Prompt Engineering
Industry Definition Set • Entity Resolution Path: /glossary/prompt-engineering
Quick Answer / TL;DR
The practice of designing and optimizing prompts to elicit desired behaviors from LLMs, including tool selection, output format, and reasoning quality.
Key Takeaways
- Crafting prompts to guide LLM behavior.
- Critical for reliable tool selection and argument formatting in MCP.
- Can be standardized via MCP prompt templates.
- Iterative process involving testing and refinement.
Definitive Statement: The practice of designing and optimizing prompts to elicit desired behaviors from LLMs, including tool selection, output format, and reasoning quality.
Technical Context & Protocol Usage
- Detailed Explanation
- Prompt engineering involves crafting system prompts, few-shot examples, and instructions to guide model behavior. In MCP, good prompt engineering helps the model select the right tools, format arguments correctly, and handle edge cases. MCP servers can export prompt templates to standardize this across clients.
Format & Payload Metadata
Format: Natural language instructions, few-shot examples, system prompts
Latency: No overhead; affects token usage and model behavior
Real-World Implementation Use Case
An MCP server exports a `code-reviewer` prompt template that instructs the model to use specific analysis tools in a particular order.
Cite This Page
MLA Style:
MCPserver.in Engineering. "Prompt Engineering." MCPserver.in Knowledge Hub, 20 July 2026, mcpserver.in/glossary/prompt-engineering.
Related Terms
Model Context Protocol (MCP)
An open, secure protocol that standardizes how artificial intelligence agents and large language models (LLMs) exchange context, tools, prompts, and data resources with external servers.
JSON-RPC 2.0
A lightweight, stateless remote procedure call (RPC) protocol defined in JSON that utilizes request, response, and notification message frames.
Stdio Transport (Standard Input/Output)
A local-only transport mechanism where the AI client spawns the MCP server as a child process and communicates via standard input (stdin) and standard output (stdout) channels.
SSE Transport (Server-Sent Events)
A lightweight, unidirectional HTTP-based streaming protocol used by remote MCP servers to push messages to AI clients, with client-to-server writes sent over standard POST requests.
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