Klaviyo in ChatGPT

Klaviyo is connected once in Adrails, under Integrations, by pasting a private API key created in Klaviyo as a Read-Only Key. Adrails reads daily totals for your campaigns and flows, messages received, opened and clicked, unsubscribes, and the revenue Klaviyo attributes to its own sends, and ChatGPT reaches the same data through the MCP server, with your sign-in and inside the one workspace you chose.

In ChatGPT, the Klaviyo reads come from 4 tools: metrics_daily, business_review, integrations_status and workflows_preview. The table above says what each one returns and gives a question to type as it is. Every result comes back twice, as exact data for the model and as a readable table for you, so a figure ChatGPT states can be traced to the call that produced it.

ChatGPT adds remote MCP servers through Developer mode, which depends on your ChatGPT plan and your workspace's policy. The server is added once, then enabled in the conversations where you want it, and ChatGPT's app settings let you switch individual tools off and refresh the list from the server.

Every client uses the same server URL, https://adrails.ai/api/mcp, and the same sign-in: ChatGPT registers itself, you sign in to Adrails, then choose the workspace and the permissions on the consent screen. Klaviyo needs nothing on the ChatGPT side, since it is already connected in that workspace under Integrations.

• 1. In ChatGPT Settings, turn on Developer mode
• 2. Open Plugins and add a custom MCP server named Adrails, with https://adrails.ai/api/mcp as its URL and OAuth as its authentication
• 3. Sign in to Adrails, choose the workspace and the permissions, and choose Allow access
• 4. Review the tools ChatGPT discovered, then add Adrails to a new conversation

Ask in your own words: ChatGPT picks the tool, Adrails returns the figures, and ChatGPT's model does the reasoning, so a tool call uses no agent credit. Each result carries the exact data in structuredContent.result and the same figures as readable tables.

A result is at most 256,000 bytes, so a long history is asked for in shorter ranges or pages. metrics_daily, business_review, integrations_status and workflows_preview are the tools ChatGPT reaches for; the table above shows what each returns.

• How many emails went out last week, and how many were opened and clicked?
• What revenue does Klaviyo attribute to its sends this month, next to what Meta attributes?
• Does my blended revenue note count Klaviyo revenue and Meta revenue twice?

No tool writes to Klaviyo. Adrails never writes to Klaviyo: it sends no message, edits no flow and works from a read-only key. The write permissions the consent screen can offer concern ad accounts, integrations, automations, Knowledge and campaign drafts, and none of them reaches Klaviyo.

Each source and currency stays separate in every result: a Klaviyo figure is never added to a Shopify, Stripe or Meta Ads one, never converted, and always named with its source, so ChatGPT can set them side by side but cannot blur them into one total.

A read covers the whole workspace, every ad account and integration it has, and never another workspace. Klaviyo data arrives as daily totals for campaigns and flows, never as individual recipients, so ChatGPT sees counts and revenue, not people.

Read workspace data, the one permission every connection needs, covers every integration of the workspace, Klaviyo included. No write permission exists for Klaviyo, so a member and an owner read the same data, and ChatGPT lists no tool that could change it.

Klaviyo is read every 6 hours, as daily totals for your campaigns and flows. Klaviyo attributes revenue to its own sends, so its figure and the revenue Meta attributes are two measurements, never one total.

Calls on one connection run one at a time, at most 60 a minute per access token, and a connection works in the one workspace you chose at consent: to work in another, connect ChatGPT again and choose it. Revoke ChatGPT under Your connections on the MCP page in Adrails; removing the server in ChatGPT does not revoke it there.