Field notes. John Arndt, Soxoa. Published .
The one-pager says one thing. The press document uses last month's price. The content calendar promises a feature that was still a draft when someone copied it. Every asset looks finished, and the campaign disagrees with itself.
This is usually a source-control problem before it is a copywriting problem. A useful marketing kit starts with a dated record of what the product does, what the offer includes, and what evidence supports the claims. Every adaptation should carry those boundaries forward.
The build-marketing-kit draft Claude skill comes from a four-brand package completed in August 2026. That work included 16 PDFs covering brand guides, one-pagers, press material, and content calendars. Its verification record documents rendering and visual inspection of all 76 PDF pages, with corrections and rerenders. It also included editable sources and media assets.
Those checks describe the August package. They do not establish that its prices, positioning, or product behavior remain current today. The new skill packages the method and still needs testing in Claude.
Give every important claim a source
The first input is a truth sheet: audience, problem, supported behavior, current offer, evidence, limitations, and intended call to action. Brand assets and design rules come alongside it. A previous campaign can help explain a product, but it should not silently outrank current product evidence.
For material assertions, keep a claim register. Record the wording, source, observation window, definition, and permitted use. Metrics also need a denominator. An internal test, a public-source field test, a synthetic check, and a customer result each support different statements.
A press kit needs particular care. Proposed founder quotes are useful writing drafts, but they remain drafts until the spokesperson approves them. Formatting a sentence inside quotation marks does not create an interview.
Adapt the format while keeping the promise stable
The one-pager explains the buyer problem, mechanism, evidence, limit, and next step. The brand guide makes the voice and visual choices usable by another person. The press sheet gives a writer accurate facts and potential angles. The calendar turns those ideas into concrete assignments.
An illustrative example: a fictional document tool extracts invoice headers into a review screen. Its one-pager should explain that review step. The press facts should preserve it. Calendar entries should show the review workflow instead of implying that the tool autonomously approves payments.
The phrasing can change by channel. The underlying authority should stay the same.
Give each calendar row a subject, format, evidence asset, owner, call to action, and review status. Choose a cadence the team can actually produce. Thirty rows of lightly rewritten promotion are an inventory problem waiting to happen.
The export is part of the work
Editable copy is necessary, but someone eventually opens the PDF. Render the finished documents and inspect the actual pages at readable size. Look for clipped text, dense tables, inconsistent approval labels, stale links, and claims that changed between the source and export.
Keep the editable source with the delivery files and a short manifest. It should say which version was reviewed, what checks were performed, and what remains unresolved. “Text reviewed” and “every exported page inspected” describe different work.
A sample request:
“Use build-marketing-kit for this product launch. Create a one-pager, press facts, draft founder quotes, and a four-week calendar from the attached truth sheet and brand guide. Flag every claim needing fresh evidence, and record which exported pages you inspect.”
The available document tools determine which exports Claude can produce and verify. If rendering is unavailable, the skill should say that the visual check remains open. It should never invent a verification record to make the delivery look complete.
Before publishing, recheck the facts that change: price, offer, capabilities, destination links, and permissions. A kit request alone does not schedule posts, buy media, approve quotes, or authorize distribution.
Start with one offer and one audience. The useful test is whether someone else can pick up the package and publish accurate material without reconstructing the product from your chat history.
Get the skill
build-marketing-kit is part of the free Soxoa Ops plugin for Claude. In Claude Code, add the marketplace with /plugin marketplace add johnarndt/soxoa-claude-plugins, then run /plugin install soxoa-ops@soxoa-plugins. You can read the skill on GitHub before installing it, or copy its folder into ~/.claude/skills/.