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MCP server APIs

Introduced 3.0

This is an experimental feature and is not recommended for use in a production environment. For updates on the progress of the feature or if you want to leave feedback, join the discussion on the OpenSearch forum.

Model Context Protocol (MCP) is a protocol that defines how an agent can discover and execute tools. The MCP server allows external agents to connect to and use tools available in OpenSearch. For a list of supported tools, see Tools.

The default HTTP transport method does not support streaming. You must install the transport-reactor-netty4 HTTP transport plugin and use it as the default HTTP transport layer. Both the transport-reactor-netty4 plugin and the MCP server feature are experimental.

ML Commons supports the following MCP APIs:

• Register MCP tools
• Update MCP tools
• List MCP tools
• Remove MCP tools
• MCP SSE session
• MCP SSE message