Coding agents write services. They cannot see the runtime they create.
WhosePort is the runtime engineer beside them: it knows what is running on a developer's machine, why something broke, and how to fix it safely.
The gap opened fast. An agent can scaffold a Next.js app, an Elysia API, a Postgres container and a Redis cache in a minute. Then port 3000 is "in use", the API returns 502, and neither the agent nor the developer can say what is actually listening, which process started it, or which config line disagrees with reality.
Observability platforms were built for production. OS tools show sockets and PIDs without meaning. Nothing understood a local environment as a system: ports mapped to processes, processes to projects, projects to containers and dependencies.
WhosePort builds that map deterministically, keeps it live, and lets a bounded investigation loop reason over it. Read-only by default. Approval for anything that changes your machine. Verified before it is called done.
- Not a general-purpose coding agent.
- Not an unrestricted DevOps agent with a shell.
- Not a production incident responder.
- Not a chat assistant that happens to know your ports.
Six rules every feature has to pass
Never diagnose from one error string when more evidence can be collected. Every claim cites the fact it rests on.
If code can know a fact more reliably than a model, code answers. The model reasons across facts; it does not invent them.
The agent runs on your machine. Only normalized, redacted evidence leaves it, and only if you connect the cloud.
A remediation is a typed plan with a target, an operation, an expected effect, a risk and, where it applies, how to undo it. Nothing hidden.
A command returning is not a fix. A port listening, an HTTP 200 and a reachable dependency are.
Coding agents are first-class users. The MCP server gives them the same read-only inspection and diagnosis tools, from day one.
Ready to know what is running?
One command to install. Read-only until you say otherwise.
Environment graph, investigation history and approvals for everyone in your organization. Free during early access.
See pricingOne MCP config line for Claude Code, Cursor or any MCP client. Read-only tools, so it can look but never change anything.