MCP Prompt Argument
Industry Definition Set • Entity Resolution Path: /glossary/mcp-prompt-argument
Quick Answer / TL;DR
A named parameter that a client must provide when invoking an MCP prompt template.
Key Takeaways
- Named parameters for MCP prompt templates.
- Can be required or optional.
- Filled in by the client when calling `prompts/get`.
- Enables dynamic prompt customization.
Definitive Statement: A named parameter that a client must provide when invoking an MCP prompt template.
Technical Context & Protocol Usage
- Detailed Explanation
- Prompt templates can declare required and optional arguments. When a client calls `prompts/get`, it must provide values for any required arguments. The server then fills these into the template to produce the final prompt. This allows prompts to be dynamically customized for specific contexts.
Format & Payload Metadata
Format: JSON Schema for argument validation
Latency: Template rendering is instant
Real-World Implementation Use Case
A `code_review` prompt template requires a `language` argument; the client provides `TypeScript` to customize the review instructions.
Cite This Page
MLA Style:
MCPserver.in Engineering. "MCP Prompt Argument." MCPserver.in Knowledge Hub, 20 July 2026, mcpserver.in/glossary/mcp-prompt-argument.
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.
Deploy Secure MCP Clusters
Run remote SSE Model Context Protocol servers in highly secure, fully-managed environment located inside India (Mumbai/Bengaluru).
Deploy Node Now