The new paradigm for building powerful tools is to design them for AI models. Instead of complex GUIs, developers should create simple, well-documented command-line interfaces (CLIs). Agents can easily understand and chain these CLIs together, exponentially increasing their capabilities far more effectively than trying to navigate a human-centric UI.

The power of tools like Claude Code comes from giving the AI access to fundamental command-line tools (e.g., `bash`, `grep`). This allows the AI to compose novel solutions and lets product teams define new features using simple English prompts rather than hard-coded logic.

Structure AI context into three layers: a short global file for universal preferences, project-specific files for domain rules, and an indexed library of modular context files (e.g., business details) that the AI only loads when relevant, preventing context window bloat.

Create custom commands that automatically pass a curated set of context files (e.g., daily notes, project descriptions, personal workflows) to an AI agent in a single step. This dramatically speeds up delegation by eliminating repetitive manual setup and context-feeding.

While GUIs were built for humans, the terminal is more "empathetic to the machine." Coding agents are more effective using CLIs because it provides a direct, scriptable, and universal way to interact with a system's tools, leveraging vast amounts of pre-trained shell command data.

Users often fail with MCP by expecting it to handle complex workflows instead of simple tool interactions. A key mistake is connecting too many irrelevant servers, which pollutes the AI's context window with unused tool descriptions and degrades performance. Keep the toolset minimal and relevant to the task.

Simply giving an AI agent thousands of tools is counterproductive. The real value lies in an 'agentic tool execution layer' that provides just-in-time discovery and managed execution to prevent the agent from getting overwhelmed by its options.

When an AI assistant performs a task like web research, it consumes a large amount of context. Instructing it to use a sub-agent offloads this work, keeping the main chat session lean and focused by only returning the final result, dramatically conserving your context window.

To solve the problem of MCPs consuming excessive context, advanced AI clients like Cursor are implementing "dynamic tool calling." This uses a RAG-like approach to search for and load only the most relevant tools for a given user query, rather than pre-loading the entire available toolset.