# Andrew Bialecki (slim)

> Andrew Bialecki is co-founder and co-CEO. Klaviyo API + MCP on Anchor Terminal, with grades, an about and public profiles.

- Full: https://www.anchorterminal.com/people/andrew-bialecki/index.md (~750 tokens) · this version ~480 tokens · JSON https://www.anchorterminal.com/people/andrew-bialecki/index.json · canonical https://www.anchorterminal.com/people/andrew-bialecki/
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-27
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Co-founder and co-CEO.

Andrew Bialecki co-founded Klaviyo with Ed Hallen and is its co-CEO.

- LinkedIn: https://www.linkedin.com/in/bialecki/

## What Andrew builds

- [Klaviyo API + MCP](https://www.anchorterminal.com/tools/klaviyo.md), graded BB, 71.8/100, in Lifecycle marketing & customer engagement. Klaviyo is a marketing platform that holds customer profiles and events and sends email, SMS, WhatsApp and push campaigns and flows. Agents reach it through a JSON:API REST API and an official hosted MCP server. Co-founder and co-CEO, researched 2026-10-26.

## Works with

- [Ed Hallen](https://www.anchorterminal.com/people/ed-hallen/), Co-founder and Chief Strategy Officer

## Questions

### Who is Andrew Bialecki?

Andrew Bialecki co-founded Klaviyo with Ed Hallen and is its co-CEO.

### What does Klaviyo, Inc. make?

Anchor Terminal lists Klaviyo API + MCP from Klaviyo, Inc..

### How are Andrew's tools graded?

Klaviyo API + MCP is graded BB, 71.8 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://www.klaviyo.com/uk/about
- https://www.linkedin.com/in/bialecki/
- https://www.linkedin.com/in/edhallen/
- https://www.klaviyo.com/uk/
- https://www.klaviyo.com/uk/contact-us

These are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched.