# Andrew Firestone (slim)

> Andrew Firestone is CEO; joined after company formation. Mermaid Chart MCP on Anchor Terminal, with grades, an about and public profiles.

- Full: https://www.anchorterminal.com/people/andrew-firestone/index.md (~750 tokens) · this version ~580 tokens · JSON https://www.anchorterminal.com/people/andrew-firestone/index.json · canonical https://www.anchorterminal.com/people/andrew-firestone/
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-28
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

CEO; joined after company formation.

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

## What Andrew builds

- [Mermaid Chart MCP](https://www.anchorterminal.com/tools/mermaid-chart.md), graded F, 31.6/100, in Diagramming. Hosted MCP server for Mermaid diagrams from mermaid.ai. CEO; joined after company formation, researched 2026-10-27.

## Works with

- [Knut Sveidqvist](https://www.anchorterminal.com/people/knut-sveidqvist/), Founder and CTO; Mermaid.js creator

## Backed by

- [Microsoft](https://www.anchorterminal.com/investors/microsoft/)
- [Streamlined Ventures](https://www.anchorterminal.com/investors/streamlined-ventures/)
- [Sequoia Capital](https://www.anchorterminal.com/investors/sequoia-capital/)
- [Open Core Ventures](https://www.anchorterminal.com/investors/open-core-ventures/)

## Questions

### Who is Andrew Firestone?

Andrew Firestone is CEO; joined after company formation.

### What does Mermaid Chart make?

Anchor Terminal lists Mermaid Chart MCP from Mermaid Chart.

### Who has invested in Mermaid Chart?

The sources our research read name Microsoft, Streamlined Ventures, Sequoia Capital and Open Core Ventures.

### How are Andrew's tools graded?

Mermaid Chart MCP is graded F, 31.6 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://mermaid.ai/open-source/ecosystem/mermaid-chart.html
- https://opencoreventures.com/blog/mermaid-chart-from-open-source-project-to-raising-a-7-5m-seed-round
- https://se.linkedin.com/in/knut-sveidqvist
- https://x.com/knutsveidqvist
- https://www.linkedin.com/in/arfirestone
- https://mermaid.ai/
- https://mermaid.ai
- https://mermaid.ai/contact-us
- https://mermaid-25331.zendesk.com/hc/en-us/requests/new
- https://mermaid.ai/community/

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.