MCP Connection Management guides

Understanding the JSON-RPC protocol and how it's used in MCP

How MCP uses JSON-RPC 2.0 for every client-server message: request, response, and notification shapes, the per-request metadata that replaced the initialize handshake, core methods, and the real error codes.

Fixing "MCP error -32001: Request timed out" errors

Why MCP requests hit the -32001 timeout, and the real fixes: emit progress to reset the clock, raise the client's timeout, or return fast and finish work in the background.

Configuring MCP servers for multiple simultaneous connections

How MCP servers actually serve concurrent clients under the 2026-07-28 spec revision: a stateless protocol with per-request metadata, no session IDs to track, and the dual-era support production servers still need for older clients.

Comparing stdio vs. SSE vs. Streamable HTTP

How to choose an MCP transport: stdio for local subprocesses, Streamable HTTP for remote services, and why the old HTTP+SSE transport is deprecated, not a third option.

Configuring MCP transport protocols for Docker containers

Configure stdio, SSE, and StreamableHTTP transport protocols for MCP servers running in Docker containers with practical examples and troubleshooting.

Implementing connection health checks and monitoring

Implement health checks and monitoring for MCP servers to ensure reliable production deployments.

Fixing "Method not found (-32601)" JSON-RPC errors

Troubleshoot JSON-RPC method not found errors in MCP servers with detailed debugging strategies.

Fixing "MCP error -32000: Connection closed" errors

Resolve MCP error 32000 connection closed issues with platform-specific solutions and debugging steps.

Debugging message serialization errors in MCP protocol

Debug and fix MCP message serialization errors with proven troubleshooting techniques.

Configuring MCP transport protocols for Docker containers

Configure MCP servers in Docker containers with proper transport protocols and networking.