MCP Prompt List Changed
Industry Definition Set • Entity Resolution Path: /glossary/mcp-prompt-list-changed
Quick Answer / TL;DR
A server-to-client notification that the set of available prompt templates has changed, prompting the client to refresh its prompt list.
Key Takeaways
- Server-side dynamic prompt catalog updates.
- Client should re-query prompts/list upon receiving this notification.
- Useful for content-management-backed prompt libraries.
- Part of the standard MCP notification set.
Definitive Statement: A server-to-client notification that the set of available prompt templates has changed, prompting the client to refresh its prompt list.
Technical Context & Protocol Usage
- Detailed Explanation
- Servers may dynamically register or remove prompt templates. The `prompts/list_changed` notification tells clients to re-fetch the prompt list. This is useful for servers that load prompt definitions from a database or CMS at runtime.
Format & Payload Metadata
Format: JSON-RPC notification (no response expected)
Latency: Minimal; triggers a prompt list refresh
Real-World Implementation Use Case
A marketing MCP server adds a new campaign analysis prompt template and sends `prompts/list_changed` to update the client's prompt menu.
Cite This Page
MLA Style:
MCPserver.in Engineering. "MCP Prompt List Changed." MCPserver.in Knowledge Hub, 20 July 2026, mcpserver.in/glossary/mcp-prompt-list-changed.
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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