RayXC / San Francisco

The startup company of Raymond Xu.

I started RayXC in January 2026 as my startup company entity—the name that has tracked every pivot since. I build useful, occasionally weird products for people and AI agents along the way.

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Raymond Xu

Raymond XuFounder / Builder

About

Turning ideas into working software

Projects & experiments / 12

Recent
work.

01

Vibing

Visual coding / Waitlist

Vibe code visually. Video explainers that help you see what your code is doing.

 02

Odasher

AI inference / Research

Exploring faster, more economical inference for AI agents, from GPU benchmarks to long-context workloads.
03

Everyday
Economy Atlas

Interactive research

An interactive atlas of how people spend, work, and live, connecting economic data to questions worth building around.

04

Vocal

Health care navigation

A personal care navigator for making sense of medical records, research, and the next steps in complex health care.

 05

Redliner

Contract review / Prototype

Playbook-driven contract review with native Word tracked changes and plain-English comments explaining each edit.

 06

Talkshi

Agent marketplace

Product reviews by AI agents, for AI agents — Yelp for the agent internet.

 07

Cliff Center

AI infrastructure

A workspace for AI data center site readiness, from power and permits to predevelopment decisions.

 08

Raysurfer

AI workforce

Self-learning AI employees that learn a team's workflows and get better with use.

 09

Common Folders

Shared intelligence

A shared AI chat that learns from everybody talking to it.

 10

ShareSame

Web creation

Really, really fast vibe-coded websites.

 11

Convo Creator

AI experiment

A vibe-coded AI model you can talk to called “bruh.”

 12

Bum Ankle

Please help

An internet-native plea for assistance with Raymond's ankle.

The build log

The work,
over time.

Three years of building, from real-estate software to AI agents, infrastructure, and visual coding. The chapters change; the building keeps going.

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Previously / 2018–2026

Before RayXC.

The companies, products, and research I worked on before starting RayXC in January 2026.

Experience on LinkedIn ↗

  1. –

    Modern Realty

    Founder at Modern Realty · YC S24

    Built an AI home-buying agent handling texts, email, tour scheduling, and property research. Scaled to over $500k in total real-estate commission revenue. The company is now Mage Legal ↗.

  2. –

    Entori.io

    Founder

    Built an automatic summarizer for real-estate disclosure documents.

  3. –

    Vana

    Machine Learning Engineer

    Prototyped generative AI products with Stable Diffusion and optimized LoRA training for personalized models.

  4. –

    Google

    Machine Learning Software Engineer

    Google Assistant –

    Improved voice-command understanding on the NLP retrieval team through BERT embeddings and ML experiment pipelines.

    Document AI –

    Built entity-extraction models and ML infrastructure for forms and invoices, including spatial features, fine-tuning, and tokenization experiments.

  5. –

    Humanity Forward

    Team Lead & Acting Program Manager · Part-time

    Team Lead –

    Coordinated outreach to small businesses for petitions to local mayors.

    Acting Program Manager –

    Coordinated Humanity CALLS volunteers for voter outreach.

  6. –

    Denread

    Founder

    Built a web-research tool that surfaced potential sources and related content when you clicked a paragraph.

  7. –

    Antler

    Founder in Residence

    Developed an NLP product for text recommendations on websites during the founder residency in Brooklyn.

  8. –

    Johns Hopkins Applied Physics Laboratory

    Machine Learning Engineer

    Developed infrared detection, segmentation, and orientation models for small-drone navigation. Led low-light underwater imaging and depth research, and built annotation and data-augmentation tools.

Selected repositories

Open source.

All repositories ↗
GH / 01

AiAgenticStackTrace

Helps AI coding tools find the file that is currently executing.

TypeScript↗ GH / 02

claude-codemode

A blend of the Claude Code SDK with Cloudflare agent code mode.

Python↗ GH / 03

general-autoresearch

Autonomous code optimization using LLMs and any computable metric.

Python↗ GH / 04

rc

Personal zshrc and vimrc configuration for a fast terminal-first workflow.

Shell↗ GH / 05

pytest-depper

Smart test selection from AST-level code dependency analysis.

Python↗ GH / 06

cookbook

A working collection of examples, experiments, and useful recipes.

Notes + code↗
“Simplicity is an advantage but sadly complexity sells better.”