A new category for AI startups

Know what every customer actually costs you

Founders can see what each customer pays them, but not what each customer costs them. Track every variable cost per customer before a bad quarter forces the conversation.

Problem

Revenue is visible. Customer cost is not.

Most startup dashboards track growth, not cost-to-serve by customer. That blind spot hides margin risk until it is expensive.

See the full cost stack, not one bill

Infrastructure is no longer the dominant variable cost. Service usage, payment fees, support load, and acquisition spend are the lines that move your margin.

$npx marginsight connect events

Connecting event stream...

Mapping customer IDs...

Linking provider usage data...

Building margin model...

✓ Customer-level costs are now visible

Cloud spend is not the whole story

Your AWS bill can look flat while a single customer silently drives service and support costs higher every week.

tracking-sdk.ts

import { MarginSight } from '@marginsight/browser';

MarginSight.init({ apiKey: process.env.NEXT_PUBLIC_MARGINSIGHT_KEY! });

MarginSight.identify(customer.id);

MarginSight.track('variable_cost_incurred', { provider: 'payments', amountUsd: 0.42 });

MarginSight.track('revenue_recorded', { amountUsd: 29 });

Averages hide unprofitable customers

Blended margins make healthy cohorts look fine while power users or edge-case segments burn cash in the background.

Integrated with the top variable cost providers

Stripe

Plaid

OpenAI

Anthropic

Google Ads

Meta Ads

SendGrid

Pinecone

Built for per-customer attribution from day one

Track variable cost where it happens, tie it to who triggered it, and expose margin in real time for every account.

How attribution works

Plan, search

Ingest usage + billing streams

Bring together product events, provider usage, and invoice lines so every cost item has customer context.

Get real-time margin visibility

Watch contribution margin shift by account, plan, and cohort as usage changes, before monthly close.

Outcome

Move from spend panic to margin control.

Find who is profitable, who is at risk, and where to intervene on pricing, limits, or product behavior.

What founders use it for every week

Turn cost visibility into operating decisions across pricing, packaging, and go-to-market.

Unify every variable cost source

Bring service usage, payment fees, support load, and acquisition spend into one customer-level cost graph.

See where margin leaks actually happen

Track margin by cohort, plan, and geography so you can intervene before losses compound.

How It Works

Track. Attribute. Decide faster.

A practical flow for teams that need customer-level margin in days, not quarters.

Map costs per customer

Connect your cost data streams

Start with billing exports, provider invoices, and event streams so every cost line has customer context.

Map costs per customer

Map costs to customer IDs

Join service usage, payments, support, and acquisition data into one per-customer cost ledger.

Map costs per customer

Query margin and take action

Run plain-language margin checks, flag unprofitable accounts, and ship pricing or guardrail updates fast.

Connect your cost data streams

Start with billing exports, provider invoices, and event streams so every cost line has customer context.

Map costs to customer IDs

Join service usage, payments, support, and acquisition data into one per-customer cost ledger.

Query margin and take action

Run plain-language margin checks, flag unprofitable accounts, and ship pricing or guardrail updates fast.

See which customers drive margin and which drive burn

Modern startups do not have an infrastructure problem. They have a per-customer cost problem. Start tracking it now.