# Investigates before it interrupts

> Cousteau investigates product changes across events, logs, customer data, and code. Find what changed, why, and who is affected. Built on Altertable.

Cousteau NEW



What changed. Why. Who is affected. Cousteau investigates across product events, logs, customer data, and code — then brings you the evidence.

[Start for free](/sign-up) [Explore the platform →](/product/lakehouse.md)

Quick setup. Insights delivered automatically.

Example Cousteau finding: checkout completion dropped 11% after release 2.41, affecting 83 accounts on Safari. Payment timeout traces link the failed sessions to changed code.

Your existing stack

## The event. The error. The account. The connection.

Cousteau follows a product change across your connected sources to find what happened and who is affected.

### Product events

Conversion, usage, customer journeys

### Logs and traces

Errors along the customer’s path

### Customer data

The accounts and plans affected

### Deploys and code

The release and the changed path

One investigation across your connected data

Start with any one source. Add others when you need more context.

From live data to investigated findings

## Connect your first source. Cousteau takes it from there.

Start with one source. Add more over time to give Cousteau more context.

Product analytics Real-time

1.0K events/s

Logs Real-time

5.0K logs/s

Traces Real-time

10.0K spans/s

Production read replica Federated

Postgres, MySQL, MongoDB, …

Business context GitHub

Repos, code, markdown, …

AI-native data platform

events

logs

accounts

Cousteau’s finding

### Checkout completion dropped 11%.

**83** accounts affected

Safari users on annual plans are seeing payment timeouts after the latest release.

Failed sessions match timeout traces in the changed payment code.

Ingest events, logs, and traces in real time. Investigate across billions of rows.

From signal to finding

## Why did checkout drop after the release?

Cousteau compares cohorts, follows failed sessions, and inspects the changed code.

cousteau / checkout

QUERY

Compare completion by release, browser, and plan.

JOIN

Connect failed sessions to traces and customer accounts.

SCAN

Find PaymentIntentTimeout errors around the deploy.

MATCH

Trace the failing path to code changed in release 2.41.

Events → Traces → Accounts → Code

The finding

### Checkout completion dropped 11%.

**83**accounts affected

**Safari**users on annual plans

Failed sessions show a sharp increase in `PaymentIntentTimeout` traces. The affected path maps to commit `abc123`.

Product knowledge

## The next investigation starts with context.

Product definitions, important workflows, and previous findings stay available for the next question.

Your terminology

Your workflows

Previous investigations

Built on Altertable’s shared definitions and permissions. Your own agents can access the same data and business context through MCP.

Definition

### Checkout completion

A successful payment, measured from checkout started to payment confirmed.

Workflow

Create intent → Confirm payment → Activate plan

Previous finding

### Release 2.41 / Safari

Payment timeouts on annual plans. Keep the affected cohort and changed code in context.

THE FOUNDATION UNDER COUSTEAU

## Altertable. The AI-native data platform.

Start with product investigations. Use the same live data and shared context for SQL, BI, applications, and your own agents.

[Explore the platform](/product/lakehouse.md)

## Explore the rest of the platform

More workloads on the same engine, governance, and pricing.

[![Lakehouse](/assets/illus/product/duckdb-lakehouse-schematic.png)](/product/lakehouse.md)

#### [Lakehouse](/product/lakehouse.md)

[Query live data across systems with DuckDB-powered execution, open storage, and predictable economics. Build on one context lakehouse instead of another warehouse-centered stack.](/product/lakehouse.md)

[![Self-serve BI](/assets/illus/product/explore-self-serve-bi.png)](/product/self-serve-bi.md)

#### [Self-serve BI](/product/self-serve-bi.md)

[Give every team live dashboards, shared metrics, and agent-assisted exploration on the same governed data foundation.](/product/self-serve-bi.md)

START WITH ONE WORKFLOW

## What changed in your product?

Bring a customer journey you need to understand. See how Cousteau can investigate it across the systems you already use.

[Request a Cousteau demo](/contact-us.md)

[Web version](https://altertable.ai/product/cousteau)