Reads are free. Plans count writes.

Answered plainly.

What counts as a write?

A successful tool call that changes something in a connected source: a product attribute in Merchant Center, an ad or an asset in Google Ads, a page in Shopware, a price, a refund. Reads — reports, products, orders, rankings, spend — never count, on any plan. A batch counts one write per item it changes. Calls that fail or are refused by validation do not count. datavessel's own tools — reports, memory, schedules — never count.

What happens when the writes are used up?

Writes pause until the month resets, you add a pack, or you move to a bigger plan; reads keep running. Nothing is deleted. Your agent gets a clear answer naming the plan and the reset date, so it can tell you instead of failing silently.

Can I buy more writes without changing plan?

Yes. A pack of 500 writes is $25, on any plan including Free. Pack writes are used only after the month's allowance, they carry over, and they never expire. A pack costs more per write than any plan, so for steady use a plan is the better deal; packs are for the spike and the occasional month. Packs are sold by card; accounts billed through Shopify get more writes by changing plan in Shopify.

How many stores can I connect?

As many as you run, on every plan. Plans count writes, not stores. Each store keeps its own linked accounts — Merchant Center, Google Ads, GA4, Search Console, Tag Manager — and its own change record, and an agent working on one store can only reach that store's accounts.

Do scheduled agents count?

Every write a scheduled agent makes counts like any other write; there is no separate limit on schedules and they run on every plan, Free included, on your own AI key.

Are there any other limits?

Only a fair-use guardrail so nobody can take the platform down: a ceiling on calls per minute, set well above normal use. There is no cap on reads, runs or stores. If you ever get near it, we'll talk before anything stops.

How do I pay if I installed from the Shopify App Store?

Through Shopify. App Store installs are billed entirely via Shopify's own billing — you pick a plan on the Shopify-hosted plan page, the charge appears on your normal Shopify invoice, and upgrades, downgrades and cancellation are self-serve in your Shopify admin. Same plans, same prices, 14-day free trial included. Everyone else — WooCommerce, Shopware, or a direct signup here — subscribes by card through our checkout.

Do I pay anything for the AI?

When you use datavessel from Claude, ChatGPT, Codex or n8n, the model is already yours and nothing changes. For agents we run for you on a schedule, you connect an Anthropic, OpenAI or Gemini key and pay the provider directly — we never mark up or resell tokens. Set a spend limit in the provider's console for the first month and you will have a real number within weeks.

What happens when my trial ends?

The 14-day trial runs the full Business plan — no credit card required. When it ends, your account soft-lands on Free: reads stay unlimited, you keep 50 writes a month, and your schedules keep running within it. Nothing is deleted.

Can an agent change my shop without me?

Every write goes through a typed tool that validates the input first. Claude, ChatGPT, Claude Code and Codex ask for your confirmation before a tool that writes; in a workflow with nobody to ask, you choose which write tools it may use. Creatives and pages are created paused or inactive. Every write is recorded per store with what changed and who confirmed it.