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AI Agent Harness Patterns: Beyond LLMs to Production Systems

Building a production-ready AI agent requires more than just connecting a large language model (LLM) to tools; it necessitates a robust 'harness' surrounding the LLM. This harness includes crucial components like context assembly, tiered memory systems, permissioning, and sub-agent management. The article outlines 12 patterns for constructing such harnesses, emphasizing that these patterns are applicable beyond coding agents to areas like sales copilots and retrieval agents. Key patterns include using persistent instruction files (like AGENTS.md) treated as code, implementing scoped context assembly for monorepos, and employing tiered memory (hot, warm, cold) to manage information effectively. AI

IMPACT Provides architectural patterns for building more reliable and scalable AI agents, moving beyond simple LLM integrations to production-ready systems.

RANK_REASON The item discusses patterns and best practices for building AI agents, which is an analytical and opinion-based piece rather than a direct release or research finding.

Read on dev.to — MCP tag →

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AI Agent Harness Patterns: Beyond LLMs to Production Systems

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  1. dev.to — MCP tag TIER_1 English(EN) · Akash Thakur ·

    12 Agentic Harness Patterns

    <h2> Building an AI agent is easy. Keeping one alive for six months is not. </h2> <p>You can wire up an LLM and a tool in an afternoon. What's hard — what actually separates a demo from a production system — is an agent that runs for hours, touches dozens of tools, survives a res…