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Sendmux
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sendmux-mcp-setup

Configure Sendmux MCP servers for AI agents with OAuth and bearer tokens.

31|1|Updated Jun 17, 2026
Search Tags:#MCP#OAuth#server setup#AI integration#JSON configuration#bearer tokens#Sendmux
One-click install
npx skills add https://github.com/Sendmux/skills --skill sendmux-mcp-setup
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: sendmux-mcp-setup
Source: https://github.com/Sendmux/skills/tree/main/plugins/sendmux/skills/sendmux-mcp-setup
Command: npx skills add https://github.com/Sendmux/skills --skill sendmux-mcp-setup

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill addresses the need to configure Sendmux Model Context Protocol (MCP) servers for AI agent clients, ensuring seamless connection and integration with Sendmux services.

Core Features & Use Cases

  • OAuth Configuration: Sets up OAuth for hosted MCP endpoints or local environment variables for secret-backed local config.
  • Local Server Setup: Allows running local stdio or HTTP MCP servers for various surfaces like Mailbox, Management, and Sending.
  • Bearer Tokens: Adds bearer headers for local HTTP servers and writes MCP config for various AI tools.
  • Surface Mapping: Defines tool counts and examples for Mailbox, Management, and Sending surfaces.
  • Local Servers: Provides instructions for setting up local servers for Mailbox, Management, and Sending.
  • JSON Clients: Offers JSON configuration examples for Cursor, Cline, and Windsurf/Cascade clients.
  • Claude Code: Provides setup commands for Claude Code using hosted OAuth, local stdio, and local HTTP bearer.
  • Codex: Configures Codex using config.toml for user-level setup.
  • VS Code and GitHub Copilot: Stores MCP config in .vscode/mcp.json or mcp.json and provides command-line options for adding servers.
  • Gemini CLI: Reads mcpServers from settings.json and offers local stdio, hosted remote OAuth, and local HTTP bearer configurations.
  • Verification: Instructs on how to verify the server setup and tool availability.
  • Routing: Offers guidance on routing based on different scenarios like API setup, sending body shape, mailbox operations, etc.

Quick Start

Run the sendmux-mcp command to configure Sendmux MCP servers for your agent client.

Frequently Asked Questions about sendmux-mcp-setup

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I configure Sendmux MCP servers for AI agents?▼

To configure Sendmux MCP servers for AI agents, run the `sendmux-mcp` command. This sets up OAuth for hosted endpoints, local stdio or HTTP servers, and generates JSON client configurations for various AI tools.

Does Sendmux MCP setup support OAuth and bearer tokens for local HTTP servers?▼

Yes, Sendmux MCP setup supports both OAuth for hosted endpoints and bearer tokens for local HTTP servers. It adds bearer headers automatically and writes the required MCP config for your specific AI client.

Can I use Sendmux MCP with Cursor, Cline, and Windsurf?▼

Yes, you can use Sendmux MCP with Cursor, Cline, and Windsurf. The setup provides specific JSON configuration examples for these clients, allowing seamless integration with your local or hosted MCP servers.

What AI tools and clients are compatible with Sendmux MCP configuration?▼

Sendmux MCP configuration is compatible with Cursor, Cline, Windsurf, Claude Code, Codex, VS Code, GitHub Copilot, and Gemini CLI. It provides tailored setup commands and JSON configurations for each platform.

How do I set up local stdio servers for Mailbox, Management, and Sending surfaces?▼

You can set up local stdio servers for Mailbox, Management, and Sending surfaces by following the provided local server instructions. The setup defines tool counts and examples for each specific surface mapping.

How do I verify that my Sendmux MCP server setup is working correctly?▼

To verify your Sendmux MCP server setup, follow the verification instructions provided to check server connectivity and tool availability. This ensures your AI agent can successfully route operations like API setup and mailbox operations.

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