feat: add flag to disable workspace agent context sync - #28522
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Adds CODER_DISABLE_WORKSPACE_AGENT_CONTEXT_SYNC (--disable-workspace-agent-context-sync). When set, ContextAPI.PushContextState rejects agent pushes with a dRPC Unimplemented code. The agent's DRPCPusher already translates that code into ErrPushUnimplemented, which cleanly terminates its RunPush loop for the life of the connection, exactly as if coderd predated Agent API v2.10. This gives large deployments a kill switch for the context sync database write load without agent rebuilds or workspace restarts. The local agent context manager keeps running so agentsocket and MCP consumers are unaffected; only server-side persistence stops.
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kylecarbs
approved these changes
Aug 25, 2026
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Adds CODER_DISABLE_WORKSPACE_AGENT_CONTEXT_SYNC (--disable-workspace-agent-context-sync). When set, ContextAPI.PushContextState rejects agent pushes with a dRPC Unimplemented code. The agent's DRPCPusher already translates that code into ErrPushUnimplemented, which cleanly terminates its RunPush loop for the life of the connection, exactly as if coderd predated Agent API v2.10. This gives large deployments a kill switch for the context sync database write load without agent rebuilds or workspace restarts.
The local agent context manager keeps running so agentsocket and MCP consumers are unaffected; only server-side persistence stops.