Qubrics SDK

Name: Qubrics SDK
Author: qubrics

sendmux-core · by qubrics

Official monorepo of SDKs, CLI, and MCP servers for Sendmux email APIs across TypeScript, Python, Go, PHP, Rust, and Ruby.

56 GitHub PyPI

No known CVEs

MIT license

Actively maintained

Last commit 2d ago

Works with most clients

Transport: stdio, sse, http

0 tools

Grade F

MCPpedia last refreshed this data 1d ago

Edit this pageView history

Qubrics SDK is an MCP server that official monorepo of SDKs, CLI, and MCP servers for Sendmux email APIs across TypeScript, Python, Go, PHP, Rust, and Ruby. Its tool list has not been published yet over stdio, sse and http, requires no API key, and scores 61/100 on MCPpedia's security, maintenance and efficiency rubric.

Developer Tools Communication

Step 1

Install in your client

Config is the same across clients - only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "qubrics-sdk": {
      "args": [
        "sendmux-core"
      ],
      "command": "uvx"
    }
  }
}

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[![MCPpedia Score](https://mcppedia.org/api/badge/qubrics-sdk)](https://mcppedia.org/s/qubrics-sdk)

Read me

What Qubrics SDK does

Product documentation: sendmux.ai/docs - Management API reference: sendmux.ai/docs/api/introduction - Mailbox API reference: sendmux.ai/docs/mailbox-api/introduction - Sending API reference: sendmux.ai/docs/sending-api/introduction - MCP guide: sendmux.ai/docs/ai-integrations/mcp

Test This Server

This server supports HTTP transport. Be the first to test it - help the community know if it works.

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Scored, not listed

Why this score

Five weighted categories - click any category to see the underlying evidence.

Score breakdown

61/100across 5 weighted dimensions

How we score →

0255075100

−39

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked sendmux-core against OSV.dev.

Community

Reviews

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How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is Qubrics SDK safe to use?: Qubrics SDK has no known CVEs as of the latest MCPpedia security scan. Authentication requirements were not detected automatically - check the project's documentation before connecting in a shared environment. Licensed under MIT.
How do I install Qubrics SDK?: Qubrics SDK supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What AI clients work with Qubrics SDK?: Qubrics SDK is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is Qubrics SDK actively maintained?: Qubrics SDK is actively maintained - last commit was 2 days ago. It has 56 GitHub stars.

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Community

Discussion

Start a conversation

Ask a question, share a tip, or report an issue.

Has anyone used this with Cursor?How do you handle auth?Any alternatives?

Qubrics SDKs

Official SDK, CLI, and MCP workspace for Qubrics.

The seven @qubrics/* npm packages and PyPI packages qubrics-core and qubrics-sending are published. Existing @sendmux/* releases remain available. Other Python and Ruby packages use the published names below until their separate migrations ship.

Go v4 source for qubrics.com/go/v4 awaits publication. Use published sendmux.ai/go/v3@v3.0.0.

