AWS MCP Server

A Python Model Context Protocol (MCP) server that lets MCP-compatible clients inspect and operate AWS through the AWS CLI. It supports command execution with validation, command suggestions, AWS region lookup, and caller identity checks.

Features

• Execute AWS CLI commands without shell expansion, preserving quoted arguments with shell-style parsing
• Suggest common AWS CLI commands from natural language requests
• Return available AWS regions
• Return the current caller identity
• Support stdio transport for local MCP clients
• Validate configuration and write logs to stderr plus a local log file

Safety Model

This server can execute AWS CLI commands using the credentials available to the process. It blocks shell operators by using subprocess.run(..., shell=False) and flags destructive-looking commands, but it cannot replace IAM least privilege or human review. Use scoped AWS profiles or roles, prefer non-production accounts for testing, and keep destructive commands on manual approval in your MCP client.

Requirements

• Python 3.12+
• AWS CLI v2 installed and available on PATH
• AWS CLI authentication configured and configuration through an AWS profile, IAM Identity Center/SSO, environment variables, an IAM role, or another AWS-supported credential provider
• MCP-compatible client such as Claude Desktop, Cursor, VS Code, or another MCP host

Installation

When published to PyPI, install or run the server like a standard Python MCP package:

uvx mdev-aws-mcp-server

For local development from source:

git clone https://github.com/musaddiq-dev/aws-cli-mcp-server.git
cd aws-cli-mcp-server
python -m venv .venv
source .venv/bin/activate
pip install -e .

Configuration

Before running this server, install the AWS CLI using the official AWS CLI install guide, then configure credentials using the official AWS CLI sign-in guide and AWS CLI configuration guide. AWS recommends short-term credentials where possible; avoid long-term IAM user keys unless your use case requires them.

Copy the example environment file and adjust values as needed.

cp .env.example .env

Variable	Description	Default
AWS_REGION	Default AWS region	us-east-1
AWS_PROFILE	AWS credentials profile	default
AWS_MCP_WORKING_DIR	Working directory for file operations	/tmp/aws-mcp-work
AWS_MCP_REQUIRE_CONFIRMATION	Emit warnings for destructive-looking operations	true
AWS_MCP_LOG_LEVEL	Application log level	INFO

Running

mdev-aws-mcp-server

From a local checkout before PyPI publication, run:

python -m aws_mcp_server.server

MCP Client Configuration

For published installs, prefer uvx. MCP servers using stdio must write protocol messages only to stdout; this server writes logs to stderr and a local file under ~/.aws-mcp-server/logs.

Claude Desktop / Cursor / Windsurf / Cline

Most MCP clients accept this mcpServers JSON shape:

{
  "mcpServers": {
    "aws": {
      "command": "uvx",
      "args": ["mdev-aws-mcp-server"],
      "env": {
        "AWS_PROFILE": "default",
        "AWS_REGION": "us-east-1"
      }
    }
  }
}

For local development from this repository, use the installed console script path instead:

{
  "mcpServers": {
    "aws": {
      "command": "/absolute/path/to/aws-cli-mcp-server/.venv/bin/mdev-aws-mcp-server",
      "args": [],
      "env": {
        "AWS_PROFILE": "default",
        "AWS_REGION": "us-east-1"
      }
    }
  }
}

Claude Code CLI

claude mcp add aws --env AWS_PROFILE=default --env AWS_REGION=us-east-1 -- uvx mdev-aws-mcp-server

VS Code MCP

VS Code uses the same command/args/env model in its MCP configuration:

{
  "servers": {
    "aws": {
      "type": "stdio",
      "command": "uvx",
      "args": ["mdev-aws-mcp-server"],
      "env": {
        "AWS_PROFILE": "default",
        "AWS_REGION": "us-east-1"
      }
    }
  }
}

Tools

Tool	Purpose	Safety
call_aws	Execute an AWS CLI command	Can modify AWS resources
suggest_aws_commands	Suggest common AWS CLI commands	Read-only
get_aws_regions	List AWS regions	Read-only
get_caller_identity	Return current AWS identity	Read-only

Development

pip install -e .
pip install -e '.[dev]'
pytest
ruff check .
ruff format .
pyright

Smoke Check

python -m py_compile src/aws_mcp_server/server.py src/aws_mcp_server/config.py src/aws_mcp_server/aws/executor.py
python -m pytest

Manual AWS check, if credentials are configured:

aws sts get-caller-identity

Distribution

This server is published through the standard Python MCP distribution path:

• PyPI package: mdev-aws-mcp-server
• MCP Registry name: io.github.musaddiq-dev/aws-cli-mcp-server
• Runtime hint: uvx
• Transport: stdio

The mcp-name marker at the top of this README is required for MCP Registry ownership verification. Users should prefer uvx mdev-aws-mcp-server in local MCP client configurations.

Security Notes

• Do not commit .env, AWS credentials, profiles, access keys, or account-specific outputs.
• Use least-privilege IAM permissions for the profile or role running this server.
• Keep call_aws on explicit manual approval in your MCP client.
• Do not expose this server over a network without adding authentication, TLS, and network controls.
• Review generated command suggestions before executing them.

License

MIT