Claude Code for Marketing: Run Ads and SEO for Your Vibe-Coded App (2026)

What can Claude Code actually do for marketing?

A marketing SaaS sees one layer of your funnel. An agent working inside your repository touches three at once: the ad platform's API, the codebase that serves your pages, and the analysis loop between them. That's the whole argument for using Claude Code as your first marketing hire — not that it knows marketing, but that it can operate every surface marketing happens on.

The wiring: connect Claude Code to your Google Ads account

The connection is a plain OAuth integration — no middleware, no paid connector, no MCP server required. The Google Ads API itself is free; what gates you is your developer token's access level (developers.google.com, checked 2026-07-15): a fresh token starts at Test Account Access — 15,000 operations a day against test accounts only. Explorer level runs 2,880 operations a day against production accounts, and Basic Access raises that to 15,000 a day after an application Google says is typically reviewed within 5 business days.

Two honesty notes before the steps. The console part is thirty to sixty minutes of real clicking, not the five minutes tutorials promise. And secrets live in .env with the agent explicitly told never to commit it — an ads-account token in a public repo is a very expensive mistake.

1. 01Create a Google Ads Manager account and copy the developer token from its API Center.
2. 02In Google Cloud Console: new project, enable the Google Ads API, set up the OAuth consent screen, create a desktop-app OAuth client, and download credentials.json into your project folder.
3. 03Put the developer token in .env, drop credentials.json next to it, and tell Claude Code to read both and complete the Google Ads authentication flow. It scripts the OAuth dance and stores the refresh token.
4. 04From here on, campaign creation, ad generation, and search-term reports are prompts.

Loop 1 — paid: one intent, one ad, one page

The strategy worth automating is message match: the exact phrase someone searched shows up as the ad's first headline and again as the landing page H1. Google lets you pin a headline to position 1 for exactly this — its own docs note pinning can lower your Ad Strength grade, and that's a trade worth taking, because relevance to the searcher beats Google's rubric. Done by hand, one-page-per-search-intent is unaffordable. An agent that writes both the ads and the pages makes it a batch job: feed it a keyword list, get an ad group and a matching page per intent.

The settings and hygiene worth dictating

Location targeting defaults to "Presence or interest", which also reaches people merely interested in your target area; switch to "Presence" if you sell somewhere specific (both option names verified against Google Ads help, 2026-07-15). Keep a fresh account on plain Search campaigns first — attribution is legible, and you can read exactly which query triggered which click before you let Google's more automated formats spend for you.

Negative keywords are where the agent earns its keep weekly. Google supports account-level negative keywords (up to 1,000) plus shared lists (up to 5,000 keywords each, 20 lists per account). The agent move: have Claude pull the search-term report through the API and, for every ambiguous query, actually search it and read the results before classifying — a query that looks relevant can turn out to be job hunters or DIY tutorials. It proposes the exclusions with reasons; you approve; it pushes.

Close the tracking loop before scaling spend: install the Google tag and verify it fires. And if you sell offline or by invoice, note a fresh change most tutorials miss — since June 15, 2026, offline conversion imports are blocked in the Google Ads API and live in Google's Data Manager API instead (support.google.com, checked 2026-07-15). Point Claude at the current docs, not last year's video.

One more mechanical detail that bites: an ad whose final URL 404s gets disapproved. Deploy the landing pages first, then create ads — or create ads with the homepage as a placeholder and have the agent swap in the real URLs after deploy.

1. "Read setup.md and credentials.json, complete the Google Ads
   authentication flow, and keep all secrets in .env — never commit it."

2. "Here's keywords.csv (exported from Keyword Planner). For each
   intent: create a Search campaign with Presence-only targeting,
   one ad group, one responsive search ad with the root phrase
   pinned to headline 1, and a landing page in /landing/<slug>
   whose H1 is that exact phrase. Show me the full plan before
   creating anything."

3. "Pull the last 30 days of search terms. For any query you can't
   classify, search it and read the results. Propose negatives
   grouped by reason and wait for my approval, then add them to
   the shared negative list."

Loop 2 — organic: pages from data, not vibes

The organic loop is the same shape with a longer clock, and the human step comes first: keywords. Claude Code cannot see search volumes. Keyword Planner is free with an ads account (volumes are rounded), any paid SEO tool is sharper, and an agent asked to just "find keywords" will invent plausible-looking phrases with zero demand. Export a CSV; that file is the loop's fuel.

Then the agent takes over: one static page per intent — statically generated, interlinked, written against your voice files rather than default model prose. Cap the batch. Dozens of pages that each answer a real query beat thousands of thin permutations, which is how sites get de-indexed rather than ranked. The full site-level version of this play is in our guide to doing SEO with Claude Code.

Voice files are the cheapest anti-slop mechanism we know: paste your own posts and emails into the repo as reference files — tone.md, vocabulary.md, beliefs.md — and reference them in every content prompt. The model stops writing like a model and starts writing like the person who feeds it.

For technical SEO the loop is almost comically direct: run Lighthouse in Chrome DevTools, copy the entire report, and paste it into Claude Code with "fix these". Re-run, repeat. The agent reads a raw audit more patiently than any human skims one.

Ads first or SEO first?

The honest heuristic: ads buy signal, SEO compounds. If you need to know this week whether anyone wants the thing, and you can fund a few hundred dollars of clicks, run the paid loop — you'll have real search terms and conversion data in days. If there's no click budget, or your product's queries are ones people will still be typing next year, start the organic loop and let it stack. The loops share parts either way: paid landing pages become organic pages, and the paid search-term report is the best keyword research you'll ever get without paying for a tool.

Bottle the loop into skills

Everything above runs as one-off prompts first. The compounding step is packaging: Claude Code skills are markdown instruction files invoked as slash commands (code.claude.com/docs, checked 2026-07-15). Run the ads workflow once by hand, then have Claude write /generate-ads and /new-page skills from the session — each with a log file so it never duplicates a keyword. Hooks add guardrails, like blocking any push that contains .env. A weekly scheduled run — "audit the account, propose changes, touch nothing" — turns Monday-morning optimization into reading a report over coffee.

What Claude Code can't do for your marketing

It doesn't know search volumes. That data lives in Keyword Planner and SEO tools, and any volume number an LLM produces from memory is fiction wearing a confident face.

It doesn't own consequences. The ad account, the policy strikes, the budget — yours. That's the real reason every prompt in this playbook ends with an approval gate: the agent proposes, you dispose.

And it can't fix a product nobody wants. If the perfectly message-matched page converts nobody, that's signal about the offer, not the automation. The good news is that finding out is nearly free: Claude's Pro plan at $17–20 a month includes Claude Code (claude.com/pricing, 2026-07-15), the Google Ads API costs nothing, and Keyword Planner costs nothing — the marketing loop's fixed cost is a subscription plus whatever you choose to spend on clicks.