MCP Server MCP

MCP Sidecar

By github 👁 1 views ▲ 0 votes

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

Homepage Verified source GitHub

Install

npx -y [email protected]

Configuration Example

{
  "remotes": [],
  "packages": [
    {
      "registryType": "npm",
      "identifier": "mcp-sidecar",
      "version": "0.3.2",
      "transport": {
        "type": "stdio"
      },
      "environmentVariables": [
        {
          "description": "Maximum number of concurrent managed processes (default: 10)",
          "format": "string",
          "name": "SIDECAR_MAX_PROCESSES"
        },
        {
          "description": "Output buffer size per stream in bytes (default: 1048576)",
          "format": "string",
          "name": "SIDECAR_BUFFER_SIZE"
        },
        {
          "description": "Milliseconds to wait between graceful and forced termination (default: 5000)",
          "format": "string",
          "name": "SIDECAR_KILL_TIMEOUT"
        },
        {
          "description": "Seconds before exited processes are auto-removed. 0 disables cleanup (default: 1800)",
          "format": "string",
          "name": "SIDECAR_CLEANUP_AFTER"
        },
        {
          "description": "Global cap on bytes returned by the output tool. 0 means unlimited (default: 0)",
          "format": "string",
          "name": "SIDECAR_MAX_OUTPUT_SIZE"
        },
        {
          "description": "Comma-separated allowlist of executable names. When set, enables security mode with direct exec (no shell). Unset means security disabled.",
          "format": "string",
          "name": "SIDECAR_ALLOWED_EXECUTABLES"
        },
        {
          "description": "Comma-separated regex patterns to reject in commands. Only applies when security is enabled.",
          "format": "string",
          "name": "SIDECAR_BLOCKED_PATTERNS"
        },
        {
          "description": "Audit log destination. 'true' writes to cwd, 'temp' writes to OS temp dir, or a directory path. Unset disables audit logging.",
          "format": "string",
          "name": "SIDECAR_AUDIT_LOG"
        }
      ]
    }
  ]
}

mcp model-context-protocol npm