MCP Sidecar

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

What does this entry provide?

MCP Sidecar is an MCP server entry in ChatHome Skills, sourced from Official MCP Registry and scored 67/100. As a Model Context Protocol server, it exposes tools that MCP-compatible LLM clients such as Claude, Cursor, and Copilot can call directly, extending an agent's reach beyond its built-in capabilities. ChatHome Skills discovered this entry through its daily ingest of official registries and GitHub discovery queries, and re-verifies repository facts, freshness signals, and install metadata on every run. The quality score weighs official-registry presence, a working install command, license clarity, GitHub star trajectory, and repository freshness — the full formula is on the Sources page. The install command above is ready to copy. Review the last-pushed date and repository status before adding MCP Sidecar to a production agent workflow; the snapshot facts below are point-in-time values from the most recent ingest.

Snapshot facts

Source: Official MCP Registry
Quality: 67/100
Install method: npm
Repo: lsequeiraa/mcp-sidecar
Repo updated: Jun 2, 2026

Install command

npx -y mcp-sidecar@0.3.2

Install method: npm

Review the upstream source before running this command.

GitHub project

Quality

Repo stars

Repo updated

Jun 2, 2026

How is this score calculated?

Weighted across six dimensions, scored 0-100.
Provenance (25): listed in an official or curated registry.
Installability (25): a runnable install command beats a declared transport, which beats a source checkout.
Maintenance (20): recency of the last push; archived entries score zero here.
Adoption (20): repository stars on a log curve.
Documentation (10) and description quality (10): parsed manifest or SKILL.md frontmatter, and a real description rather than a placeholder.

MCP manifest

{
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "status": "active",
      "isLatest": true,
      "updatedAt": "2026-06-02T01:55:54.658549Z",
      "publishedAt": "2026-06-02T01:55:54.658549Z",
      "statusChangedAt": "2026-06-02T01:55:54.658549Z"
    }
  },
  "server": {
    "name": "io.github.lsequeiraa/mcp-sidecar",
    "title": "MCP Sidecar",
    "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
    "version": "0.3.2",
    "packages": [
      {
        "version": "0.3.2",
        "transport": {
          "type": "stdio"
        },
        "identifier": "mcp-sidecar",
        "registryType": "npm",
        "environmentVariables": [
          {
            "name": "SIDECAR_MAX_PROCESSES",
            "format": "string",
            "description": "Maximum number of concurrent managed processes (default: 10)"
          },
          {
            "name": "SIDECAR_BUFFER_SIZE",
            "format": "string",
            "description": "Output buffer size per stream in bytes (default: 1048576)"
          },
          {
            "name": "SIDECAR_KILL_TIMEOUT",
            "format": "string",
            "description": "Milliseconds to wait between graceful and forced termination (default: 5000)"
          },
          {
            "name": "SIDECAR_CLEANUP_AFTER",
            "format": "string",
            "description": "Seconds before exited processes are auto-removed. 0 disables cleanup (default: 1800)"
          },
          {
            "name": "SIDECAR_MAX_OUTPUT_SIZE",
            "format": "string",
            "description": "Global cap on bytes returned by the output tool. 0 means unlimited (default: 0)"
          },
          {
            "name": "SIDECAR_ALLOWED_EXECUTABLES",
            "format": "string",
            "description": "Comma-separated allowlist of executable names. When set, enables security mode with direct exec (no shell). Unset means security disabled."
          },
          {
            "name": "SIDECAR_BLOCKED_PATTERNS",
            "format": "string",
            "description": "Comma-separated regex patterns to reject in commands. Only applies when security is enabled."
          },
          {
            "name": "SIDECAR_AUDIT_LOG",
            "format": "string",
            "description": "Audit log destination. 'true' writes to cwd, 'temp' writes to OS temp dir, or a directory path. Unset disables audit logging."
          }
        ]
      }
    ],
    "repository": {
      "url": "https://github.com/lsequeiraa/mcp-sidecar",
      "source": "github"
    },
    "description": "Cross-platform MCP server for managing long-lived background processes from any MCP client"
  }
}

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