Bouncer MCP server

Connect Bouncer to Claude, ChatGPT, Cursor, Claude Code, Codex, Gemini, GitHub Copilot and any other MCP client, for your whole team. Metorial adds security, governance, and tracing, and gives everyone one Magic MCP URL to connect.

What you can do with the Bouncer MCP server

Ask your agent in plain language. Each of these maps to a real tool on the server.

  • Use the batch verify emails tool in Bouncer
  • Use the verify email tool in Bouncer
  • Use the verify domain tool in Bouncer
  • Use the check email toxicity tool in Bouncer
  • Use the get toxicity status tool in Bouncer
  • Use the get toxicity results tool in Bouncer

Supported Tools

batch_verify_emails

Batch Verify Emails

Verify multiple email addresses synchronously in a single request. Submits emails to a batch processing queue and returns results when verification is complete. Ideal for verifying small to medium lists where you need immediate results.

verify_email

Verify Email

Verify a single email address in real-time. Checks syntax, domain validity, and contacts SMTP servers to determine deliverability. Returns detailed information including deliverability status, domain characteristics (disposable, free, accept-all), account details, DNS records, email provider, deliverability score, and toxicity flag.

verify_domain

Verify Domain

Verify whether a domain has valid MX records and check its characteristics. Returns information about whether the domain accepts all emails (catch-all), is disposable, is a free email provider, and its DNS records.

check_toxicity

Check Email Toxicity

Create a toxicity check job for a list of email addresses. Identifies toxic emails such as widely circulated or breached addresses, complainers, litigators, and potential spam traps. Returns a job ID to track progress and download results.

get_toxicity_status

Get Toxicity Status

Check the status of a toxicity check job. Use this to determine whether the job has completed processing and results are ready for download.

get_toxicity_results

Get Toxicity Results

Download the results of a completed toxicity check job. Returns toxicity scores for each email address on a scale of 0–5. Higher scores indicate higher probability of the address being a spam trap or otherwise harmful.

get_batch_results

Get Batch Results

Download the results of a completed asynchronous batch email verification. Returns detailed verification data for each email. Results can be filtered by deliverability status.

create_batch_verification

Create Batch Verification

Submit a list of email addresses for asynchronous batch verification. Returns a batch ID that can be used to check status and download results later. This is the recommended approach for large email lists where the highest verification quality is needed, as Bouncer's distributed infrastructure retries verifications when required.

get_batch_status

Get Batch Status

Check the status of an asynchronous batch email verification job. Returns the current processing state, progress statistics, and timestamps. Use this to poll for completion after creating a batch verification.

check_credits

Check Credits

Check the available verification credits on your Bouncer account. Useful for monitoring usage and ensuring sufficient credits before running verifications.

finish_batch_verification

Finish Batch Verification

Request that a running verification batch finish early. Bouncer returns credits for emails that have not been verified. Processing finishes asynchronously; completed results remain available for download.

delete_batch_verification

Delete Batch Verification

Delete the emails and results associated with a verification batch. Deleted results cannot be downloaded again. Bouncer rejects deletion when the batch is in an incompatible state.

delete_toxicity_job

Delete Toxicity Job

Delete a toxicity check job and its stored email list and results from Bouncer.

Connect Bouncer to your AI client

Every client uses the same Magic MCP URL, and so does any other MCP client. Add it once and sign in with SSO.

  1. Enable Bouncer in Metorial. In your Metorial portal, enable the Bouncer MCP server and sign in with the account that owns the data. Access stays governed by your team policies.
  2. Add a custom connector. Open Customize, then Connectors. Select Add, then Custom, then Web.
  3. Paste your Metorial MCP URL. Name it Metorial, paste your Magic MCP URL (<your-magic-mcp-url>) and continue.
  4. Sign in. Select Add and sign in to load Bouncer tools.

Run Bouncer through the Metorial gateway

One governed layer for every app your agents reach, not a separate connector per tool.

  • Give Bouncer and every other app to your whole team through one MCP gateway, behind your SSO.
  • Scope which teams and agents can use Bouncer tools with role-based access control, and trace every call.
  • Prefer to run it yourself? Metorial is open source and self-hostable.

