How to Use the Censys MCP in Mastra AI

Q: How do I register the Censys MCP Server tools with a Mastra AI agent?

Instantiate the client using @mastra/mcp with your Vinkius server URL. Retrieve the tools using the list method and spread them directly into your agent's tool configuration array.

Q: How do I compare two different servers in a workflow?

Use viewhostdiff to compare the configuration of two separate IP addresses. The tool returns the exact differences in open ports and banners, which your agent can use to find config drift.

Build automated threat response workflows with Mastra AI and the Censys integration.

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Connect Censys MCP to Mastra AI

Create your Vinkius account to connect Censys to Mastra AI and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Censys with Mastra AI

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Track Host History in Mastra AI Workflows

`get_host_history` tracks changes to an IP address's open ports and services over time. This tool lets your workflow monitor critical servers and trigger alerts when new ports open up. If a change is found, Mastra's workflow engine can branch to notify your team or run deeper scans. You can build these multi-step security checks with built-in retries to handle network blips gracefully.

Query Internet Hosts via Mastra Agent Tools

Running this MCP Server allows your agent to scan the entire internet for specific open ports, protocols, or operating systems using `search_hosts`. It parses service banners to find exposed databases or unpatched systems in minutes. The workflow can pass these results to `get_certificate` to inspect the SSL/TLS details of any discovered host. If a certificate is self-signed or expired, the agent automatically flags it for review.

Manage Censys MCP Server Quotas Automatically

`get_account_info` checks your current Censys API usage and remaining query limits. Your Mastra agents can query this before kicking off massive sweeps to avoid hitting rate limits mid-run. If your quota is running low, the workflow engine can pause execution or switch to a lower-frequency monitoring mode. This keeps your automated security runs predictable and cost-effective.

Setup guide

Set up Censys MCP in Mastra AI

Prerequisites

Node.js 18+ and a TypeScript project
@mastra/mcp + @mastra/core packages
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Run npm install @mastra/mcp @mastra/core plus your preferred model provider (e.g. @ai-sdk/openai).
2

Configure the MCPClient
Create an MCPClient with your Vinkius endpoint as a URL object. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Discover and inject tools
Call mcpClient.listTools() and spread the result into your agent's tools object. All Censys tools become native Mastra tools.
4

Run with any model
Swap openai("gpt-4o") for any AI SDK-compatible provider. Call agent.generate() and the agent routes tool calls through MCP automatically.

agent.ts

import { MCPClient } from "@mastra/mcp";
import { Agent } from "@mastra/core/agent";
import { openai } from "@ai-sdk/openai";

const mcpClient = new MCPClient({
  id: "censys-mcp-client",
  servers: {
    "censys-mcp": {
      url: new URL(
        "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
      ),
    },
  },
});

const agent = new Agent({
  name: "Censys Agent",
  model: openai("gpt-4o"),
  instructions: "You have access to Censys tools.",
  tools: {
    ...(await mcpClient.listTools()),
  },
});

const result = await agent.generate(
  "List recent Censys transactions"
);
console.log(result.text);

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Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Censys. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about Censys MCP in Mastra AI

Instantiate the client using `@mastra/mcp` with your Vinkius server URL. Retrieve the tools using the list method and spread them directly into your agent's tool configuration array.

Yes, you can configure Mastra's tool approval flag on specific tools like `search_hosts`. This stops the agent and waits for a human operator to approve the query before hitting the live internet.

Mastra handles this using its built-in workflow engine with exponential backoff retries. If the tool fails due to a temporary network issue, the system automatically retries the call.

Use `view_host_diff` to compare the configuration of two separate IP addresses. The tool returns the exact differences in open ports and banners, which your agent can use to find config drift.

All certificate data and host IPs are processed inside an ephemeral, zero-trust V8 isolate sandbox. Vinkius ensures that your search queries and target IPs are completely isolated and never persist on disk.

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