Teams strip 80% of Claude Code’s system prompt in a new context-engineering guide
EricBuess · x · 2026-07-25
Claude Code prompt engineering gets leaner as teams strip away most of the system prompt
A post summarizing an article on the new rules of context engineering for Claude 5 models says one team removed about 80% of the Claude Code system prompt for its newest models.
The takeaway is not just “use a shorter prompt,” but that skills, Claude.md files, and iterative discovery matter more than stuffing instructions into the system prompt. The article frames this as a practical shift in how developers should structure context for newer Claude models when building agentic workflows.
Related event: Anthropic Slashes Claude Code System Prompts by Over 80%(11 posts)→
More from coding & agent
- 'My intelligence stack': developer splits AI coding work across Opus 5.5, Fable and Astra with human review gates — sh_reya · 2026-10-27
- Baseten webinar: evaluate open models for coding agents by benchmarking on your own merged PRs — baseten · 2026-10-27
- Thorsten Ball on working with agents: run more evals, automate everything, use the best models — omarsar0 · 2026-10-27
- DeepMind paper: LLMs can't sample randomly on their own — pass random numbers from code instead — rohanpaul_ai · 2026-10-27
- BELL: Open-Source Stack Combines Browserbase, Eve, iMessage and Stripe Link for Personal Agents — jeff_weinstein · 2026-10-27
- Legora runs 2,000 parallel agent evals on Modal Sandboxes for legal AI — blelbach · 2026-10-27