it's basically impossible for someone to just "show you their prompt" now, because everything is about references, skills and examples I often ask my agent to look at 3 other repos I've made first, search the web for references, use other AI APIs, etc.↗

Using Claude Code: Spending your effort One of the best parts of our newest Claude models is how they respond to effort without breaking the prompt cache in Claude Code, but I’ve received a lot of questions on this from users. What is effort really and when do you use which effo…↗

we’re thinking of killing plan mode and using the shift+tab hotkey to adjust effort levels I don’t think the models need plan mode anymore, but if you’re a plan mode diehard would love to get your feedback on why↗

I asked Opus 5.5 to try a bunch of redesigns of my personal website using my MAX sub, using workflows to iterate and critique. I was really pleased with how it hit the tone I was looking for. Then I asked it to make a trailer with all of its iterations.↗

I now type "use big pictures and few words" several times a day↗

We're adding support for AGENTS.md to Claude Code. Starting today in version 2.1.277, if there is no CLAUDE.md in a folder, Claude will check for and use AGENTS.md. You can toggle this behavior in /config.↗

I talked to Sid & Robert about building Claude Code: how much things have changed, how hard it's been to keep up with model capabilities and also what we miss about software engineering before AI. youtube.com/watch?v=S-sYlF…↗

@jxnlco we do that once a year already↗

a skill people at Anthropic have been using a lot recently: ELI5 /eli5 <what you want explained> "explain like I'm someone who knows nothing about this topic, using a HTML artifact with big pictures and few words"↗

weird that there's a "make a lot of money" button and nobody's pressing it (take your SaaS, make it headless, let agents use it, charge per interaction esp for enterprises)↗

This is part of working with the EU AI Act, other labs are adding similar watermarking. It’s hard to identify AI-generated text, and this gives people better tools to do that. We’ll also be a shipping text detection API that you can use yourself.↗

The new rules of context engineering for Claude 5 models I’ve written previously about how to best [prompt the newest generation of Claude 5 models](x.com/trq212/status/2073100352921215386) and work with them iteratively to discover what you want to build. But when you send a m…↗

ideal prompting technique is: - thin prompts - thick artifacts + context - thin skills↗

Live tweeting video editing of my AIE talk. Swyx sent me 4 videos that are about 60GB, I also threw in my HTML deck. This is my starting prompt.↗

my keynote at AI Engineer World Fair: “A Field Guide to Fable” is live on YouTube! youtu.be/9fubhllmsBU?is…↗

A Field Guide to Fable: Finding Your Unknowns Working with Claude Fable 5 keeps re-teaching me an old lesson: the map is not the territory. The map, a representation of the work to be done, is my prompts and skills and context, it’s what I give Claude. The territory is where th…↗

Lots of people asked how I used Fable to edit its own launch video so I made a video about that! TLDR it wrote a lot of code & tool calls to use transcription services, ffmpeg, do colorgrading, use the figma mcp, make remotion UI and render it. I didn't touch a video editor.↗

A harness for every task: dynamic workflows in Claude Code Last week, we released [dynamic workflows](code.claude.com/docs/en/workflows) in Claude Code. Claude can now write its own [harness](code.claude.com/docs/en/glossary#agentic-harness) on the fly, custom-built for the task…↗

been asking others at Anthropic how they stay in the loop with Claude and fully understand the work being done this is one of my favorites from Suzanne:↗

the basic trick to using Claude Code for non-technical work is to put a bunch of files in a folder and tell it can write scripts + make HTML↗