Glossary · term171 of 202
SEP-2575
The MCP specification enhancement proposal that made servers stateless by default, forbidding them from remembering anything a client sent in a prior request.
also written as stateless mcp sep
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 termMcpAgentCloudflare's earlier stateful primitive for building MCP servers, backed by a Durable Object, now deprecated and feature-frozen in favor of session-free serving.view termSEP-2567The MCP proposal to remove sessions entirely and replace them with explicit state handles that a tool mints and the model passes back as an argument.view termbreak-even call countThe number of requests at which two competing costs equal out, used here to show the per-request metadata cost overtakes the old one-time handshake cost almost immediately.view termresumable SSE streamA server-sent-events connection that could pick back up where it left off after dropping, retired because resuming it required the server to retain per-request state.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 termtools/callThe MCP request type a client sends to invoke a specific tool on a server, the basic unit of work the protocol's wire-cost math is measured against.view term
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- jul 2026
