Data & Analytics · Nextdns + Claude
NextDNS MCP with Claude: Monitor DNS Logs and Manage Security Filters
The short answer
Claude works with NextDNS through the Model Context Protocol (MCP), an open standard that lets Claude securely read information and take approved actions in the tool. Once connected with an API key, Claude can review DNS logs, update blocklists and adjust privacy settings from plain-language instructions, under permissions the organisation controls.
What is Nextdns?
NextDNS is a DNS service that blocks malicious sites, advertising and trackers before they reach a device. It gives real-time protection and granular control over what a network can reach. IT teams, security staff, small offices and privacy-minded households use it to filter traffic across many devices from one dashboard. Because DNS sits at the start of almost every connection, it is a useful place to spot unusual activity and enforce policy.
How Claude connects to Nextdns through MCP
The Model Context Protocol is an open standard that lets Claude use other software securely. Think of it as a universal adapter between Claude and the tool. Claude does not get open-ended access. It only uses the connections and permissions that the organisation sets up for it, so the people responsible for security stay in charge.
Once NextDNS is connected, Claude can read DNS logs, review which domains were blocked or allowed, and explain patterns in plain English. It can also prepare changes to security filters, blocklists and privacy settings. For example, a team lead could ask which devices made the most blocked requests last week and get a clear summary.
Access is set up with least-privilege permissions, using the API key that NextDNS supports. Consequential actions, such as adding a broad block rule or changing a shared filter, can be set to require a person's approval before they take effect. Every request and action can be logged, so the organisation can see what was done, when and by whom.
What you can automate
Weekly DNS activity summaries
Claude pulls recent DNS logs and produces a short summary of top blocked categories, busiest devices and unusual spikes. Operations or IT managers receive a readable report each week instead of scrolling through raw entries. The summary highlights what needs attention and what can be ignored.
Investigating suspicious device behaviour
When a security alert or user complaint points to a device, Claude can review its recent DNS queries and identify domains that look unfamiliar or risky. The analyst gets a list of evidence to verify, saving time on manual log searches. Final decisions remain with the security team.
Blocklist maintenance
Staff can ask Claude to add or remove domains from a blocklist using simple instructions, such as blocking a newly reported phishing domain across all office devices. Claude prepares the change and can route it for approval before it goes live. This keeps the list current without manual editing.
Privacy settings for distributed teams
A remote-work or family-office administrator can ask Claude to review and adjust privacy settings across several profiles. Claude can compare current settings against the organisation's standard and flag gaps. Changes follow the approval rules the team has agreed.
Compliance evidence and audit support
Compliance staff often need records showing that filtering policies were in place and reviewed. Claude can compile a summary of filter changes and log activity for a given period. This makes audit preparation faster and more consistent.
An end-to-end workflow: Phishing domain response across the office
TriggerA staff member reports a suspicious link, or the IT helpdesk ticketing system receives a phishing alert.
The helpdesk ticket is passed to Claude, which reads the reported domain and its details.
Claude checks NextDNS logs to see whether any office devices already queried that domain and how often.
Claude drafts a blocklist update for the domain and lists the affected devices for the security lead.
The security lead approves the change in the review step, and it is applied to the NextDNS profile.
Claude records the action in the ticket and sends a short summary to the team in Microsoft 365 Teams.
OutcomeSuspicious domains are blocked quickly across the organisation, affected devices are identified, and every step is documented in the ticketing system. Response times typically shorten, and the audit trail is complete.
How we set it up
Free automation audit
We review how your team monitors DNS and manages filters today, and identify the workflows worth automating. You receive a clear list of options and expected benefits, at no cost.
Secure connection with an API key
We set up the connection using the API key that NextDNS supports. The key is stored securely, and access is limited to the actions your workflow needs.
Workflow design
We design the end-to-end process across NextDNS and your other systems, such as Microsoft 365, your ticketing tool or CRM. We agree which actions Claude can take alone and which need human approval.
Testing and launch
We test the workflow against real past cases, such as previous log reviews or blocklist changes. After sign-off we launch with monitoring and audit logs turned on.
Team training
We train your administrators and analysts on how to make requests, review Claude's output and approve changes. We leave clear guides so the team can work confidently after launch.
Who benefits
- IT and security managers
- Faster review of DNS activity and quicker blocklist updates, with approval steps and logs in place.
- Operations heads
- Regular plain-English summaries of filtering activity without needing technical log-reading skills.
- Helpdesk and support leads
- Faster triage of reported suspicious domains, with each action recorded in the ticket.
- Compliance and privacy officers
- Easier preparation of evidence showing filter policies were applied and reviewed.
Security and control
- Least-privilege access, so Claude only reaches what each workflow needs.
- Human approval for consequential changes such as broad block rules or shared filter updates.
- Full audit logs of requests, changes and approvals.
- Clear rules on which data Claude may read and summarise.
- Regular review of connection permissions and the API key.
For teams in the US, UK, India and the Middle East
Organisations in the United States and the United Kingdom can align the setup with their own security and data protection requirements. In India, we design workflows to meet the Digital Personal Data Protection Act, 2023. For organisations in the UAE and Saudi Arabia, we take local data protection laws into account. We choose the hosting region for any custom application to meet these requirements.
Learn more about Claude and MCP
Anthropic's AI model and assistant.
Secure links between Claude and business tools.
How engineers build and change software with Claude.
Hosted agents that run multi-step work.
The open standard Claude uses to connect to tools.
Frequently asked questions
What does the NextDNS MCP server do?
The MCP server is the connector that lets Claude communicate with NextDNS in a controlled way. It makes it possible for Claude to read DNS logs, review filters and prepare settings changes. The server uses only the permissions the organisation grants, so it does not expose the whole account by default.
Is connecting NextDNS to Claude secure?
Security depends on how the connection is set up. We use the API key that NextDNS supports, apply least-privilege access, require approval for consequential actions and keep audit logs. These controls help keep people in charge, though no setup can remove every risk, so we review them with your team.
What can Claude do with NextDNS once connected?
Typically, Claude can review DNS logs, summarise blocked and allowed activity, identify unusual patterns, prepare blocklist updates and suggest privacy setting adjustments. Each change can be routed for approval before it takes effect, depending on the workflow you choose.
How long does setup take?
A simple connection to one NextDNS profile can often be set up within days. Larger workflows that involve several systems, approval routes and team training usually take a few weeks. The free automation audit gives you a clearer timeline for your situation.
Which plan or permissions do I need?
You need an API key from your NextDNS account, and the permissions it carries should match the actions your workflow requires. Requirements can vary with your account setup, so we confirm access during the free audit and recommend the narrowest permissions that still support your goals.