# Two Anthropic Playbooks for Production Agents: Context Engineering and Long-Running Harnesses

> Anthropic published two engineering posts that form a complete production playbook: context engineering to manage the token ecosystem across turns, and agent harnesses to prevent the four failure modes that collapse long-running agents - from one-shotting tasks to declaring premature victory.

Canonical URL: https://kravhal.kcsatish.com/insights/week-26
Edition: Article 14 · May 2026
Tags: Agents, LLMs, RAG
Reading time: 9 min read

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