Archive - The Prompt Engineering Substack

May 2025

Everything you need to know from Anthropic's latest release

Opus 4, Sonnet 4, prompt engineering guidance, new API features (hello direct integration for MCP), and more

May 23 •

5 MCP security vulnerabilities you should know

Because the “USB-C for AI apps” shouldn’t also be a back-door for attackers

May 16 •

What 500,000 Claude sessions reveal about AI’s affect on software development

Plus why I'm optimistic for developers!

May 9 •

Google's new prompt engineering guide

Here's what you need to know

May 2 •

April 2025

March 2025

PromptLab 2025 Recap

Access the recordings

Mar 21 •

OpenAI's Agents SDK and Responses API

Agents just got a whole lot easier to build

Mar 17 •

#nojs-banner { position: fixed; bottom: 0; left: 0; padding: 16px 16px 16px 32px; width: 100%; box-sizing: border-box; background: red; color: white; font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"; font-size: 13px; line-height: 13px; } #nojs-banner a { color: inherit; text-decoration: underline; } This site requires JavaScript to run correctly. Please turn on JavaScript or unblock scripts