Claude Fable 5.1 and Claude Mythos 5.1(anthropic.com)

1332 points by denysvitali 1 month ago | 1269 comments

Anthropic documentation page describing new features, breaking changes, and capability improvements in Claude Fable 5.1 and Claude Mythos 5.1.

Prompting Claude Opus 5.5(platform.claude.com)

177 points by Michelangelo11 28 days ago | 191 comments

Anthropic's Claude Platform documentation page giving prompting guidance for Claude Opus 5.5, covering behavioral differences from Opus 5, effort calibration, thinking, and agentic tasks.

Zod 4(zod.dev)

725 points by bpierre 1 year ago | 225 comments

Release announcement page for Zod 4, the TypeScript schema validation library, describing performance improvements, new features, and upgrade instructions.

Zod v4 Beta(v4.zod.dev)

154 points by mycroft_4221 1 year ago | 34 comments

Agent Skills(agentskills.io)

508 points by mooreds 8 months ago | 244 comments

Overview page for Agent Skills, an open format of folders with instructions, scripts, and resources that AI agents can discover and load to gain capabilities.

Anthropic officially bans using subscription auth for third party use(code.claude.com)

566 points by theahura 8 months ago | 690 comments

Claude Code documentation page listing legal agreements, compliance certifications, and security information, including terms governing subscription authentication use.