Model Context Protocol
An open standard, introduced by Anthropic, for connecting AI applications to external tools and data through a uniform client-server interface.
The Model Context Protocol (MCP) is an open standard for wiring AI applications to the tools and data they need. It defines a common way for a host application to talk to servers that expose capabilities, so that any compliant client can use any compliant server without custom glue. The protocol was introduced by Anthropic and is openly specified, with implementations across a range of clients and servers.
An MCP server can offer three kinds of things: tools (actions the model can invoke, such as calling an API or running a query), resources (data the model can read), and prompts (reusable templates). The agent connects to the server, lists what it offers, and then calls the tools it needs. Because the interface is uniform, adding a new capability to an agent becomes a matter of connecting another server rather than writing bespoke integration code.
Proxygate runs as an MCP server, so an MCP-compatible client such as Claude, Claude Code, or Cursor can connect and gain marketplace actions as tools: search the catalog, inspect an endpoint, check a balance, and make a paid API call. In this way the protocol is the transport that turns an entire API marketplace into a set of tools an agent can use directly.
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Related concepts
Model Context Protocol: frequently asked questions
The Model Context Protocol (MCP) is an open standard, introduced by Anthropic, for connecting AI applications to external tools and data through a uniform client-server interface, so any compliant client can use any compliant server.
An MCP server can expose tools (actions the model can invoke), resources (data it can read), and prompts (reusable templates). The agent lists what a server offers and then calls the tools it needs.
Proxygate runs as an MCP server, so a compatible client can connect and use marketplace actions as tools: searching the catalog, inspecting endpoints, checking a balance, and making paid API calls.