Packages

Ecosystem	Package	Surface	API-key / hosted auth	Install	Source
npm	`@qubrics/core`	Shared TypeScript helpers	n/a	`npm install @qubrics/core`	`packages/ts/core`
npm	`@qubrics/sending`	Sending API	`smx_mbx_` or owner-approved `smx_agent_`	`npm install @qubrics/sending`	`packages/ts/sending`
npm	`@qubrics/mailbox`	Mailbox API	`smx_mbx_` or `smx_agent_`	`npm install @qubrics/mailbox`	`packages/ts/mailbox`
npm	`@qubrics/management`	Management API	`smx_root_*`	`npm install @qubrics/management`	`packages/ts/management`
npm	`@qubrics/sdk`	TypeScript umbrella package	surface-specific	`npm install @qubrics/sdk`	`packages/ts/sdk`
npm	`@qubrics/cli`	`qubrics` CLI	command/profile-specific	`npm install -g @qubrics/cli`	`packages/ts/cli`
npm	`sendmux-mcp`	stdio bridge to hosted MCP	OAuth	`npx -y sendmux-mcp`	`packages/ts/mcp`
npm	`@qubrics/ai-sdk`	Vercel AI SDK tools (agent inbox + sending)	send + receive `smx_mbx_` or `smx_agent_`	`npm install @qubrics/ai-sdk`	`packages/ts/ai-sdk`
Homebrew	`sendmux`	`sendmux` CLI	command/profile-specific	`brew install qubrics/tap/sendmux`	`qubrics/homebrew-tap`
PyPI	`qubrics-core`	Shared Python helpers	n/a	`pip install qubrics-core`	`packages/python/core`
PyPI	`qubrics-sending`	Sending API	`smx_mbx_` or owner-approved `smx_agent_`	`pip install qubrics-sending`	`packages/python/sending`
PyPI	`sendmux-mailbox`	Mailbox API	`smx_mbx_` or `smx_agent_`	`pip install sendmux-mailbox`	`packages/python/mailbox`
PyPI	`sendmux-management`	Management API	`smx_root_*`	`pip install sendmux-management`	`packages/python/management`
PyPI	`sendmux-sdk`	Python umbrella package	surface-specific	`pip install sendmux-sdk`	[`packages/python/sdk`](pack

Ecosystem

Package

Surface

API-key / hosted auth

Install

Source

npm

@qubrics/core

Shared TypeScript helpers

n/a

npm install @qubrics/core

packages/ts/core

npm

@qubrics/sending

Sending API

smx_mbx_* or owner-approved smx_agent_*

npm install @qubrics/sending

packages/ts/sending

npm

@qubrics/mailbox

Mailbox API

smx_mbx_* or smx_agent_*

npm install @qubrics/mailbox

packages/ts/mailbox

npm

@qubrics/management

Management API

smx_root_*

npm install @qubrics/management

packages/ts/management

npm

@qubrics/sdk

TypeScript umbrella package

surface-specific

npm install @qubrics/sdk

packages/ts/sdk

npm

@qubrics/cli

qubrics CLI

command/profile-specific

npm install -g @qubrics/cli

packages/ts/cli

npm

sendmux-mcp

stdio bridge to hosted MCP

OAuth

npx -y sendmux-mcp

packages/ts/mcp

npm

@qubrics/ai-sdk

Vercel AI SDK tools (agent inbox + sending)

send + receive smx_mbx_* or smx_agent_*

npm install @qubrics/ai-sdk

packages/ts/ai-sdk

Homebrew

sendmux

sendmux CLI

command/profile-specific

brew install qubrics/tap/sendmux

qubrics/homebrew-tap

PyPI

qubrics-core

Shared Python helpers

n/a

pip install qubrics-core

packages/python/core

PyPI

qubrics-sending

Sending API

smx_mbx_* or owner-approved smx_agent_*

pip install qubrics-sending

packages/python/sending

PyPI

sendmux-mailbox

Mailbox API

smx_mbx_* or smx_agent_*

pip install sendmux-mailbox

packages/python/mailbox

PyPI

sendmux-management

Management API

smx_root_*

pip install sendmux-management

packages/python/management

PyPI

sendmux-sdk

Python umbrella package

surface-specific

pip install sendmux-sdk

[packages/python/sdk](pack

Frequently Asked Questions

Is Qubrics SDK safe to use?

Qubrics SDK has no known CVEs as of the latest MCPpedia security scan. Authentication requirements were not detected automatically - check the project's documentation before connecting in a shared environment. Licensed under MIT.

How do I install Qubrics SDK?

Qubrics SDK supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What AI clients work with Qubrics SDK?

Qubrics SDK is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.

Is Qubrics SDK actively maintained?

Qubrics SDK is actively maintained - last commit was 2 days ago. It has 56 GitHub stars.

Qubrics SDKs

Official SDK, CLI, and MCP workspace for Qubrics.

Go v4 source for qubrics.com/go/v4 awaits publication. Use published sendmux.ai/go/v3@v3.0.0.

