Durable, user-keyed state management for stateless MCP servers. Enables agents to persist and resume state across conversations, clients, and devices.
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process.env. You'll be asked to provide them before it can run.MCPSTATE_MAX_STATE_BYTES— defaults to hostname), and (per-handle state cap;MCPSTATE_BACKEND— Four environment variables configure it: (backend URL, orMCPSTATE_WRITER— the OAuth subject instead), (the last_writer label;MCPSTATE_USER— backend), (identity for local/stdio; remote servers resolve[](https://m8ven.ai/mcp/varmabudharaju-mcpstate-14l6fe)