Prompt Recipe for Running Evals in `Claude Code`

// related

• #0001

  #0001Agents & toolsr/ClaudeAI2 days ago

  A cache miss in `Claude Code` costs 12.5x more than a hit—here are the common triggers

  70radar

  Claude CodeAnthropic's code-centric AI assistant — for terminals/IDEs

  Changing settings like /model or editing CLAUDE.md mid-session in Claude Code busts the cache, making the next turn 12.5x more expensive. Make major changes only at the start of a new session to manage costs effectively.

  • —A cache miss costs 12.5 times more than a cache hit (1.25x base price vs. 0.1x). This quickly adds up in long sessions.
  • —Adding or removing tools (mcp servers) mid-session is the worst offense, invalidating the entire cache from the tool definitions down.
  • —Editing the CLAUDE.md file invalidates the system prompt cache and the entire conversation that follows, forcing an expensive rewrite.
  • —Switching models with /model doesn't migrate the cache; it starts a fresh one. Use separate sessions for different models like Sonnet and Opus.

  Source: www.reddit.com/r/ClaudeAI/comments/1tlzqpl/cache_miss_inRead original →
• #0002

  #0002Agents & toolsGeekNews2 days ago

  `uv` is excellent, but package-management UX is still rough

  40radar

  uvPython package manager — fast installs and version management

  Speed and a single binary are strong wins. Maintenance commands remain buried under pip compatibility, so discoverability is still weak.

  • —uv combines fast installs, Python version management, and a single binary. The core value prop is already clear.
  • —Outdated packages are checked with uv pip list --outdated, but the command sits under the pip namespace, lowering discoverability.
  • —The complaint is about maintenance UX, not runtime capability. Strong tools still lose adoption when routine commands feel hidden.

  Source: news.hada.io/topic?id=29806Read original →
• #0003

  #0003Agents & toolsGeekNews2 days ago

  `pi-web`, mobile-first browser UI for `Pi coding agent`

  40radar

  pi-webOpen-source web UI — controls Pi coding agent from mobile browsers

  CLI-only coding agents are getting thin web shells for phone use. Useful for quick checks, but still early without adoption or workflow details.

  • —pi-web exposes the CLI-based Pi coding agent through a browser UI, reducing the terminal dependency for remote coding sessions.
  • —The strongest angle is mobile-first access. It fits small review, prompt, and status-check loops better than full implementation work.
  • —Signals a product gap: coding agents still need lightweight web control surfaces for phones, tablets, and always-on dev boxes.

  Source: news.hada.io/topic?id=29804Read original →