How to Write AI Agent Evals That Prove You Wrong
Write AI agent evals that catch what you missed: source cases from production traces, spot tests that pass for the wrong reason, and know when to overrule an LLM judge.
Evals• 17 min read
All posts
Everything on building AI agents, newest first. Looking for the deep dives? Start with the guides.
Securing an MCP v2 Server with OAuth and Keycloak
What changes for OAuth when you move an MCP server to v2. The MCP TypeScript v2 SDK moves the auth helpers into @modelcontextprotocol/express and surfaces auth info via ctx.http.authInfo — your Keycloak setup stays exactly the same.
MCP• 8 min read- Complete Guide
Build an MCP v2 Server in TypeScript with the New MCP SDK
Build a stateless MCP v2 server in TypeScript. A hands-on guide to the MCP TypeScript v2 SDK — the new @modelcontextprotocol/server packages, createMcpHandler, Standard Schema tools, and what replaces session handling.
MCP• 11 min read - Complete Guide
MCP v2: What's Changing, What's Deprecated, and Why
MCP v2 breaking changes explained: the protocol goes stateless and deprecates sampling, roots, and logging. What changed across every MCP SDK, why, and how to plan your migration.
MCP• 10 min read - Complete Guide
Is LangChain Worth It in 2026? A Practitioner's Guide From Building to Production
Is LangChain worth it in 2026? A practitioner's guide to the v1 stack: create_agent, middleware, deploying, observing, and MCP, with an honest verdict.
AI Agents• 13 min read 
Top 7 AI Agent Evaluation Frameworks (2026)
Discover the top open-source AI agent evaluation frameworks in 2026. From DeepEval and promptfoo to agentevals and Strands Evals, see which eval tools to use for trajectory checking, CI gating, red-teaming, and scoring agents in production.
Evals• 8 min read