https://kenkitts.com/tags/agents/Recent content in Agents on Ken KittsHugoenFri, 12 Jun 2026 00:00:00 +0000https://kenkitts.com/posts/agent-harness-part-3/Fri, 12 Jun 2026 00:00:00 +0000https://kenkitts.com/posts/agent-harness-part-3/The model forgets everything between API calls — so you carry the transcript, and you pay for it every single turn. Let's build the Session object, re-inject the plan to stop the model drifting, add a guard that won't let it fake 'done,' and stare at the token bill that memory quietly runs up.https://kenkitts.com/posts/agent-harness-part-4/Fri, 12 Jun 2026 00:00:00 +0000https://kenkitts.com/posts/agent-harness-part-4/Local tools are knives you forged yourself. MCP lets the model reach for knives someone else made, on someone else's server, behind an OAuth login. Let's wire a remote tool server into the same registry the local tools use — and stare hard at what it means to trust a tool you didn't write.https://kenkitts.com/posts/agent-harness-part-2/Wed, 10 Jun 2026 00:00:00 +0000https://kenkitts.com/posts/agent-harness-part-2/Tools are what turn a chatbot into an agent — and what turn a polite assistant into something with filesystem access. Let's build the decorator-based registry, wire it into Bedrock, and add the guardrails that stop the model from reading your SSH keys.https://kenkitts.com/posts/agent-harness-part-1/Mon, 08 Jun 2026 00:00:00 +0000https://kenkitts.com/posts/agent-harness-part-1/LLMs can only produce text. So how do they 'use tools'? Let's break down the agent harness — the code that turns a language model into something that can actually do stuff.