Email Validation Skill

What this skill does

Let your agent verify email addresses. Call it as an MCP tool to check format, domain and mailbox validity before your app trusts an email. You switch it on with a single toggle — no SDK and no endpoint wiring — and it answers over MCP or REST using the same key as every other skill.

See it work

A real response from the Email Validation Skill — exactly what your agent gets back when it makes the call.

vervekit · emailvalidatortool call

{
  "email": "[email protected]"
}

result

email: [email protected]
domain: myspace.com
username: support
isRegexValid: true
hasTypo: false
isMxValid: true
isValid: true
isFreeEmail: false

+6 more fields

Run it with your own input. Live calls happen in your dashboard, on your key.

Sign in to try

Ways to use it

Validate signups at the edge

Enable Email Validator and your app can check an address is real and safe before it creates the account — one skill, no separate validation service to run.

A guardrail tool for agents

Over MCP, your model can call emailvalidator to verify an address before it sends or stores anything, closing off a common failure mode.

One request from any stack

Call emailvalidator over REST to check addresses inline in your signup flow or a backend cleanup job.

Use it in your app

Once enabled, this skill is reachable two ways — pick whichever fits how you build. Both use the same key.

For AI agentsMCP

It appears to your model as a callable tool. No extra code — the agent invokes it when a task needs it.

emailvalidator

For apps & backendsREST

Call it from your server with one request and your key. Node, Python, Go — anything that can send a GET.

GET /v1/emailvalidator

Ask your agent

“Enable Email Validation and ask your agent to validate email.”
“Is this input real and safe to use?”

Email Validation Skill, answered

How to connect it over MCP or REST.

How do I add Email Validation to my app or agent?

Enable the Email Validation Skill on VerveKit, then reach it two ways with the same key: over MCP (it appears to your agent as the emailvalidator tool) or over REST (call it from any backend). No SDK to install and no endpoint to wire.

MCP or REST — which should I use?

Both work off one key. Use MCP when an AI agent should decide when to validate email — the skill shows up as a callable tool. Use REST when your own server-side code should call it directly. Many apps use both.

Which agents and frameworks does it work with?

Any MCP client — Claude, Cursor, LangChain, and custom agents all speak the Model Context Protocol, so Email Validation appears as a standard tool with nothing skill-specific to integrate.

How many credits does a Email Validation call cost?

Each call costs 5 credits. Every skill rides the same key and the same connection, so enabling more skills doesn't add more integrations to manage.

Do I need to install anything?

No SDK and no endpoint wiring — enabling the skill is a toggle. You point your agent at the VerveKit MCP endpoint (or call REST) and Email Validation is available immediately.

Where does the data come from, and what shows on my bill?

VerveKit runs on APIVerve, our production data engine; Email Validation is one of 300+ skills on the same key. Invoices and card statements show APIVERVE.

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Validate signups at the edge

A guardrail tool for agents

One request from any stack

Email Validation Skill, answered

Give your software a way to act on the world.

Scaling in production?