Glossary · term108 of 202
Mcp-Session-Id header
An HTTP header MCP servers once used to track which open session a request belonged to, removed when the protocol dropped stateful sessions.
also written as session id header
Related terms
MCPModel Context Protocol, an open standard that lets an AI tool connect to external data sources and services through a shared connector format instead of a custom integration per service.view terminitialize handshakeThe one-time exchange at the start of an MCP connection where a client and server negotiated protocol version and capabilities before any tool calls happened.view termstate handleAn explicit token a tool mints and hands back to the model to pass in as an argument later, replacing the implicit session concept that stateless MCP forbids servers from keeping.view term
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