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MCP server for attribution

Signups are easy to count and customers are what matter. With attribution over MCP, the agent can tell you which source produced paying customers and then pull up what those customers asked for, in the same conversation.

Get an API key → Attribution API overview

Things to ask

  • Which waitlist source produced paying customers last month?
  • Was the Product Hunt launch worth it?
  • Who referred the most people who ended up paying?
  • Which campaign converts best, and what did those customers ask for?

One call, start to finish

You type: “Which source produced paying customers in the last 30 days?” The agent calls get_attribution_report with:

{
  "group_by": "referrer",
  "period_days": 30
}

Returned to the agent: One row per source with signups, confirmed, invited, paying, ever paid and the signup-to-paying rate, plus current MRR and collected revenue per currency, and whether Stripe is connected.

Tools and arguments

get_attribution_report

Read-only

See which signup sources produce paying customers

group_byoptional"referrer" | "utm_source" | "utm_campaign" | "referral_code"
period_daysoptionalnumber, 1–3,650
limitoptionalnumber, 1–100

add_channel_cost

Indie and Builder

Record what a marketing channel cost

source_typerequired"utm_source" | "utm_campaign" | "referrer"
sourcerequiredstring, max 255
period_startrequiredstring
period_endrequiredstring
amountrequirednumber, 0–1,000,000,000
currencyrequiredstring, max 3
noteoptionalstring, max 300

list_channel_costs

Read-onlyIndie and Builder

List recorded marketing spend

No arguments.

delete_channel_cost

Confirms firstIndie and Builder

Remove a recorded spend entry

cost_idrequiredstring, max 64

Behaviour worth knowing

  • It only covers people who signed up through a Launch waitlist form, page or widget. The tool description tells the agent to say so and not to present it as page analytics.
  • The agent is told not to rank sources by conversion rate when a source has only a handful of signups.
  • Without Stripe connected the funnel still works; paying is zero and the result explains why.
  • Grouping by referring site is on Indie. Grouping by UTM source, UTM campaign and referral code is on Builder.

Questions

How does the agent go from a source to what those customers asked for?
Three calls: get_attribution_report for the source, list_contacts filtered by that source and paying, then get_contact for each person's feedback.
Does this need a script on my site?
No. The source is recorded on the signup by the waitlist form you already use, with no cookie.