What does the ClearBounce MCP server cost?

Connecting is free. Verifying an email costs 1 credit per address — the same as the dashboard or API. Finding a business email and checking your balance are free. New accounts start with 100 free credits.

Which AI assistants are supported?

Any MCP-compatible client: Claude (web and desktop), Claude Code, ChatGPT (app directory or developer mode), Cursor, VS Code, Windsurf, Zed and more. Claude and ChatGPT connect with your ClearBounce login via OAuth; developer tools can also use an API key header.

How does authentication work?

Claude and ChatGPT use OAuth 2.1 with PKCE: you sign in on clearbounce.net and approve access — your password is never shared with the assistant. Developer tools can send a ClearBounce API key in the X-API-Key header instead.

Remove the connector in your assistant's settings (for example Settings → Connectors → ClearBounce → Disconnect in Claude). You can also rotate or delete your API key in the ClearBounce dashboard at any time.

What is the MCP server URL?

https://clearbounce.net/mcp — a stateless Streamable HTTP endpoint. The server is listed in the official MCP Registry as net.clearbounce/email-verification.

New · Model Context Protocol

Verify Emails Inside Claude & ChatGPT

Connect ClearBounce to your AI assistant. Ask it to verify an address, find a business email or check your credits — it calls ClearBounce and answers with live results, right in the conversation.

Works with Claude, ChatGPT, Claude Code, Cursor and any MCP client
Sign in with your ClearBounce account — no password shared with the assistant
Same engine and pricing as the dashboard: 1 credit per verification

Connect in 2 Minutes Get a Free Account

Your AI assistant

Is anna.keller@brightlabs.io safe to email?

Called ClearBounce · verify_email

Status Deliverable

Quality score 95 / 100

Mailbox check Accepted

Disposable / role / typo None detected

Yes — the mailbox exists and accepts mail. Quality score is 95/100, so it’s safe to send. You have 4,982 credits left.

Five Tools, Zero Copy-Paste

Once connected, your assistant can use these ClearBounce tools whenever the conversation needs them.

verify_email

Full verification of a single address — syntax, MX, live mailbox check, disposable, role, typo and risk scoring. 1 credit.

find_email

Give it a name and a company domain — it returns likely business addresses from published sources and patterns. Free.

check_credits

Ask “how many credits do I have left?” anytime — the balance comes straight from your account. Free.

verify_bulk

Hand it a list of 2 to 10,000 addresses and it runs as one bulk job — duplicates are removed for free. 1 credit per unique address.

check_bulk_status

Follows a bulk job and reports the summary counts when it finishes; the full result file is in your dashboard. Free.

Set Up the ClearBounce MCP Server in Two Minutes

One server URL works everywhere: https://clearbounce.net/mcp

Add to Cursor Add to VS Code

One click in Cursor or VS Code. For Claude and ChatGPT, follow the steps below.

Cursor install links need version 3.15.12 or newer — on older builds nothing happens, so add the server URL manually under Customize → MCPs.

Adding the ClearBounce custom connector in Claude settings with the MCP server URL

Claude (web & desktop)

1.Open Settings → Connectors → Add custom connector
2.Name it ClearBounce and paste https://clearbounce.net/mcp
3.Click Add — a ClearBounce sign-in window opens
4.Sign in, click Authorize, and you’re connected

ChatGPT

1.Open ClearBounce in the ChatGPT app directory and add it
2.Sign in to ClearBounce when prompted and approve

Or connect it manually in developer mode:

1.Enable Settings → Apps & Connectors → Developer mode
2.Create a new connector with URL https://clearbounce.net/mcp
3.Choose OAuth as authentication and click Create
4.Sign in to ClearBounce when prompted and approve

claude mcp add --transport http clearbounce \ https://clearbounce.net/mcp \ --header "X-API-Key: YOUR_API_KEY"

Claude Code MCP server list showing ClearBounce connected

Cursor, VS Code, Windsurf and other tools: add an HTTP MCP server with the same URL and an X-API-Key header.

Claude Code & developer tools

Fastest in Claude Code: install the ClearBounce plugin, then run /mcp and sign in — no API key needed.

/plugin marketplace add tlgcklr/clearbounce-claude-plugin /plugin install clearbounce@clearbounce

The plugin is also listed in Claude’s plugin directory for Claude Code, Cowork and the Claude apps.

Or add the server with an API key:

1.Create an API key in your dashboard (free account works)
2.Run the command on the left with your key
3.Type /mcp to confirm ClearBounce is connected

Built Like a Proper Integration

ClearBounce OAuth consent screen showing the exact permissions an assistant receives

You approve exactly what it can do

When an assistant connects, you sign in on clearbounce.net and see this screen first. Nothing happens to your account until you click Authorize — and you can revoke access at any time.

OAuth 2.1 with PKCE

Claude and ChatGPT connect through a standard OAuth flow. You sign in on clearbounce.net — your password never touches the assistant.

Listed in the official MCP Registry

Published as net.clearbounce/email-verification with verified domain ownership — not an anonymous endpoint.

Revoke anytime

Disconnect from your assistant’s settings, or rotate the API key in your dashboard. Access stops immediately.

Same engine, same account

Every call runs through the exact verification engine behind the dashboard and API, and shows up in your usage history.

Frequently Asked Questions

What does it cost?

Connecting is free. Verifying an email costs 1 credit — the same as the dashboard or API. Finding emails and checking your balance are free. New accounts start with 100 free credits, and ClearBounce credits never expire.

Do I need a paid AI plan?

No — Claude supports custom connectors on the free plan too (limited to one connector; paid plans allow more). ChatGPT needs developer mode enabled. Claude Code and editor integrations work with an API key.

What data does the assistant see?

Only what the tools return: verification results, found addresses and your credit balance. The assistant never sees your password, billing details or the rest of your account.

Can my whole team use it?

Yes — each teammate connects with their own ClearBounce login (or a shared API key in developer tools). Usage is tracked per account like any other channel.

Can I verify a whole list this way?

Yes. Ask your assistant to verify a list and it starts a bulk job with verify_bulk (up to 10,000 addresses per job), then reports the summary with check_bulk_status. The full result file is ready to download in the dashboard — the same bulk verification pipeline, at the same price.