More integrations teams use with Bouncer

Slack

Slack: connect with bot OAuth or user OAuth to work with messages, conversations, search, files, Canvases, Lists, profiles, reactions, reminders, and workspace productivity settings.

Salesforce

Manage CRM data including Accounts, Contacts, Leads, Opportunities, Cases, and custom objects. Create, read, update, and delete records. Query data using SOQL and search across objects using SOSL. Perform bulk data operations for large-scale imports, exports, and migrations. Execute composite requests to batch multiple operations in a single API call. Access analytics, reports, and dashboards. Manage files and attachments associated with records. Interact with Chatter feeds, posts, and groups for social collaboration. Manage org metadata including custom objects, fields, layouts, and workflows. Query data using GraphQL for precise data retrieval across related objects.

Apolloio

Search and prospect B2B contacts and companies from a database of over 275 million people and 70 million organizations. Enrich people and company data with emails, phone numbers, and firmographic details. Create and manage contacts, accounts, deals, and tasks. Add contacts to email sequences and manage sequence statuses. Log and search call records. Perform bulk operations for contact creation, account creation, task creation, and data enrichment.

Sharepoint

Manage SharePoint sites, document libraries, lists, and files. Create, read, update, and delete lists and list items with custom columns. Resolve site users to numeric Person/Group LookupId values. Upload, download, move, copy, and version files in document libraries. Search across sites, files, folders, lists, and list items using Microsoft Search. Manage permissions at site, list, and item levels with granular access control. Define and manage content types and site columns. Retrieve site properties and search for sites across Microsoft 365.

Microsoft Outlook

Send, read, reply to, forward, and manage email messages in user mailboxes. Organize messages into folders, apply categories, flags, and importance levels. Manage file and item attachments. Create, update, delete, and respond to calendar events and meetings. Find available meeting times, manage attendees, handle recurrence, and work with shared or delegated calendars. Create, read, update, and delete contacts, organize them into contact folders, and manage contact photos. Manage tasks and task lists via Microsoft To Do, including due dates, reminders, recurrence, and checklist items. Support for Focused Inbox, @-mentions, mail tips, send-on-behalf, and send-as capabilities.

Hubspot

Create, read, update, and delete CRM objects including contacts, companies, deals, tickets, and custom objects. Manage associations between CRM records. Track engagements such as calls, emails, meetings, notes, and tasks. Send transactional and marketing emails, manage campaigns, and handle subscription preferences. Build and manage marketing workflows, sequences, and automation actions. Manage CMS content including blog posts, landing pages, and HubDB tables. Handle commerce data including products, orders, invoices, quotes, and payments. Create and manage contact lists for segmentation. Configure deal, ticket, and order pipelines with custom stages. Search and filter CRM records. Bulk import and export CRM data. Manage users, teams, and account settings.

Technical notes for Bouncer

Verify and validate email addresses for deliverability, toxicity, and domain health. Perform real-time single email verification or batch verify up to 500,000 emails asynchronously. Check if emails are deliverable, undeliverable, risky, or unknown, and detect disposable, role-based, or catch-all addresses. Run toxicity checks to identify breached, spam-trap, or complainer emails on a 1-5 scale. Verify domain MX records and catch-all behavior. Monitor account credit balance for usage tracking.

Frequently asked questions

Common questions about connecting Bouncer to AI agents with Metorial.

  1. How many tools does the Bouncer MCP server have?
    The Bouncer MCP server exposes 13 tools, including Batch Verify Emails, Verify Email, Verify Domain. Each one is governed and traced through Metorial.
  2. Bouncer exposes tools your agents call on demand; it does not publish event triggers yet. Everything still runs through one governed MCP URL.
  3. Any MCP client, including VS Code, Windsurf, Zed, OpenCode and Grok. Each one reaches the Bouncer MCP server through the same Metorial URL.
  4. Use role-based access control to decide which teams, users, and agents can use Bouncer and which of its tools they can call.
  5. Yes. Metorial is open source, so you can run the Bouncer MCP server yourself or use the hosted gateway.

Connect Bouncer to production AI agents

See how Metorial gives your team governed access to Bouncer, with tracing and security controls built in.