Build Your GTM Agent OS with Claude Opus 4.8 Ultra Code

A GTM Agent OS is a single dashboard that gives you a real-time view of everything relevant to your GTM operation: competitor activity, content signals, campaign performance, social stats, and your most-used Claude skills. Built once with Ultra Code in a single afternoon. Runs continuously without babysitting.

What it is

A command centre that your agents populate and update automatically

Why GTM engineers specifically

GTM work is high-context, multi-source, and time-sensitive

What goes in a GTM Agent OS

Five modules that cover the full GTM operation

Before running Ultra Code on any build, use Plan Mode to create a detailed execution plan and save it as a markdown file. This is the step most people skip, and it is the step that determines whether Ultra Code produces something useful or something that needs significant rework.

What Plan Mode does

Read-only exploration mode. Claude thinks before it builds.

How to write the planning prompt for a GTM Agent OS

Give Claude the goal, the modules you want, and ask it to surface questions

What Claude asks and how to answer

Four categories of questions Claude will surface

Save the plan before touching Ultra Code

Ask Claude to save the plan as a markdown file. This becomes the execution brief for Ultra Code.

With a saved plan.md file, switching to Ultra Code and executing the build is a single step. Claude reads the plan, activates dynamic workflows, and builds the entire OS while you do something else. This page covers exactly how to make that switch and what to expect.

Switching from Plan Mode to Ultra Code

Three steps: clear the chat, switch the model, activate Ultra Code

The execution prompt

One sentence. Point Claude at the plan file and let Ultra Code do the rest.

Adding your design system

If you have brand files, drop them in before executing

The cost and token reality

Ultra Code is the most token-intensive way to use Claude. Size the task accordingly.

After the first build, Claude will have produced a working version of your OS. This page covers what the first pass typically looks like, what is worth fixing immediately, and how to use Ultra Code again to refine it without starting over.

What the first pass usually looks like

Working, but visually flat and missing some data connections

Refinements worth making in a second pass

Visual hierarchy, data connections, and embedded terminal

How to run the refinement pass

Same approach: describe the changes, activate Ultra Code, let it run

A GTM Agent OS is a billable client deliverable. This page covers how to scope it, price it, and build client-specific versions efficiently using the same architecture you built for yourself.

Why the Agent OS is a client deliverable

Every GTM team needs a command centre. Most have never been offered one.

How to scope a client OS build

Three things to establish before scoping: data sources, skills, and visual brand

Building the client version efficiently

Start from your own OS as the architectural reference

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