Packages

Ecosystem	Package	Surface	API-key / hosted auth	Install	Source
npm	`@qubrics/core`	Shared TypeScript helpers	n/a	`npm install @qubrics/core`	`packages/ts/core`
npm	`@qubrics/sending`	Sending API	`smx_mbx_` or owner-approved `smx_agent_`	`npm install @qubrics/sending`	`packages/ts/sending`
npm	`@qubrics/mailbox`	Mailbox API	`smx_mbx_` or `smx_agent_`	`npm install @qubrics/mailbox`	`packages/ts/mailbox`
npm	`@qubrics/management`	Management API	`smx_root_*`	`npm install @qubrics/management`	`packages/ts/management`
npm	`@qubrics/sdk`	TypeScript umbrella package	surface-specific	`npm install @qubrics/sdk`	`packages/ts/sdk`
npm	`@qubrics/cli`	`qubrics` CLI	command/profile-specific	`npm install -g @qubrics/cli`	`packages/ts/cli`
npm	`sendmux-mcp`	stdio bridge to hosted MCP	OAuth	`npx -y sendmux-mcp`	`packages/ts/mcp`
npm	`@qubrics/ai-sdk`	Vercel AI SDK tools (agent inbox + sending)	send + receive `smx_mbx_` or `smx_agent_`	`npm install @qubrics/ai-sdk`	`packages/ts/ai-sdk`
Homebrew	`sendmux`	`sendmux` CLI	command/profile-specific	`brew install qubrics/tap/sendmux`	`qubrics/homebrew-tap`
PyPI	`qubrics-core`	Shared Python helpers	n/a	`pip install qubrics-core`	`packages/python/core`
PyPI	`qubrics-sending`	Sending API	`smx_mbx_` or owner-approved `smx_agent_`	`pip install qubrics-sending`	`packages/python/sending`
PyPI	`sendmux-mailbox`	Mailbox API	`smx_mbx_` or `smx_agent_`	`pip install sendmux-mailbox`	`packages/python/mailbox`
PyPI	`sendmux-management`	Management API	`smx_root_*`	`pip install sendmux-management`	`packages/python/management`
PyPI	`sendmux-sdk`	Python umbrella package	surface-specific	`pip install sendmux-sdk`	[`packages/python/sdk`](pack

Ecosystem

Package

Surface

API-key / hosted auth

Install

Source

npm

@qubrics/core

Shared TypeScript helpers

n/a

npm install @qubrics/core

packages/ts/core

npm

@qubrics/sending

Sending API

smx_mbx_* or owner-approved smx_agent_*

npm install @qubrics/sending

packages/ts/sending

npm

@qubrics/mailbox

Mailbox API

smx_mbx_* or smx_agent_*

npm install @qubrics/mailbox

packages/ts/mailbox

npm

@qubrics/management

Management API

smx_root_*

npm install @qubrics/management

packages/ts/management

npm

@qubrics/sdk

TypeScript umbrella package

surface-specific

npm install @qubrics/sdk

packages/ts/sdk

npm

@qubrics/cli

qubrics CLI

command/profile-specific

npm install -g @qubrics/cli

packages/ts/cli

npm

sendmux-mcp

stdio bridge to hosted MCP

OAuth

npx -y sendmux-mcp

packages/ts/mcp

npm

@qubrics/ai-sdk

Vercel AI SDK tools (agent inbox + sending)

send + receive smx_mbx_* or smx_agent_*

npm install @qubrics/ai-sdk

packages/ts/ai-sdk

Homebrew

sendmux

sendmux CLI

command/profile-specific

brew install qubrics/tap/sendmux

qubrics/homebrew-tap

PyPI

qubrics-core

Shared Python helpers

n/a

pip install qubrics-core

packages/python/core

PyPI

qubrics-sending

Sending API

smx_mbx_* or owner-approved smx_agent_*

pip install qubrics-sending

packages/python/sending

PyPI

sendmux-mailbox

Mailbox API

smx_mbx_* or smx_agent_*

pip install sendmux-mailbox

packages/python/mailbox

PyPI

sendmux-management

Management API

smx_root_*

pip install sendmux-management

packages/python/management

PyPI

sendmux-sdk

Python umbrella package

surface-specific

pip install sendmux-sdk

[packages/python/sdk](pack