# Matt Vagni (slim)

> Matt Vagni is co-founder and CTO of Plain. Plain API + MCP on Anchor Terminal, with grades, an about and public profiles.

- Full: https://www.anchorterminal.com/people/matt-vagni/index.md (~600 tokens) · this version ~480 tokens · JSON https://www.anchorterminal.com/people/matt-vagni/index.json · canonical https://www.anchorterminal.com/people/matt-vagni/
- 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)

Co-founder and CTO, Plain.

- LinkedIn: https://www.linkedin.com/in/mathias-vagni/

## What Matt builds

- [Plain API + MCP](https://www.anchorterminal.com/tools/plain.md), graded B, 65.5/100, in Customer support & helpdesk. API-first B2B support platform. Co-founder and CTO, Plain, researched 2026-10-28.

## Works with

- [Simon Rohrbach](https://www.anchorterminal.com/people/simon-rohrbach/), Co-founder and CEO, Plain

## Backed by

- [Battery Ventures](https://www.anchorterminal.com/investors/battery-ventures/)
- [Index Ventures](https://www.anchorterminal.com/investors/index-ventures/)
- [Connect Ventures](https://www.anchorterminal.com/investors/connect-ventures/)

## Questions

### Who is Matt Vagni?

Matt Vagni is co-founder and CTO of Plain.

### What does Plain make?

Anchor Terminal lists Plain API + MCP from Plain.

### Who has invested in Plain?

The sources our research read name Battery Ventures, Index Ventures and Connect Ventures.

### How are Matt's tools graded?

Plain API + MCP is graded B, 65.5 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://www.plain.com/
- https://www.plain.com/blog
- https://www.plain.com/authors/simon-rohrbach
- https://www.plain.com/authors/matt-vagni

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.