Every time you let Opus 5.5 run a long task on its own, have it vibe-code a quick 𝗛𝗧𝗠𝗟 𝗱𝗮𝘀𝗵𝗯𝗼𝗮𝗿𝗱 like this first. Then give it 𝗮 𝘀𝘂𝗯𝗮𝗴𝗲𝗻𝘁 𝘁𝗵𝗮𝘁 𝗼𝗻𝗹𝘆 𝗯𝘂𝗶𝗹𝗱𝘀 𝗱𝗮𝘀𝗵𝗯𝗼𝗮𝗿𝗱𝘀: → Name it dashboard-builder, set its effort to medium, and preload…↗

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…↗

Cloud sessions are officially available and out of research preview! They let you keep Claude Code working, even when your laptop is closed. Existing subscribers get a one-time credit to try them: $100 on Pro, $250 on Max.↗

The best way to learn something is to build with it! I built Jev Explained with 4 examples that show what Jev is, how its primitives work, and how to use them in practice Clone the repo, open Claude Code or Codex, and ask it to create a new example using the existing codebase a…↗

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.↗

run fast-jev-compaction: github.com/tamaratran/fas…↗

Today we're rolling out Projects in Claude Code on desktop and web. A project is one conversation with Claude. It splits the work into threads itself, runs them as parallel cloud sessions, passes context between them, and keeps going when you leave. In beta for select users.↗

Projects now run from one conversation, starting in Claude Code. You describe what needs doing, and Claude directs parallel threads that keep working after you close your laptop. In beta today for select Pro and Max users in cloud sessions; coming to all Claude users soon.↗

We open sourced BrowserSkill, a bridge between your agent and your actual browser. most tools give the agent a blank browser. We let it borrow a tab from yours, then hand it back. > login state is already there, it just works where you're signed in > captchas and confirmation d…↗

Introducing Inspo. A design MCP server for Claude Code, Codex, and OpenCode. It searches 800+ beautiful websites and finds relevant design inspiration for your coding agent. Install → npx inspo-mcp install↗

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…↗

At Anthropic, Claude now writes 80% of our code. Engineers ship 8x more code per quarter. Side effect: Tests grew 10x. CI jobs up 25x in 6 months. Here's what helped us scale: claude.com/blog/agentic-c…↗

New in Claude Code: claude plugin eval See what value your plugin is adding, or if it needs more work. You can create test cases, run your plugin or skill against those test cases, score those runs, then run each case again without the plugin to see the differences.↗

Introducing Murmur For the last two months, 90% of the code we shipped at [Macroscope](macroscope.com) was orchestrated through an internal tool we built for ourselves. It allowed each of our engineers to direct dozens of cloud agents in parallel and dramatically increased the…↗

Your input needed: would you use this? This is an early look at how we're thinking about making Claude Code way more extensible. It's a little crazy, and very exciting. More details here: github.com/anthropics/cla…↗

[Channels Mariah]: It's tiiiiiiiiiime! Today @every is releasing Compound Writing, so now you - yes, you - can install my tendency to overthink a paragraph. I started this past winter by pulling down the Compound Engineering plugin and telling Claude (4.5 at the time, what a m…↗

PSA if you're using Claude Code within @get_bb_app: BB uses a local proxy, so Claude Desktop's “load tools when needed” setting doesn’t carry over to BB-launched sessions and Claude loads every MCP tool schema upfront. For me, that meant 167k tokens already filling the context…↗

Claude can now use your computer in the background in Claude Cowork and Claude Code. Give it something to do on your desktop and Claude clicks, types, and opens apps just like you would, while you work on something else.↗

Your AGENTS.md is holding you back [Context engineering](posthog.com/newsletter/context-engineering?utm_source=posthog-newsletter&utm_medium=post&utm_campaign=agents-md) used to focus on adding information that base models lacked: But then the models kept getting better. Now, t…↗

Starting September 14, we're permanently raising standard weekly limits in Claude Code by 25% for Pro, Max, Team, and seat-based Enterprise plans. Until then, the current 50% increase will be in place.↗

Mario (creator of Pi) thinks this video is worth watching. He's smarter than me so he's probably right. (It's about memory in code tools, and it features a crash out at how bad Claude Code's memory is)↗

Today, I’m open-sourcing /fuck-cancer, an AI skill that helps patients and caregivers navigate cancer diagnosis and treatment and advocate for themselves and their loved ones. Here’s what patients and caregivers have told me since I shared my mom’s story: “You have to be a huge…↗

I made Claude compete against itself. The smartest model does not automatically make the best agent. To prove it, I took the same Opus 4.6 model, initial prompt, and empty repo and but it inside two different coding harnesses: Claude Code vs. @FactoryAI Droid. The task: clone…↗

Introducing Skydive Today we’re launching Skydive, a platform building agents that own real work end to end across your entire company. Over the past six months, we have been building Skydive and transitioning it to a self-driving company, powered by AI agents. Agents are now…↗

I’ve been looking forward to today for 3 years Today we’re announcing Foundation - Chroma’s solution to memory Our research preview of this technology builds self-improving memory from your agent sessions. Try it out at trychroma.com/foundation↗

By default, coding agents start each session with no memory of previous ones, and nothing carries over to the rest of the team. We've been experimenting internally with ways to fix that, and it turns out Notion works really well: persistent, shared across the team, and every mem…↗

Claude Code can design now. The new /design skill (research preview) brings Claude Design's artboard workflow into the CLI and Desktop, built on artifacts. Run /design to get editable artboards for your UI — pick one, tweak it, then have Claude implement it.↗

This is the most important video I've ever made. In this, I explore the negative and positive mental health effects of AI coding, with data and expert commentary. youtu.be/iPUn1Fnfn0k↗

6 months ago: laptop open all day, typing into Claude Code, waiting. Today: I write a spec, go to the gym, and my phone only pings when an agent needs a decision. 95% of my work runs itself. Full breakdown so you can build your own 👇↗

I got 96.2% on ARC-AGI-3 with Opus 5, and 99.3% pass@2. The program is basically Claude Code + Opus 5 (high), one action command, and filesystem logs. Almost nothing ARC specific. github.com/jerber/arc-code↗