Platform / ChatGPT

Your attribution data,
inside ChatGPT.

Add Cometly to ChatGPT and ask about your marketing in plain language. Answers come from your own Cometly account: revenue by source, attribution models side by side, and the journey behind any customer.

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ChatGPT setup guide

Added as a custom connector in ChatGPT's Developer mode. A Cometly account is required to connect.

ChatGPT

Cometly connected

Compare attribution models for last month's revenue.

Used Cometlyquery_attribution_models

Source	First touch	Last touch	Linear
Google Ads	$58,200	$71,760	$64,900
Meta Ads	$79,300	$64,740	$70,100
LinkedIn Ads	$33,040	$34,040	$35,540

Meta starts more journeys than it closes: it earns $14,560 more under first touch than last touch. Google is the opposite, picking up the final click.

Setup

Connected in four steps

Turn on Developer mode
In ChatGPT, open Settings > Apps & Connectors > Advanced settings and turn on Developer mode.
Create the connector
Choose Create, name it Cometly, paste the MCP server URL below, and set Authentication to OAuth.
Choose your Spaces
ChatGPT sends you to the Cometly consent screen. Pick all your Spaces or specific ones, set a default, and approve.
Ask
Start a new chat, enable Cometly from the tools menu, and ask about your ads.

MCP server URL

https://app.cometly.com/mcp/chatgpt

On ChatGPT Business, Enterprise, or Edu, a workspace admin opens Plugins > Add custom MCP server, enters the same URL with OAuth, and publishes it for the team. Members then enable it from the tools menu in a chat. OpenAI sets these menus and changes them over time, so check the full guide if yours looks different.

Examples

What to ask Cometly in ChatGPT

Plain language is enough. ChatGPT picks the right Cometly tool, runs it against your account, and answers with your numbers.

“Show my purchase volume by source for the last 7 days.”
“What was my ROAS by source last month?”
“Compare first-touch, last-touch, and linear attribution for last quarter's revenue.”
“List contacts created this week where Customer Plan is Premium.”
“Which campaigns spent the most this month without hitting my target ROAS?”

Capabilities

What ChatGPT can do with Cometly

Ad performance

ROAS, CPA, spend, and conversions by source, campaign, ad set, or ad, with period-over-period comparison.

Attribution models

Run the same question across attribution models and see how credit shifts between channels.

Customer journeys

Pull the timeline of touchpoints and conversions behind any contact or company.

Events and revenue

List, count, and sum conversion events, from first lead to purchase.

Reports and dashboards

Find your saved reports and dashboards, run them, and get an AI summary of the result.

Tracking health

Check pixel status and connected integrations, and trace why an event is not showing up.

Good to know

Cometly's tools are read-only, apart from three that correct a single contact, company, or event record. Nothing can create or delete data or change attribution.
Access follows your Cometly role. Viewers connect read-only, and removing someone from a Space ends their access to it.
You choose which Spaces a connection can reach, and can revoke it any time in Cometly under Settings > Integrations > MCP.
Use GPT-5 or a newer model. Smaller models occasionally invent tool calls.
It is built for analysis, not bulk export. Use CSV export or the Cometly API for large data pulls.
AI summaries of saved reports use your Cometly AI credits.

Read the full guide

FAQ

Cometly in ChatGPT: common questions

How the connection works, what it can reach, and who on your team can use it.

Talk to sales

How do I add Cometly to ChatGPT?

In ChatGPT, open Settings > Apps & Connectors > Advanced settings and turn on Developer mode. Choose Create, name the connector Cometly, paste https://app.cometly.com/mcp/chatgpt, and set Authentication to OAuth. Approve the Spaces it can reach on the Cometly consent screen, then ask in a new chat.

Which ChatGPT plans can use it?

Individual accounts add Cometly through Developer mode. On Business, Enterprise, and Edu, a workspace admin adds it under Plugins > Add custom MCP server and publishes it for the team. Which plans include custom connectors, and where the setting lives, is set by OpenAI and changes over time.

Can ChatGPT change my campaigns or my data?

It cannot touch your campaigns. Cometly's tools are read-only apart from three that correct a single contact, company, or event record, and no tool can create or delete data or change attribution. A read-only connection does not get those three tools at all.

What data can ChatGPT see?

Only the Spaces you approve on the consent screen, and only what your own Cometly role allows: ad metrics, events, contacts, companies, saved reports, and dashboards. Every call is checked against your membership and role.

Which model should I use?

GPT-5 or newer. Smaller models occasionally invent tool calls instead of running the real one.

How do I disconnect it?

Remove Cometly from ChatGPT's connectors screen, or open Settings > Integrations > MCP in Cometly, find the connection in the token list, and choose Revoke.

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