What Actually Is Claude Code’s Plan Mode?

kept by eddie dec 18, 25

Claude Code's plan mode is a thin prompt overlay and read-only guard, not a fundamentally different execution path.

A Year Of Vibes
Armin Ronacher reflects on 2025 as a year of agentic coding tools like Claude Code, which replaced much of his direct programming, and discusses the cultural, technical, and social challenges this shift presents for software engineering.
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When does MCP make sense vs CLI?
The Hacker News discussion weighs the trade-offs between MCP and CLI for AI agent tool calling, finding that each has valid use cases depending on context.
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The 80% Problem in Agentic Coding - by Addy Osmani
Addy Osmani argues that while AI agents now write 80% of code for early adopters, this shifts problems to "comprehension debt," where developers understand less of their own codebases.
also on Armin Ronacher, Claude Code, #ai-coding, #developer-tools
Changes in the system prompt between Claude Opus 4.6 and 4.7
Opus 4.7's system prompt adds child safety tags, a tool-search mechanism, anti-verbosity instructions, and drops the Trump presidency clarification from the 4.6 prompt.
also on #prompt-engineering, Claude Code, Anthropic, #user-experience, #developer-tools
AddyOsmani.com - How to write a good spec for AI agents
Writing effective AI agent specs requires a high-level vision, structured PRD-like format, modular task breakdowns, and built-in guardrails to keep agents focused and productive.
also on #prompt-engineering, Claude Code, Anthropic, #ai-coding, #developer-tools