The AI newsletter builders actually read.
Agent loops · Claude Code releases · MCP server drops · open-source benchmarks. Everything 3.5k+ builders need to stay sharp. Free. Every week.
No spam. No sharing your email. Unsubscribe in one click.
3.5k
readers
weekly
cadence
free
forever
What's in every issue
Agent loops & harnesses
New patterns for agentic workflows, multi-step execution, memory, and tool-use.
Claude Code & CLI updates
Latest Claude Code releases, Codex CLI, Gemini CLI — what changed, what matters.
MCP servers & open-source drops
New Model Context Protocol servers, open-source model releases and benchmark results.
Tools, pricing & ecosystem news
Pricing shifts, new APIs, product launches, and things the community is actually shipping.
Reach 3.5k+ AI builders with a sponsored issue.
Sponsor →FAQ
What topics does the explainx newsletter cover?
+
Each issue covers AI agents, Claude Code updates, MCP servers, open-source model releases, loop engineering, agentic workflows, and practical tools for builders. We focus on what's actually useful — not hype.
How often is the newsletter sent?
+
The explainx newsletter is published weekly. We cover the most important AI developments from the past 7 days so you stay current without doomscrolling.
Who is the explainx newsletter for?
+
It's written for AI builders, developers, product teams, and technical founders working with Claude Code, AI agents, MCP servers, and agentic workflows. Beginners and experts both read it.
Is the explainx newsletter free?
+
Yes. The newsletter is completely free. We cover costs through sponsorships and our premium products (courses, bootcamps, certifications).
How do I unsubscribe?
+
Every email includes a one-click unsubscribe link at the bottom. No confirmation, no dark patterns.
Where can I read past issues?
+
All past issues are published on our Substack. You can browse and read them there before subscribing.