Hacker News with Generative AI: Claude

Highlights from the Claude 4 system prompt (simonwillison.net)
Anthropic publish most of the system prompts for their chat models as part of their release notes. They recently shared the new prompts for both Claude Opus 4 and Claude Sonnet 4. I enjoyed digging through the prompts, since they act as a sort of unofficial manual for how best to use these tools. Here are my highlights, including a dive into the leaked tool prompts that Anthropic didn’t publish themselves.

AI, Chatbots, Anthropic, Claude

309 points by Anon84 32 days ago | 90 comments

Claude 4 System Card (simonwillison.net)
Anthropic's system cards are always worth a look, and this one for the new Opus 4 and Sonnet 4 has some particularly spicy notes. It's also 120 pages long - nearly three times the length of the system card for Claude 3.7 Sonnet!

AI, Anthropic, Claude, System Cards

700 points by pvg 34 days ago | 251 comments

Trading with Claude, and writing your own MCP server (dangelov.com)
Ever wanted to check on your portfolio and trade some stocks directly with Claude? Well you’re in luck.

AI, Finance, Programming, Claude

180 points by dangelov 36 days ago | 82 comments

Janito – A Claude-powered CLI assistant for developers (github.com/joaompinto)

Claude, Developer Tools, AI Assistants

29 points by joaompinto 96 days ago | 5 comments

Another late-night Claude Code post (twitter.com)
Something went wrong, but don’t fret — let’s give it another shot.

Claude, Social Media, Late Night, Programming, Twitter

42 points by tosh 110 days ago | 26 comments

Yes, Claude Code can decompile itself. Here's the source code (ghuntley.com)
I'm not going to bury the lede, so let's dig right into the real reason why you clicked on this post, show you how it's done and what is possible.

Claude, Source Code, Programming, Decompilation, Artificial Intelligence

187 points by ghuntley 118 days ago | 117 comments

In 36h, I built a neutron-producing nuclear fusor in my kitchen using Claude (twitter.com)

Nuclear Fusion, DIY Projects, AI, Claude

6 points by Luc 160 days ago | 0 comments

Claude 3.5 Haiku is now available (twitter.com)

Claude, AI, Generative AI, New Releases, Poetry

10 points by wut42 235 days ago | 0 comments

Getting Claude Computer Use agent to spin up another agent in its VM (twitter.com)

Claude, Artificial Intelligence, Language Models, Computer Science, Programming

4 points by benocodes 245 days ago | 0 comments

Everything I built with Claude Artifacts this week (simonwillison.net)
I’m a huge fan of Claude’s Artifacts feature, which lets you prompt Claude to create an interactive Single Page App (using HTML, CSS and JavaScript) and then view the result directly in the Claude interface, iterating on it further with the bot and then, if you like, copying out the resulting code.

Generative AI, Claude, Web Development

637 points by recvonline 247 days ago | 465 comments

Initial explorations of Anthropic's new Computer Use capability (simonwillison.net)
Two big announcements from Anthropic today: a new Claude 3.5 Sonnet model and a new API mode that they are calling computer use.

AI, Anthropic, Claude

9 points by dtquad 248 days ago | 1 comments

Show HN: Claude Memory – Long-term memory for Claude (github.com/deshraj)

Show HN, Claude, Generative AI, Memory

76 points by deshraj 295 days ago | 23 comments

Ask HN: Did Claude Sonnet 3.5 suddenly became worse for you today? (ycombinator.com)

AI, Claude, User Experience

25 points by rvnx 308 days ago | 9 comments

Claude for Mac: The unofficial desktop app for Anthropic Claude (github.com/tullytim)

Claude, Anthropic, MacOS, Desktop Apps, Software

8 points by gk1 317 days ago | 1 comments

Show HN: Open-source CLI coding framework using Claude (github.com/vysakh0)

Open-Source, CLI, Programming, Generative AI, Claude

84 points by vysakh0 350 days ago | 21 comments

Claude is unavailable for some users. Web and Mobile. (anthropic.com)

Claude, AI, Software

28 points by cetinsert 388 days ago | 35 comments