· XingAI Tech Blog
The Archive Was Already Written. It Just Was Not a Site.
This repo already had 88 English + 88 中文 posts. Last write: 2026-08-05. Public GitHub Markdown.
Engineering notes
How we shipdecision systems
Architecture, cache boundaries, MCP gates, and the boring production details behind XingAI products. Written for builders. English and 中文.
Bilingual
Every article ships in English and 中文.
Source in git
Markdown in a public repo. No CMS.
Not a funnel
These are build notes, not investor tips.
Latest posts
All posts →89 articles
· Invest AI · InvestSim · Robinhood MCP
Three Repos, One Paper-to-Draft Loop
Invest AI ranks and caches. InvestSim papers many sleeves. Robinhood MCP drafts orders under gates.
· Robinhood MCP
Evidence Before Draft: Robinhood MCP Now Reads InvestSim
ADR-008 gave the gateway an HTTP control plane. signalwatcher still drafted from Invest AI Top-1 alone while InvestSim evidence stayed "documented for later."
· InvestSim
Five More Paper Sleeves: InvestSim Tier-2.5 Without a New Signal Feed
After Tier-2 (ADR 0030), the next sleeves had to reuse Invest AI's ranking surface — not invent a parallel signal bus.
· XingAI Invest AI
Today Intelligence and the Report Surfaces That Stay Inside Invest AI
A draft "Daily Stock Market Intelligence" stack looked like a new FastAPI + Alembic + Next app. Invest AI already had Resend digests, report triggers, macro radar, and a reports…
· XingAI Invest AI
From Signal Events to Strategy Lab: Worker-Owned Paper Inside Invest AI
ADR-035 position-signal events
· XingAI Notification Platform
XNP Phase 2: A Modular Monolith That Boots With Nothing In It
Phase 1 shipped the architecture package: system design, ADRs 0001–0018, C4, contracts. The next temptation is SMS + templates + campaigns before the host can say no to a bad JWT.
· XingAI Invest AI
每日投资智报: Extend Invest AI, Do Not Spin Another Report Product
A dense Chinese A4 PDF framed around a $200K FI portfolio looks like a new product. New domain. New worker. New Resend project. Maybe a cute investment-report.xingai.app.
FAQ
- What is XingAI Tech Blog?
- A public archive of engineering posts from XingAI. It documents how products such as Invest AI, Research AI, and Robinhood MCP are built — architecture, ADRs, and production constraints.
- Where do I read the articles?
- Here at blog.xingai.app, or as Markdown in the public GitHub repo xingaiapp/xingai-tech-blog. Each topic has an English file and a 中文 file.
- Is this investment advice?
- No. Posts are engineering notes. Product outputs on invest.xingai.app are suggestions, not professional advice. Verify before you act.
- Which languages are supported?
- UI: English, 中文, 한국어. Articles: English and 中文. Korean article translations are not written yet.
- How is this licensed?
- Posts are CC BY 4.0. Code and site chrome are provided as-is. XingAI is not responsible for how you use the writing or the code.