Why we ship AI agent security on-premise only

Cyron AI Security has no cloud edition, and that is a decision. To protect an agent's traffic, a product has to read tool arguments, credentials and internal records in full. We decided that reading belongs on the customer's own servers.

So Cyron AI Security runs on your infrastructure: on its own as a gateway, or inside Cyron On-Premise. Here is the reasoning, one field at a time.

What is inside one tool call

An AI agent reaches its tools over the Model Context Protocol. One exchange looks simple: the agent lists the tools, calls one and reads the response. The MCP specification defines each message. Now look at what those messages carry.

Field in a typical MCP exchangeWhat it carriesWhat it can expose
Tool listThe name, description and input schema of every tool a server offersA map of the internal systems your agents can reach, and how to drive them
Server addressWhere each tool server livesInternal host names and the shape of your network
Authorisation headerThe credential the agent presents to the tool serverA live token for that server
Session identifierWhich conversation a call belongs toWho is working on what, and when
Tool nameThe action the agent is takingWhich systems are in use, and for which task
Tool argumentsThe agent's input to the toolCustomer identifiers, search terms, file paths and, too often, secrets in tool arguments: cloud keys, tokens, private keys
Tool responseWhat the tool sends backInternal records: customer data, documents, tickets, source code
Error messageWhy a call failedInternal paths, versions and stack traces

Every row is something a security product must read to do its job. A leaked key sits in the arguments. A planted instruction sits in the response. A poisoned description sits in the tool list. Agent security cannot inspect the envelope and skip the letter.

Why does Cyron AI Security have no cloud edition?

Because protecting an agent means reading its tool arguments, credentials and internal records in full. A cloud edition would copy all of that to a vendor. So Cyron AI Security runs on your infrastructure: the reading happens where the data already lives, and nothing leaves your network.

Think about what a cloud service would have to do with the table above. It would receive a copy of every exchange. It would hold your agents' credentials in transit, your internal records in its analysis and your tool map in its logs. And it would keep enough of each exchange to explain a verdict, because a verdict nobody can explain is not evidence.

Redaction does not solve this: to remove a secret, something has to see it first. A hybrid design does not solve it either. A sensor in your network that ships traffic to a vendor cloud still moves the data.

Why “it stays inside” shortens the security review

Every security review of a new tool opens with the same questions. Where does the data go? Who processes it? What happens when the contract ends? When the answer is “it stays inside”, most of those questions close early.

Regulation points the same way. Under DORA, a security tool that receives your traffic in a vendor's cloud becomes an ICT third-party service. That brings an entry in the register of information, an exit plan and a concentration check. Running it on your own servers keeps that work much simpler. In India, the Reserve Bank of India's outsourcing directions count cloud and managed security services as outsourcing. Licensed security software a bank runs itself is a purchase.

None of this makes a rule go away. It removes a dependency you would otherwise have to document, assess and defend, and your evidence stays in your jurisdiction.

Buyers already think this way. Gartner expects that by 2027, 30% of organisations will require sovereignty over their cloud security controls. Forrester found that 66% of European cloud decision-makers say sovereignty fully determines their choice of provider.

That is what sovereign AI security means to me. The analysis of your AI systems runs where your data lives, under your control. Sovereign AI for enterprise teams cannot stop at where the model runs. The layer that reads your agents' traffic has to be sovereign too.

What it takes to run on-premise

A host, and a way to carry updates in.

Cyron AI Security installs on a Linux host with a container runtime inside your network. It needs no GPU. The installer verifies checksums, loads images offline and creates its keys on site. Run it twice and nothing breaks.

Updates arrive the same way. New threat definitions and rules come as signed, encrypted bundles. Each upgrade backs up your evidence, checks that every finding survived and rolls back if anything fails. The licence is a signed file issued for your deployment, so nothing has to call home to keep it valid.

You choose the role. Run it as a gateway in front of your MCP and A2A servers, where it refuses a malicious call before the tool is reached. Or run it inside Cyron On-Premise. There, iris, the eBPF kernel agent, captures agent traffic with no change to your agents, and the source is blocked at the kernel.

Where a service still makes sense

I am not against the cloud. For API traffic, a service is the quickest way to judge a detection engine. Cyron API Security has a free SaaS plan, hosted in Germany, with no card and no time limit.

That plan already sees agents. It recognises MCP and A2A traffic and protects MCP at the API layer. Agent-layer analysis, the part that reads every argument and response in full, comes with Cyron AI Security on your own servers.

So the path is simple. Judge the engine free in the cloud. Bring the agent layer, and anything regulated, onto your own infrastructure. From free in the cloud to fully air-gapped on your servers.

The principles we hold to

These are the commitments behind Cyron AI Security. Ask the same of any product that wants to read your agents' traffic.

  • No call-home. Cyron AI Security never contacts us. It is licensed by a signed file and runs fully air-gapped.
  • Signed offline updates. Threat definitions and rules arrive as signed, encrypted bundles. You decide when they come in.
  • Your evidence stays yours. Findings live in your own databases, and credentials seen in traffic are never written to disk.
  • Verdicts you can reproduce. Detection is deterministic. The same exchange always gets the same verdict, and every verdict can be explained.

Sources

Cyron is built by Cyron Intelligence, the cybersecurity product development division of LogicSense Technologies Private Limited, founded by Shreyans Bhatt.

If your agents call internal tools and their traffic cannot leave your network, we will set up an evaluation on your own servers. Tell us which MCP servers and agents you run.

Request an on-premise evaluation