AI Agent Frontdoor series, Part 5 of 6
At A Glance
- Each vendor wants its own integration and its own connector, so the same work repeats per agent.
- Frontdoor gives each system one stable hostname that every vendor’s agent calls.
- The agent uses the credential the vendor already supports, so nothing changes on the vendor’s side.
- Your MCP server stays as it is, reached through one pattern instead of rebuilt for each vendor.
In this series
The prior post covered how the security architect approves one access pattern for every agent. This post is for the teams who own what the agents actually call: the APIs and MCP servers. You are the ones asked to make each new agent work, and today that means doing similar integration work again for every vendor the business signs.
The integration treadmill
Each vendor arrives with its own expectations. One wants a connector deployed, another a specific network path, another a bespoke authentication setup for its agent to reach your service. The underlying system is the same, the tool the agent calls is the same, and you rebuild the plumbing anyway because each vendor defines the connection in its own way. Multiply that across coding agents, service agents, and process agents, and the integration work never settles. It is the same job, repeated, with a different vendor’s name on it.
A stable hostname, nothing rebuilt
NetFoundry Frontdoor gives each internal system a single, stable hostname. Every vendor’s agent calls that same hostname, and the Frontdoor handles authentication, authorization, and routing behind it. You expose one name per system, once, rather than standing up a new path for each vendor. When the next agent arrives, there is no new integration to build, because it uses the pattern that is already there.
The credential the vendor already uses
The agent connects with the credential the vendor already supports. You are not asking the vendor to adopt a new auth scheme, and you are not writing a shim to translate one. The vendor’s side stays exactly as it ships, which removes the back-and-forth that usually stalls an integration and the custom code you would otherwise maintain forever. The connection works with what the agent already presents, and Frontdoor decides what it may reach.
Your MCP server stays as it is
If the agent calls an MCP server you run, that server does not change. Frontdoor sits in front of it and authorizes each request per identity, per service, and per MCP tool, so you get fine-grained control without modifying the server to provide it. You keep the MCP server you built, and you gain per-tool policy over who may call what, enforced outside the server rather than coded into it.
One pattern for every vendor
The result is one integration pattern instead of a growing pile of vendor-specific ones. A new agent is onboarded by authorizing an identity against an existing hostname, not by rebuilding access. Your team stops being the place where every AI initiative slows down, and the systems you own stay unmodified and unexposed. The final post looks at the person waiting on all of this: the program owner who bought the agent to get something done.
Read the rest of the series
Prior: Approve the Pattern Once, the security architect’s view.
Next: From Speed Bump to Road Closed, the program owner’s view.
Frequently Asked Questions
Do we have to change our MCP server or API?
No. Frontdoor sits in front of the server and enforces policy per tool, so the server itself stays as you built it.
What credential does the agent use?
The one the vendor already supports. Frontdoor works with what the agent presents, so the vendor’s integration does not change.
How is a new vendor onboarded?
You authorize an identity against the existing hostname for the system. There is no new integration to build for each vendor.
Can two vendors’ agents reach the same system safely?
Yes. Each runs under its own identity and policy against the same hostname, with per-tool authorization and separate records for each.
