Bounceprotect

io.github.fahassan00Published by GitHub account fahassan00v1.0.3Updated Oct 24, 2026

Email validation and SMTP verification for Claude Desktop, Cursor, and Claude Code.

VerifiedSTDIODesktop onlyCommunication & CollaborationBusiness & Commerce

Overview

AI-generated overview

BounceProtect is a local MCP server that lets an AI assistant validate email addresses and check SMTP deliverability through the BounceProtect service.

What you can do
Validate a single email address and get a validity result from the BounceProtect service, including SMTP verification where applicable. Validate a batch of up to 100 email addresses at once and report which ones are valid or should be removed. Check the remaining credit balance on the BounceProtect account.
When to use it
Useful when cleaning contact or mailing lists, checking addresses before sending campaigns, or having an assistant screen emails pasted into a conversation. It is a narrow single-purpose tool, so add it only if email validation is a recurring task.
Requirements
Runs as a local process via the npm package @bounceprotect/mcp over stdio, so Node.js is needed. Requires a BounceProtect account and an API key supplied through the YOUR_API_KEY environment variable; the README shows a BOUNCEPROTECT_API_KEY variable in its config examples. Network access to the BounceProtect service is required. Desktop clients only.
Before you install
The API key is a secret and should be kept out of shared configuration files. Each validation consumes credits, so bulk checks of up to 100 addresses spend account credits; the README notes 1 credit per validation and 100 free credits to start. Email addresses submitted for validation are sent to the third-party BounceProtect service.

Installation

In SourceWeft

  1. Open Bounceprotect in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

BounceProtect MCP Server

Validate email addresses directly from Claude, Cursor, or any MCP-compatible AI assistant.

Tools available

  • validate_email — validate a single email
  • validate_emails_bulk — validate up to 100 emails at once
  • check_credits — check your credit balance

Setup

Get your API key

  1. Sign up at https://bounceprotect.com
  2. Go to Dashboard → API Keys
  3. Create a new key

Install and configure

Claude Desktop

Add to your claude_desktop_config.json:

json
{  "mcpServers": {    "bounceprotect": {      "command": "node",      "args": ["/path/to/mcp-server/index.js"],      "env": {        "BOUNCEPROTECT_API_KEY": "your-api-key-here"      }    }  }}
Cursor

Add to your Cursor MCP settings:

json
{  "bounceprotect": {    "command": "node",    "args": ["/path/to/mcp-server/index.js"],    "env": {      "BOUNCEPROTECT_API_KEY": "your-api-key-here"    }  }}

Example usage

Once configured, you can ask your AI assistant:

  • "Validate the email [email protected]"
  • "Check if these 5 emails are valid: [list]"
  • "How many BounceProtect credits do I have left?"
  • "Validate all the emails in this list and tell me which ones to remove"

Pricing

Each email validation costs 1 credit. Start with 100 free credits at bounceprotect.com.

Source: README.md at commit e42e961

Tools

0
SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

1
  1. v1.0.3LatestSep 16, 2026

Score

40% of the applicable checks met

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  • Reached in the last 30 days25 pts

    Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.

  • Auth declared10 pts

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  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts

    Declare a license in the repository or the registry entry.