Specs, guides & references
Model Context Protocol
Open standard for connecting agents to tools and data.
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AGENTS.mdOpen format for a project file that guides coding agents.
llms.txtProposed /llms.txt file so sites expose content for LLMs.
Building effective agentsAnthropic's practical guide to agent architectures and workflows.
12-Factor AgentsEngineering principles for reliable production agent systems.
Loop EngineeringPatterns, starters, and CLIs for designing loops that drive coding agents.
Harness engineeringOpenAI on building the tooling and workflows around coding agents (not just the models).