Bash MCP Server

Sophisticated bash command MCP server that runs and manages shell execution.

Local serverstdio

What is the Bash MCP server?

Connect Bash to Claude, Cursor or any other MCP client and it stops being a tab you switch to. Sophisticated bash command MCP server that runs and manages shell execution. The bash mcp server is what makes that connection.

What the server does

A highly sophisticated Bash MCP server for safe, structured command execution with first-class background job orchestration.

  • High-fidelity shell execution with clear exit-code semantics
  • Advanced background process lifecycle controls (run_background, wait_background, kill_background)
  • Built-in observability via per-process stdout/stderr log files
  • OpenTelemetry traces and metrics for production visibility
  • Agent-friendly ergonomics with cwd and env overrides for precise execution context

Available tools

The toolset is worth reading before you wire it up, because it tells you what the integration is really for:

  • High — fidelity shell execution with clear exit-code semantics
  • Built — in observability via per-process stdout/stderr log files
  • Agent — friendly ergonomics with cwd and env overrides for precise execution context
  • run — run command in foreground
  • run_background — start command in background with stdout/stderr written to log files
  • list_background — list tracked background processes, including log file paths
  • kill_background — stop tracked background process by pid
  • tail_background — show last N lines from background process logs
  • wait_background — wait for background process completion and return final status/output

Installation

bash-command-mcp on npm is all you need. Most clients run it directly, so configuration is a few lines and a restart.

Credentials and setup notes

Configuration is passed through the environment: BASH_COMMAND_MCP_HOST. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.

Where it fits

Among the monitoring and observability options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Bash's toolset — High, Built, Agent and 6 more — is a fair guide to whether it matches your workflow. It is maintained by mrorigo; worth a glance at recent repository activity before you build anything load-bearing on it.

SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.

Worth knowing first

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • With 9 tools registered it takes up a noticeable share of the context window; turn it off in projects that never touch Bash.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Available tools

ToolWhat it does
Highfidelity shell execution with clear exit-code semantics.
Builtin observability via per-process stdout/stderr log files.
Agentfriendly ergonomics with cwd and env overrides for precise execution context.
runrun command in foreground.
run_backgroundstart command in background with stdout/stderr written to log files.
list_backgroundlist tracked background processes, including log file paths.
kill_backgroundstop tracked background process by pid.
tail_backgroundshow last N lines from background process logs.
wait_backgroundwait for background process completion and return final status/output.

How to install the Bash MCP server

{
  "mcpServers": {
    "bash-command": {
      "command": "npx",
      "args": ["-y", "bash-command-mcp"],
      "env": {
        "BASH_COMMAND_MCP_HOST": "your-value"
      }
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

VariableDescriptionRequired
BASH_COMMAND_MCP_HOSTEndpoint or connection string the server talks to.Optional

Example prompts to try

  • Use Bash to High.
  • Use Bash to Built.
  • Use Bash to Agent.

Frequently asked questions

It connects Bash to MCP-compatible AI assistants such as Claude and Cursor, exposing 9 tools (High, Built, Agent, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Bash directly.