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SendGrid MCP Integration for Claude Agent SDK

Connect SendGrid to Claude Agent SDK through the local KosmoKrator MCP gateway with scoped tools, credentials, and write policy.

7 functions 6 read 1 write API key auth
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Connect SendGrid to Claude Agent SDK

Give Claude Agent SDK workflows access to KosmoKrator integrations through a local MCP server.

Add a KosmoKrator stdio MCP server to the Claude Agent SDK options. The gateway is local, scoped to this integration, and starts with --write=deny so Claude Agent SDK can inspect read-capable tools without receiving write access by default.

SendGrid MCP Config for Claude Agent SDK

Use a narrow integration list so the agent does not load unrelated tools.

{
  "mcpServers": {
    "kosmokrator-sendgrid": {
      "type": "stdio",
      "command": "kosmo",
      "args": [
        "mcp:serve",
        "--integration=sendgrid",
        "--write=deny"
      ]
    }
  }
}

Run the Gateway Manually

kosmokrator mcp:serve --integration=sendgrid --write=deny

Why Use KosmoKrator Here

Scoped tools

Expose only SendGrid instead of a broad multi-service tool list.

Local credentials

Reuse credentials already configured for the KosmoKrator CLI and Lua runtime.

Write policy

Start read-only, then opt into ask or allow for trusted workspaces.

SendGrid Tools Visible to Claude Agent SDK

Claude Agent SDK sees stable MCP tool names generated from the SendGrid integration catalog.

MCP toolSource functionTypeDescription
integration__sendgrid__sendgrid_list_contacts sendgrid.sendgrid_list_contacts Read List contacts in your SendGrid marketing contacts database. Supports pagination.
integration__sendgrid__sendgrid_send_email sendgrid.sendgrid_send_email Write Send an email via SendGrid. Specify sender, recipients, subject, and HTML or text content.
integration__sendgrid__sendgrid_get_contact sendgrid.sendgrid_get_contact Read Get details of a specific contact in SendGrid by their contact ID. Returns email, custom fields, and list memberships.
integration__sendgrid__sendgrid_get_current_user sendgrid.sendgrid_get_current_user Read Get the profile of the currently authenticated SendGrid user, including email, first name, and last name.
integration__sendgrid__sendgrid_get_template sendgrid.sendgrid_get_template Read Get details of a specific email template in SendGrid by its ID. Returns template name, versions, and active version content.
integration__sendgrid__sendgrid_list_emails sendgrid.sendgrid_list_emails Read List emails in your SendGrid account. Supports filtering by query and pagination.
integration__sendgrid__sendgrid_list_templates sendgrid.sendgrid_list_templates Read List email templates in your SendGrid account. Supports pagination.

Related SendGrid Pages

SendGrid CLIUse direct JSON commands instead of MCP discovery. SendGrid MCPFull gateway reference and MCP tool names. KosmoKrator for Claude Agent SDKClient-level gateway setup.