PureChecker MCP for AI Agents

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with PureChecker MCP or direct API to verify single emails, batch-validate lists, check domain and MX records, and flag disposable or high-risk addresses through natural language.

PureChecker logoPureChecker
Api Key

PureChecker verifies individual or batched email addresses for syntax, domain, deliverability, disposability, and risk signals. Use it to boost deliverability, remove risky/disposable addresses, and reduce bounce rates.

2 Tools

Try PureChecker now

Type what you want done — sign in and watch it run live in the Tool Router playground.

TOOL ROUTER PLAYGROUND
PureChecker
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TOOLS

Supported Tools

Every PureChecker action and event your agent gets out of the box.

Check Email

Check one email address and return PureChecker's detailed syntax, domain, mailbox, disposability, and risk signals.

Check Emails

Check a batch of email addresses in one request and return PureChecker's verification signals for each address.

SETUP GUIDE

Connect PureChecker MCP Tool with your Agent

1

Install Composio

typescript
npm install @composio/core ai @ai-sdk/openai @ai-sdk/mcp
Install the Composio SDK for Python or TypeScript
2

Initialize Client and Create Tool Router Session

typescript
import { Composio } from '@composio/core';

const composio = new Composio({ apiKey: 'your-api-key' });
const session = await composio.create('your-user-id');
console.log(`Tool Router session created: ${session.mcp.url}`);
Import and initialize the Composio client, then create a Tool Router session for PureChecker
3

Connect to AI Agent

typescript
import { openai } from '@ai-sdk/openai';
import { experimental_createMCPClient as createMCPClient } from '@ai-sdk/mcp';
import { generateText } from 'ai';

const client = await createMCPClient({
  transport: {
    type: 'http',
    url: session.mcp.url,
    headers: {
      'x-api-key': 'your-composio-api-key',
    },
  },
});

const tools = await client.tools();
const { text } = await generateText({
  model: openai('gpt-4o'),
  tools,
  messages: [{
    role: 'user',
    content: 'Batch-validate these emails and list invalid or disposable ones: alice@example.com, bob@disposablemail.com, carol@gmail.com'
  }],
  maxSteps: 5,
});

console.log(`Agent: ${text}`);
Use the MCP server with your AI agent (Anthropic Claude or Mastra)
SETUP GUIDE

Connect PureChecker API Tool with your Agent

1

Install Composio

typescript
npm install @composio/openai
Install the Composio SDK
2

Initialize Composio and Create Tool Router Session

typescript
import OpenAI from 'openai';
import { Composio } from '@composio/core';
import { OpenAIResponsesProvider } from '@composio/openai';

const composio = new Composio({
  provider: new OpenAIResponsesProvider(),
});
const openai = new OpenAI({});
const session = await composio.create('your-user-id');
Import and initialize Composio client, then create a Tool Router session
3

Execute PureChecker Tools via Tool Router with Your Agent

typescript
const tools = session.tools;
const response = await openai.responses.create({
  model: 'gpt-4.1',
  tools: tools,
  input: [{
    role: 'user',
    content: 'Verify deliverability and disposable status for: alice@example.com, bob@disposablemail.com'
  }],
});
const result = await composio.provider.handleToolCalls(
  'your-user-id',
  response.output
);
console.log(result);
Get tools from Tool Router session and execute PureChecker actions with your Agent

Why Use Composio?

AI Native PureChecker Integration

  • Supports both PureChecker MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable tool execution
  • Rich coverage for reading, writing, and querying your PureChecker data

Managed Auth

  • Built-in OAuth handling with automatic token refresh and rotation
  • Central place to manage, scope, and revoke PureChecker access
  • Per user and per environment credentials instead of hard-coded keys

Agent Optimized Design

  • Tools are tuned using real error and success rates to improve reliability over time
  • Comprehensive execution logs so you always know what ran, when, and on whose behalf

Enterprise Grade Security

  • Fine-grained RBAC so you control which agents and users can access PureChecker
  • Scoped, least privilege access to PureChecker resources
  • Full audit trail of agent actions to support review and compliance
FRAMEWORKS

Use PureChecker with any AI Agent Framework

Choose a Framework you want to connect PureChecker with

FAQ

Frequently asked questions

Yes — PureChecker requires you to configure your own API key credentials. Once set up, Composio handles secure credential storage and API request handling for you.

Yes! Composio's Tool Router enables agents to use multiple toolkits. Learn more.

Composio is SOC 2 and ISO 27001 compliant with all data encrypted in transit and at rest. Learn more.

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

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Managed auth, hosted MCP servers, and every PureChecker tool your agent needs.Free to start.

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