SendGrid Secure MCP

A security-first MCP server for the SendGrid v3 API that implements dry-run defaults, recipient allowlists, rate caps, and audit logging to prevent malicious email actions like silent BCC injection.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by Choppaaahh

Vendor documentation

What you can do with it

Preview email payloads before sending
Send emails with recipient allowlists
Audit email sending actions
Prevent silent BCC injection

Source and maintenance

Community listingRegistry 0.1.0

mcp-registry: io.github.Choppaaahh/sendgrid-mcp-secure@0.1.0 Source repository

Maintenance checked: Nov 1, 2026, 6:06 AM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

sendgrid-mcp-secure 0.1.0

pypi

sendgrid-mcp-secure package definition

{
  "version": "0.1.0",
  "transport": "stdio",
  "identifier": "sendgrid-mcp-secure",
  "registryType": "pypi",
  "environmentVariables": [
    {
      "name": "SENDGRID_API_KEY",
      "format": "string",
      "isRequired": true,
      "description": "SendGrid API key (use a restricted key with Mail Send scope only)"
    },
    {
      "name": "SENDGRID_MCP_MODE",
      "format": "string",
      "description": "dry-run (default) or live"
    },
    {
      "name": "SENDGRID_MCP_RECIPIENT_ALLOWLIST",
      "format": "string",
      "description": "Comma-separated recipient addresses/domains allowed to receive mail"
    },
    {
      "name": "SENDGRID_MCP_WRITES_PER_HOUR",
      "format": "number",
      "description": "Hourly cap on write operations (sends)"
    },
    {
      "name": "SENDGRID_MCP_MAX_RECIPIENTS",
      "format": "number",
      "description": "Max recipients per send"
    },
    {
      "name": "SENDGRID_MCP_AUDIT_LOG",
      "format": "string",
      "description": "Path to the append-only audit log"
    },
    {
      "name": "SENDGRID_MCP_ALLOW_BCC",
      "format": "boolean",
      "description": "BCC stays disabled unless explicitly enabled"
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

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Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "sendgrid-secure-mcp": {
      "command": "uvx",
      "args": [
        "sendgrid-mcp-secure==0.1.0"
      ],
      "env": {
        "SENDGRID_API_KEY": "<YOUR_SENDGRID_API_KEY>",
        "SENDGRID_MCP_MODE": "<YOUR_SENDGRID_MCP_MODE>",
        "SENDGRID_MCP_RECIPIENT_ALLOWLIST": "<YOUR_SENDGRID_MCP_RECIPIENT_ALLOWLIST>",
        "SENDGRID_MCP_WRITES_PER_HOUR": "<YOUR_SENDGRID_MCP_WRITES_PER_HOUR>",
        "SENDGRID_MCP_MAX_RECIPIENTS": "<YOUR_SENDGRID_MCP_MAX_RECIPIENTS>",
        "SENDGRID_MCP_AUDIT_LOG": "<YOUR_SENDGRID_MCP_AUDIT_LOG>",
        "SENDGRID_MCP_ALLOW_BCC": "<YOUR_SENDGRID_MCP_ALLOW_BCC>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "sendgrid-secure-mcp": {
      "command": "uvx",
      "args": [
        "sendgrid-mcp-secure==0.1.0"
      ],
      "env": {
        "SENDGRID_API_KEY": "<YOUR_SENDGRID_API_KEY>",
        "SENDGRID_MCP_MODE": "<YOUR_SENDGRID_MCP_MODE>",
        "SENDGRID_MCP_RECIPIENT_ALLOWLIST": "<YOUR_SENDGRID_MCP_RECIPIENT_ALLOWLIST>",
        "SENDGRID_MCP_WRITES_PER_HOUR": "<YOUR_SENDGRID_MCP_WRITES_PER_HOUR>",
        "SENDGRID_MCP_MAX_RECIPIENTS": "<YOUR_SENDGRID_MCP_MAX_RECIPIENTS>",
        "SENDGRID_MCP_AUDIT_LOG": "<YOUR_SENDGRID_MCP_AUDIT_LOG>",
        "SENDGRID_MCP_ALLOW_BCC": "<YOUR_SENDGRID_MCP_ALLOW_BCC>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "sendgrid-secure-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "sendgrid-mcp-secure==0.1.0"
      ],
      "env": {
        "SENDGRID_API_KEY": "<YOUR_SENDGRID_API_KEY>",
        "SENDGRID_MCP_MODE": "<YOUR_SENDGRID_MCP_MODE>",
        "SENDGRID_MCP_RECIPIENT_ALLOWLIST": "<YOUR_SENDGRID_MCP_RECIPIENT_ALLOWLIST>",
        "SENDGRID_MCP_WRITES_PER_HOUR": "<YOUR_SENDGRID_MCP_WRITES_PER_HOUR>",
        "SENDGRID_MCP_MAX_RECIPIENTS": "<YOUR_SENDGRID_MCP_MAX_RECIPIENTS>",
        "SENDGRID_MCP_AUDIT_LOG": "<YOUR_SENDGRID_MCP_AUDIT_LOG>",
        "SENDGRID_MCP_ALLOW_BCC": "<YOUR_SENDGRID_MCP_ALLOW_BCC>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "sendgrid-secure-mcp": {
      "command": "uvx",
      "args": [
        "sendgrid-mcp-secure==0.1.0"
      ],
      "env": {
        "SENDGRID_API_KEY": "<YOUR_SENDGRID_API_KEY>",
        "SENDGRID_MCP_MODE": "<YOUR_SENDGRID_MCP_MODE>",
        "SENDGRID_MCP_RECIPIENT_ALLOWLIST": "<YOUR_SENDGRID_MCP_RECIPIENT_ALLOWLIST>",
        "SENDGRID_MCP_WRITES_PER_HOUR": "<YOUR_SENDGRID_MCP_WRITES_PER_HOUR>",
        "SENDGRID_MCP_MAX_RECIPIENTS": "<YOUR_SENDGRID_MCP_MAX_RECIPIENTS>",
        "SENDGRID_MCP_AUDIT_LOG": "<YOUR_SENDGRID_MCP_AUDIT_LOG>",
        "SENDGRID_MCP_ALLOW_BCC": "<YOUR_SENDGRID_MCP_ALLOW_BCC>"
      }
    }
  }
}

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