# Tomas Pfister

> Tomas Pfister is harness² co-author; Head of AI Research at Google Cloud. Harness² on Anchor Terminal, with grades, an about and public profiles.

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- Markdown: https://www.anchorterminal.com/people/tomas-pfister/index.md (~650 tokens)
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- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-27

Harness² co-author; Head of AI Research, Google Cloud.

- X: https://x.com/tomaspfister

## What Tomas builds

- [Harness²](https://www.anchorterminal.com/tools/harness2.md), graded E, 42/100, in Agent harnesses. Harness² is Google Research's open-source Python framework that has an editor model rewrite an agent's harness (prompts, guardrails, memory, tools, skills, subagents, scripts and plugins) for each task and keeps lessons for later tasks, with model weights fixed. Harness² co-author; Head of AI Research, Google Cloud, researched 2026-10-27.

## Works with

- [Ruiyao Xu](https://www.anchorterminal.com/people/ruiyao-xu/), First author, Harness²

## Questions

### Who is Tomas Pfister?

Tomas Pfister is harness² co-author; Head of AI Research at Google Cloud.

### What does Google (Google Research) make?

Anchor Terminal lists Harness² from Google (Google Research). Harness² is Google Research's open-source Python framework that has an editor model rewrite an agent's harness (prompts, guardrails, memory, tools, skills, subagents, scripts and plugins) for each task and keeps lessons for later tasks, with model weights fixed.

### How are Tomas's tools graded?

Harness² is graded E, 42 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://harness2.github.io
- https://github.com/google-research/harness2
- https://x.com/tomaspfister
- https://x.com/Google

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. They don't work for Anchor Terminal (our own team is on the about page, /about/#author). We show public roles, public profiles and what the listing pages show, nothing private. To correct something, send an about or a photo, or have a page removed, write to privacy@anchorterminal.com.

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