Arthur Katcher
Harness Engineer // building agentic infra and chasing the singularity // 1x Acquired • CTO @ Qoris
Europe (CET) · remote1K+ followers on X · 3,500+ GitHub contributions in the last year
AK

About

I'm a harness and agent infrastructure engineer with 5 years of experience and 1 bootstrapped startup exit. As co-founder and CTO of Qoris I built the platform for production AI agents 0-to-1, now used by operations teams in US marketing and manufacturing.

Before that I founded SalesGet, an AI sales agent that qualified leads into $750K+ of sales opportunities in two months, then sold the company after fielding 24 NDA-signed buyers. Claude Certified Architect, with merged contributions to OpenClaw and Firecrawl. DMs open for advisory & builds.

Work Experience

Skills

Python
TypeScript
Claude Code
OpenAI Agents SDK
MCP
Cursor
AWS Bedrock
Docker
FastAPI
Postgres
Redis
React
Next.js
Linux

Certification

Open Source
GitHubGitHub

desktop-use

computer-use agent with a mission-control console: live VNC, replay, intervention

GitHubGitHub

explainer-video

agent skills for explainer videos made entirely in code: 2D motion graphics or narrated 3D

GitHubGitHub

google-maps-mcp

places, directions and geocoding for any MCP client

GitHubGitHub

knox

security plugin that guards Claude Code sessions

GitHubGitHub

agentparts

terminal UI components for agent harnesses: turn status, approval prompts, harness shell

GitHubGitHub

meta-mcp-manager

one retrieval-first endpoint for many MCP servers

GitHubGitHub

grok-delegate

Grok Build plugin: hand work to Claude Code or Codex as a background task

GitHubGitHub

jev-realm-of-iron

Jev plays Realm of Iron, a Warcraft II-style RTS written from scratch: one typed decision every game second

Merged PRs into OpenClaw's plugin registry (9K stars) and H Company's computer-use CLI; found a scraping bug in Firecrawl's Python SDK (158K stars) and proposed a fix, which got accepted.

Contact

Talk harness with me

30 minutes. Tell me what you run and where it breaks.

book a call

DMs open for advisory & builds. DM on X

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GitHub