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mcp/harbor
Claude Code

MCP Sidecar for Claude Code

io.github.lsequeiraa/mcp-sidecar

Cross-platform MCP server for managing long-lived background processes from any MCP client

client:Claude Code transport:stdio runtime:npm

Install MCP Sidecar in Claude Code

run in your project directory

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

claude mcp add mcp-sidecar -e SIDECAR_MAX_PROCESSES=<SIDECAR_MAX_PROCESSES> -e SIDECAR_BUFFER_SIZE=<SIDECAR_BUFFER_SIZE> -e SIDECAR_KILL_TIMEOUT=<SIDECAR_KILL_TIMEOUT> -e SIDECAR_CLEANUP_AFTER=<SIDECAR_CLEANUP_AFTER> -e SIDECAR_MAX_OUTPUT_SIZE=<SIDECAR_MAX_OUTPUT_SIZE> -e SIDECAR_ALLOWED_EXECUTABLES=<SIDECAR_ALLOWED_EXECUTABLES> -e SIDECAR_BLOCKED_PATTERNS=<SIDECAR_BLOCKED_PATTERNS> -e SIDECAR_AUDIT_LOG=<SIDECAR_AUDIT_LOG> -- npx -y mcp-sidecar

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

MCP Sidecar in other clients

MCP Sidecar MCP server