Dev Tools · 1h ago
MCP Agents Demystified: What Makes an LLM an Agent
An LLM alone only generates text; an agent adds a loop that lets it call tools like APIs or databases. The author splits the concept into an agent definition (template with limits and policies) and an agent instance (running with goals and credentials). MCP standardizes tool discovery, so agents can connect to any MCP server without custom code.
Meridian48 take
The definition/instance split is a useful mental model for building safe agents, but the real challenge is enforcing tool policies and termination limits in production.
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MCP Agents, Explained: What Actually Makes an LLM an "Agent" →
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