com.pulsemcp/s3

com.pulsemcp/s3·v0.0.4·AWS

Quality Score

/100

MCP server for AWS S3 with fine-grained tool control and S3-compatible endpoint support.

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§00 Trust verdict · v1 advisory · method

UNVERIFIEDno verdict on file

Verdict not yet evaluated for this tool. The hybrid eval runs adversarial cases first; coverage rolls out as the corpus expands. Until a verdict is recorded, an agent should treat this tool as not-yet-cleared and fall back to its own checks. Method: hybrid eval, four-state verdict, honest limits.

§01 Install

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "s3": {
      "command": "npx",
      "args": [
        "-y",
        "s3-aws-mcp-server"
      ],
      "env": {
        "AWS_ACCESS_KEY_ID": "<your-aws_access_key_id>",
        "AWS_SECRET_ACCESS_KEY": "<your-aws_secret_access_key>",
        "AWS_REGION": "us-east-1",
        "AWS_ENDPOINT_URL": "<aws_endpoint_url>",
        "S3_FORCE_PATH_STYLE": "false",
        "S3_BUCKET": "<s3_bucket>",
        "S3_ENABLED_TOOLGROUPS": "<s3_enabled_toolgroups>",
        "S3_ENABLED_TOOLS": "<s3_enabled_tools>",
        "S3_DISABLED_TOOLS": "<s3_disabled_tools>",
        "SKIP_HEALTH_CHECKS": "false"
      }
    }
  }
}

Cursor (.cursor/mcp.json)

{
  "mcpServers": {
    "s3": {
      "command": "npx",
      "args": [
        "-y",
        "s3-aws-mcp-server"
      ],
      "env": {
        "AWS_ACCESS_KEY_ID": "<your-aws_access_key_id>",
        "AWS_SECRET_ACCESS_KEY": "<your-aws_secret_access_key>",
        "AWS_REGION": "us-east-1",
        "AWS_ENDPOINT_URL": "<aws_endpoint_url>",
        "S3_FORCE_PATH_STYLE": "false",
        "S3_BUCKET": "<s3_bucket>",
        "S3_ENABLED_TOOLGROUPS": "<s3_enabled_toolgroups>",
        "S3_ENABLED_TOOLS": "<s3_enabled_tools>",
        "S3_DISABLED_TOOLS": "<s3_disabled_tools>",
        "SKIP_HEALTH_CHECKS": "false"
      }
    }
  }
}

Cline (cline_mcp_settings.json)

npx -y s3-aws-mcp-server

§02 Environment variables

AWS_ACCESS_KEY_ID

requiredsecret

AWS access key ID for authentication.

AWS_SECRET_ACCESS_KEY

requiredsecret

AWS secret access key for authentication.

AWS_REGION

AWS region for S3 operations.

AWS_ENDPOINT_URL

Custom S3 endpoint URL for MinIO or S3-compatible services.

S3_FORCE_PATH_STYLE

Use path-style addressing instead of virtual-hosted-style.

S3_BUCKET

Constrain all operations to a single bucket.

S3_ENABLED_TOOLGROUPS

Comma-separated tool groups: readonly or readwrite.

S3_ENABLED_TOOLS

Whitelist specific tools by name.

S3_DISABLED_TOOLS

Blacklist specific tools by name.

SKIP_HEALTH_CHECKS

Skip AWS credential validation health checks at startup.

§03 MCP Quality Score · methodology

freshness

completeness

installability

documentation

stability

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