Is the SecurityTrails API free to use?

SecurityTrails offers a Free Tier API plan which allows 50 API requests per month. This is excellent for specific, targeted OSINT investigations. For automated or large-scale recon, you would need a commercial subscription.

What is historical DNS good for?

Companies often migrate infrastructure and hide behind WAFs like Cloudflare. Historical DNS reveals the original origin IP addresses used before the WAF was implemented, which might still be active and vulnerable to direct attacks. It's a critical tool in penetration testing.

How can I find related domains for a target company?

Use the `get_associated_domains` tool. It uses proprietary correlation to find other domains owned by the same entity. You can also use `get_domains_by_ip` to find what else is hosted on their IP space.

SecurityTrails MCP Server for Google ADK 10 tools — connect in under 2 minutes

Name: SecurityTrails
Availability: InStock
Author: Vinkius

google.github.io/adk-docs/tools/mcp-tools

Built by Vinkius GDPR 10 Tools SDK

Google Agent Development Kit (ADK) is Google's framework for building production AI agents. Add SecurityTrails as an MCP tool provider through Vinkius and your ADK agents can call every tool with full schema introspection.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

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Vinkius supports streamable HTTP and SSE.

python

from google.adk.agents import Agent
from google.adk.tools.mcp_tool import McpToolset
from google.adk.tools.mcp_tool.mcp_session_manager import (
    StreamableHTTPConnectionParams,
)

# Your Vinkius token. get it at cloud.vinkius.com
mcp_tools = McpToolset(
    connection_params=StreamableHTTPConnectionParams(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
    )
)

agent = Agent(
    model="gemini-2.5-pro",
    name="securitytrails_agent",
    instruction=(
        "You help users interact with SecurityTrails "
        "using 10 available tools."
    ),
    tools=[mcp_tools],
)

Fully ManagedVinkius Servers

60%Token savings

High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About SecurityTrails MCP Server

Connect your SecurityTrails account to any AI agent and empower your OSINT, bug bounty, and threat intelligence workflows with the world's most comprehensive domain and IP database.

Google ADK natively supports SecurityTrails as an MCP tool provider. declare Vinkius Edge URL and the framework handles discovery, validation, and execution automatically. Combine 10 tools with Gemini's long-context reasoning for complex multi-tool workflows, with production-ready session management and evaluation built in.

What you can do

Attack Surface Mapping — Instantly enumerate all subdomains for any target organization to map their external footprint
Historical DNS Analysis — Look back in time at DNS records (A, MX, NS, TXT) to find hidden infrastructure, bypassed firewalls, or legacy systems
Reverse IP Lookups — Find all domains hosted on a specific IP address to identify shared hosting or related corporate assets
Advanced Threat Hunting — Use the SecurityTrails DSL (Domain Specific Language) to query the entire internet for specific tech stacks or vulnerable infrastructure
Ownership Intelligence — Access current and historical WHOIS records to track domain ownership changes and unmask hidden threat actors
Corporate Associations — Discover domains strongly associated with your primary target to expand your investigation scope

The SecurityTrails MCP Server exposes 10 tools through the Vinkius. Connect it to Google ADK in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect SecurityTrails to Google ADK via MCP

Follow these steps to integrate the SecurityTrails MCP Server with Google ADK.

Install Google ADK

Run pip install google-adk

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Create the agent

Save the code above and integrate into your ADK workflow

Explore tools

The agent will discover 10 tools from SecurityTrails via MCP

Why Use Google ADK with the SecurityTrails MCP Server

Google ADK provides unique advantages when paired with SecurityTrails through the Model Context Protocol.

Google ADK natively supports MCP tool servers. declare a tool provider and the framework handles discovery, validation, and execution

Built on Gemini models, ADK provides long-context reasoning ideal for complex multi-tool workflows with SecurityTrails

Production-ready features like session management, evaluation, and deployment come built-in. not bolted on

Seamless integration with Google Cloud services means you can combine SecurityTrails tools with BigQuery, Vertex AI, and Cloud Functions

SecurityTrails + Google ADK Use Cases

Practical scenarios where Google ADK combined with the SecurityTrails MCP Server delivers measurable value.

Enterprise data agents: ADK agents query SecurityTrails and cross-reference results with internal databases for comprehensive analysis

Multi-modal workflows: combine SecurityTrails tool responses with Gemini's vision and language capabilities in a single agent

Automated compliance checks: schedule ADK agents to query SecurityTrails regularly and flag policy violations or configuration drift

Internal tool platforms: build self-service agent platforms where teams connect their own MCP servers including SecurityTrails

SecurityTrails MCP Tools for Google ADK (10)

These 10 tools become available when you connect SecurityTrails to Google ADK via MCP:

get_api_usage

Check current SecurityTrails API quota usage

get_associated_domains

Great for expanding the scope of an investigation. Find other domains associated with a target domain

get_dns_history

Useful for finding old IPs that might still be hosting vulnerable software, or tracking infrastructure migration over time. Retrieve historical DNS records for a domain

get_domain_details

Essential for mapping out a target domain's existing infrastructure. Get complete domain intelligence and current DNS records

get_domain_tags

Get classification tags for a domain

get_domains_by_ip

Essential for understanding shared hosting environments or identifying hidden vhosts. Find all domains pointed to a specific IP address

get_subdomains

Critical for attack surface mapping and asset discovery. Returns both active and inactive subdomains. Discover all subdomains for a given domain

get_whois

Get current WHOIS information for a domain

get_whois_history

Useful for OSINT investigations to uncover historical owners before privacy protection was enabled. Retrieve historical WHOIS records for a domain

search_dsl

Examples: `ipv4="1.1.1.1" AND mx="alt1.aspmx.l.google.com"` or `whois_email="admin@example.com"`. Check SecurityTrails docs for full DSL syntax. Advanced search using SecurityTrails DSL

Example Prompts for SecurityTrails in Google ADK

Ready-to-use prompts you can give your Google ADK agent to start working with SecurityTrails immediately.

"Find all subdomains for tesla.com."

"Check the historical 'A' records for example.com. Were there any changes in 2021?"

"What domains are hosted on the IP 8.8.8.8?"

Troubleshooting SecurityTrails MCP Server with Google ADK

Common issues when connecting SecurityTrails to Google ADK through the Vinkius, and how to resolve them.

McpToolset not found

Update: pip install --upgrade google-adk

SecurityTrails + Google ADK FAQ

Common questions about integrating SecurityTrails MCP Server with Google ADK.

How does Google ADK connect to MCP servers?

Import the MCP toolset class and pass the server URL. ADK discovers and registers all tools automatically, making them available to your agent's tool-use loop.

Can ADK agents use multiple MCP servers?

Yes. Declare multiple MCP tool providers in your agent configuration. ADK merges all tool schemas and the agent can call tools from any server in a single turn.

Which Gemini models work best with MCP tools?

Gemini 2.0 Flash and Pro models both support function calling required for MCP tools. Flash is recommended for latency-sensitive use cases, Pro for complex reasoning.