maksym Mishchenko — Blog https://mmishchenko.dev/blog Software engineering, security, and building tools that solve real problems. en agent security: what microsoft shipped (and what you still need to build) https://mmishchenko.dev/blog/agent-security-what-microsoft-shipped https://mmishchenko.dev/blog/agent-security-what-microsoft-shipped Microsoft Entra Agent ID provides identity and OAuth. It does not prevent jailbreaks, enforce tool boundaries, or stop data exfiltration. Here is the architecture gap and what to build. Tue, 26 May 2026 00:00:00 GMT How I Actually Test AI Agents https://mmishchenko.dev/blog/how-i-test-ai-agents https://mmishchenko.dev/blog/how-i-test-ai-agents Everyone talks about evals but nobody shows you the boring part: the labeled test set, the scoring script, and what you do when the number doesn't move. Mon, 25 May 2026 00:00:00 GMT What Nobody Tells You About Running MCP Servers in Production https://mmishchenko.dev/blog/mcp-servers-in-production https://mmishchenko.dev/blog/mcp-servers-in-production Six months, three production MCP servers, twelve real failures. The thing that broke everything wasn't the protocol — it was the descriptions. Sat, 23 May 2026 00:00:00 GMT How to Write a Good Skill for an AI Agent https://mmishchenko.dev/blog/how-to-write-a-good-skill-for-an-ai-agent https://mmishchenko.dev/blog/how-to-write-a-good-skill-for-an-ai-agent Skills are the difference between an agent that actually works and one that confidently does the wrong thing. Here's what I learned building 50+ of them. Tue, 12 May 2026 00:00:00 GMT Writing Good AI Agents: What I Learned Running a Fleet of Them https://mmishchenko.dev/blog/writing-good-ai-agents https://mmishchenko.dev/blog/writing-good-ai-agents Practical lessons from deploying and running multiple AI agents in production — what actually works and what blows up. Fri, 08 May 2026 00:00:00 GMT Building Better AI Agents: Lessons from Running 40+ in Production https://mmishchenko.dev/blog/building-better-ai-agents https://mmishchenko.dev/blog/building-better-ai-agents Why constraint, clarity, and oversight matter more than intelligence when working with AI agents. Thu, 07 May 2026 00:00:00 GMT From Copy-Pasting ChatGPT to AI That Runs My Workflow https://mmishchenko.dev/blog/from-copy-pasting-chatgpt https://mmishchenko.dev/blog/from-copy-pasting-chatgpt How I went from pasting errors into ChatGPT to having Copilot CLI fix tests, create PRs, and manage my projects. Tue, 05 May 2026 00:00:00 GMT First Post (Again) https://mmishchenko.dev/blog/first-post-again https://mmishchenko.dev/blog/first-post-again Starting a blog about AI agents. Again. This time might actually stick. Sun, 04 May 2025 00:00:00 GMT