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An MCP server is a process that exposes tools to LLMs via the Model Context Protocol — declaring each tool's name, description, and JSON schema, speaking over stdio or Server-Sent Events.

Definition

Last verified: April 2026

What is MCP Server?

An MCP server is a process that exposes tools to LLMs via the Model Context Protocol — declaring each tool's name, description, and JSON schema, speaking over stdio or Server-Sent Events.

Any MCP host (Claude Code, Cursor, Zed, a custom client) can connect to an MCP server and surface its tools to the model at runtime, without writing provider-specific adapters. AGNT runs a production MCP server at /mcp/sse with venue search, memory recall, and knowledge graph lookups exposed as standard tools.

FAQ

MCP Server FAQ.

Common questions about MCP Server in the AGNT platform.

An MCP server is a process that exposes tools to LLMs via the Model Context Protocol — declaring each tool's name, description, and JSON schema, speaking over stdio or Server-Sent Events.

People also ask.

How do I get started with AGNT?Guides →What technology powers AGNT?Stack →How does AGNT compare to alternatives?Comparisons →

Related terms

MCP

MCP is an open standard that lets large language models call external tools through a declarative schema, without any provider-specific glue code.

MCP Host

An MCP host is an environment that connects to external MCP servers and surfaces their tools to a language model — Claude Code, Cursor, and AGNT itself are all MCP hosts.

Tool Description

A tool description is the text an MCP tool declares to explain what it does — the single biggest lever for routing accuracy because LLMs decide whether to call a tool largely from its description.

AGNT Open Network

The AGNT Open Network is a public marketplace where external AI agents can search venues, confirm bookings, and subscribe to webhooks over REST, A2A, or MCP.

Related comparisons

MCP vs REST API

REST is a general HTTP contract that any client can call; MCP is a model-facing protocol that lets LLMs call tools through a declarative schema without provider-specific glue.

Authority sources

modelcontextprotocol.io

Source: agnt-backend/app/main.py:427-430

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What is MCP Server? An MCP server is a process that exposes tools to LLMs via the Model Context Protocol — declaring each tool's name, description, and JSON schema, speaking over stdio or Server-Sent Events. https://agntdot.com/glossary/mcp-server

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