Where do I find my NeverBounce API Key?

Log in to your NeverBounce dashboard and navigate to the API section to create or copy your 'Secret Key'.

What do the different result statuses mean?

'Valid' means the email is safe to send. 'Invalid' will bounce. 'Disposable' are temporary addresses, and 'Catchall' means the domain accepts all mail, making deliverability uncertain.

How do I start a bulk verification job?

First, use `create_job_from_url` or `create_job_from_input`. Then, call `parse_job` followed by `start_job` to begin the verification process.

NeverBounce MCP Server for Claude Desktop 10 tools — connect in under 2 minutes

Name: NeverBounce
Availability: InStock
Author: Vinkius

modelcontextprotocol.io/quickstart/user

Built by Vinkius GDPR 10 Tools IDE

Claude Desktop is Anthropic's native application for interacting with Claude AI models on macOS and Windows. It was the first consumer application to ship with built-in MCP support, making it the reference implementation for the Model Context Protocol standard.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

RecommendedModern Approach — Zero Configuration

Vinkius Desktop App

The modern way to manage MCP Servers — no config files, no terminal commands. Install NeverBounce and 2,500+ MCP Servers from a single visual interface.

Download Free Open SourceNo signup required

Classic Setup·json

{
  "mcpServers": {
    "neverbounce": {
      // Your Vinkius token. get it at cloud.vinkius.com
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Fully ManagedVinkius Servers

60%Token savings

High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About NeverBounce MCP Server

Connect your NeverBounce account to your AI agent and ensure your email lists are clean and deliverable through natural conversation.

Claude Desktop is the definitive way to connect NeverBounce to your AI workflow. Add Vinkius Edge URL to your config, restart the app, and Claude immediately exposes all 10 tools in the chat interface. ask a question, Claude calls the right tool, and you see the answer. Zero code, zero context switching.

What you can do

Real-time Verification — Check a single email address instantly to get its status (valid, invalid, disposable, etc.).
Bulk Job Management — Create, parse, and start bulk verification jobs from URLs or raw input arrays.
Progress Tracking — Monitor the status and progress of your active bulk jobs in real-time.
Result Retrieval — Fetch the verification results for all emails in a completed job for download or analysis.
Account Oversight — Check your remaining credit balance and list all recent jobs in your history.
Deep Inspection — Fetch detailed metadata and flags for specific email checks or job IDs.

The NeverBounce MCP Server exposes 10 tools through the Vinkius. Connect it to Claude Desktop in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect NeverBounce to Claude Desktop via MCP

Follow these steps to integrate the NeverBounce MCP Server with Claude Desktop.

Open Claude Desktop Settings

Go to Settings → Developer → Edit Config to open claude_desktop_config.json

Add the MCP Server

Paste the configuration above into the mcpServers section

Restart Claude Desktop

Close and reopen Claude Desktop to load the new server

Start using NeverBounce

Look for the 🔌 icon in the chat. your 10 tools are now available

Why Use Claude Desktop with the NeverBounce MCP Server

Claude Desktop by Anthropic provides unique advantages when paired with NeverBounce through the Model Context Protocol.

Claude Desktop is the reference MCP client. it was designed alongside the protocol itself, ensuring the most complete and stable MCP implementation available

Zero-code configuration: add a server URL to a JSON file and Claude instantly discovers and exposes all available tools in the chat interface

Claude's extended thinking capability lets it reason through multi-step tool usage, chaining multiple API calls to answer complex questions

Enterprise-grade security with local config storage. your tokens never leave your machine, and connections go directly to Vinkius Edge network

NeverBounce + Claude Desktop Use Cases

Practical scenarios where Claude Desktop combined with the NeverBounce MCP Server delivers measurable value.

Interactive data exploration: ask Claude to query DNS records, look up WHOIS data, and cross-reference results in a single conversation

Ad-hoc security audits: type a domain name and let Claude enumerate subdomains, check DNS history, and flag configuration anomalies. all through natural language

Executive briefings: generate comprehensive domain intelligence reports by asking Claude to compile findings into a formatted summary

Learning and training: new team members can explore API capabilities conversationally without needing to read documentation

NeverBounce MCP Tools for Claude Desktop (10)

These 10 tools become available when you connect NeverBounce to Claude Desktop via MCP:

check_email

Verify a single email address

create_job_from_input

Create a bulk job from raw input

create_job_from_url

Create a bulk job from a remote CSV URL

delete_job

Delete a bulk job

get_account_info

Get account credits and info

get_job_results

Get results of a completed bulk job

get_job_status

Check status of a bulk job

list_jobs

List bulk verification jobs

parse_job

Parse a bulk job

start_job

Start a bulk job

Example Prompts for NeverBounce in Claude Desktop

Ready-to-use prompts you can give your Claude Desktop agent to start working with NeverBounce immediately.

"Verify if the email 'test@example.com' is valid."

"List all my recent verification jobs."

"Check the status of job ID 123456."

Troubleshooting NeverBounce MCP Server with Claude Desktop

Common issues when connecting NeverBounce to Claude Desktop through the Vinkius, and how to resolve them.

Server not appearing after restart

Ensure the JSON is valid (no trailing commas). Check the file path: ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\\Claude\\ (Windows).

Authentication error

Verify your Vinkius token is correct. Go to cloud.vinkius.com to regenerate it if needed.

Tools not showing in chat

Click the 🔌 icon at the bottom of the chat input. If it shows 0 tools, the server may still be connecting. wait a few seconds.

NeverBounce + Claude Desktop FAQ

Common questions about integrating NeverBounce MCP Server with Claude Desktop.

How does Claude Desktop discover MCP tools?

When Claude Desktop starts, it reads the claude_desktop_config.json file and connects to each configured MCP server. It calls the tools/list endpoint to fetch the schema for every available tool, then surfaces them as clickable options in the chat interface via the 🔌 icon.

What happens if the MCP server is temporarily unavailable?

Claude Desktop handles disconnections gracefully. if the server is unreachable at startup, the tools simply won't appear. Once the server becomes available again, restarting Claude Desktop will re-establish the connection. There is no timeout penalty or error loop.

Can I connect multiple MCP servers simultaneously?

Yes. You can add as many servers as you need in the mcpServers section of the config file. Each server appears as a separate tool provider, and Claude can use tools from multiple servers in a single conversation turn.

Is there a limit on the number of tools per server?

Claude Desktop can handle hundreds of tools per server. However, for optimal LLM performance, Vinkius servers are designed to expose focused, well-documented tool sets rather than overwhelming the model with too many options.

Does Claude Desktop support Streamable HTTP transport?

Yes. Claude Desktop supports both SSE (Server-Sent Events) and the newer Streamable HTTP transport that Vinkius uses. Simply provide the server URL. Claude auto-negotiates the transport protocol.