Agents
Browse all articles, tutorials, and guides about Agents
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DNS Detective: an Agent That Diagnoses Your Domain by Actually Probing It
We built an agent on DigitalOcean's Serverless Inference that debugs DNS, TLS and email problems the way an engineer does: form a hypothesis, run a real lookup, follow the evidence. It solved a null-MX mystery, an expired certificate, and a broken DNSSEC chain on camera, and one model we tried got disqualified for inventing probe results.
Email APIs With Hosted MCP Servers: Who Actually Ships One
Every email provider now claims AI-agent support, but there is a real dividing line: a hosted MCP server your agent connects to with a URL, versus a package you have to run yourself. As of August 2026 the hosted club is small. Here is the roster, what each server exposes, and how to wire one into Claude in two minutes.
We Built an On-Call Agent in Mastra: Where It Won and Where It Would Not
Most agent tutorials stop at the happy path. We built a real on-call agent on Mastra, then killed the process with SIGKILL at the exact moment it rolled back a deploy. It recovered the run. It also rolled the deploy back a second time. Here is what durable execution actually guarantees, and the code that makes it safe.
Top 5 AI Agent Frameworks in 2026
Five frameworks worth shipping production agents on, ranked against stated criteria, with the GitHub and npm numbers behind the ranking and an honest note on where each one loses.
Stop Prompting, Start Looping: Agentic Loops Explained
The best engineers stopped hand-writing prompts and started writing loops. Here is what an agentic loop actually is, the plan-build-judge pattern behind it, why the judge has to be a separate agent, and how to try it in an interactive simulator.