Glossary · term180 of 202
state handle
An 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.
also written as state handles
Related terms
Durable ObjectA Cloudflare Workers primitive that gives a single instance of code its own persistent storage and guaranteed single-threaded execution, used to hold state a stateless server can't.view termMcp-Session-Id headerAn HTTP header MCP servers once used to track which open session a request belonged to, removed when the protocol dropped stateful sessions.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 termSEP-2575The MCP specification enhancement proposal that made servers stateless by default, forbidding them from remembering anything a client sent in a prior request.view termclaude --continueA CLI flag, shortened to -c, that reopens the most recent session in the current directory instead of starting a new one.view termclaude --resumeA CLI flag, shortened to -r, that opens a picker across every past session so an earlier conversation can be reopened by choice rather than by default.view termtasks primitiveA poll-based mechanism in MCP for durable work, letting a client fetch results after a dropped connection instead of resuming a live stream. It replaced resumable SSE streams as the way to survive a failure.view term
At a glance
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- first used
- jul 2026
