INDIVIDUAL MCP TOOL

email_client_compatibility_matrix

The support matrix for the HTML and CSS features that decide whether an email signature survives: tables, flex/grid, <style> blocks, background-image, base64 images, border-radius, letter-spacing, text-transform, web fonts, max-width, margins and image sizing.

signatureforever.comnone authenticationAvailability not checked

LIVE ENDPOINT

https://signatureforever.com/mcp

No auth detected

Connect to this endpoint to inspect the live schema for email_client_compatibility_matrix and invoke it with your own arguments.

Indexed input schema

{}

Risk classification

Potential side effects detected · medium confidence · heuristic, not a guarantee.

A tool name or description suggests sending messages.

Parent server

signatureforever.com

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.signatureforever]
url = "https://signatureforever.com/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "signatureforever": {
      "type": "http",
      "url": "https://signatureforever.com/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: signatureforever
Remote MCP URL: https://signatureforever.com/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "signatureforever": {
      "url": "https://signatureforever.com/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "signatureforever": {
      "type": "http",
      "url": "https://signatureforever.com/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "signatureforever",
  "transport": "streamable-http",
  "url": "https://signatureforever.com/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

Related tools

check_email_signature — Audit any email-signature HTML against what Gmail, Outlook 365, Outlook for Windows desktop, Apple Mail and iOS Mail actually do.
list_signature_templates — The signature layouts you can pass to create_email_signature, with what each one is good for and its width in pixels.
create_email_signature — Build ready-to-paste email-signature HTML from a person's details.
get_pricing — What each SignatureForever plan includes and costs, and the link to buy.