Productivity observability for coding agents | Backed by @DraperVC @StanfordUniversity
San Francisco, CA
Joined November 2024
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XTrace retweeted
A 34-minute guide on how a YC CTO actually uses AI every day
Zi Zhang is the co-founder and CTO of Proximitty, an AI operating system for commercial lending, backed by Y Combinator. Before that, he was a tech lead at Bloomberg and head of engineering at ACI dev, one of the first universal MCPs
We discuss:
🔸 His AI setup and AI spend
🔸 Two things he still won't hand to AI
🔸 Hiring: judgment beats execution
Listen now 👇
youtu.be/7I8J1fwYavE
btw this is free and OSS 🌟 github.com/XTraceAI/xtrace
Just dropped some big new features!
1. Automatically flag agent mistakes from your sessions
2. Diagnose flagged issues with 1 click
3. Leaderboard to show people your agent leverage score!
fyi this is free and OSS 🌟 github.com/XTraceAI/xtrace
XTrace retweeted
Your agent ran in a loop. Your agent didn't use the right file in the first place.
In 0.1.9, I added Session Warning that tells you where it can be optimized and how
Now released for macOS and open-source on Github
github.com/XTraceAI/xtrace-d… 🌟
XTrace retweeted
You can just grade your projects with your own skills!
My favorites are Comment hygiene and Subagent cost
Today we're launching XTrace, an open-source macOS app for people who code with agents.
See AI vs human time, API-equivalent spend, and insights on what to improve.
Add your own scoring skills or ones you discover.
Try it: github.com/XTraceAI/xtrace-d…
Know your productivity. Boost your productivity.
Today we're launching XTrace, an open-source macOS app for people who code with agents.
See AI vs human time, API-equivalent spend, and insights on what to improve.
Add your own scoring skills or ones you discover.
Try it: github.com/XTraceAI/xtrace-d…
Thank you everyone for coming today! We had a blast!
#SFTechWeek
What a night! Just finished my own #SFTechWeek panel event and it went amazing!
So many people came and some are even CEO of IPO companies or engineering managers who flied all the way from Asia or Europe to learn the trend of coding agent best practices.
XTrace retweeted
What a night! Just finished my own #SFTechWeek panel event and it went amazing!
So many people came and some are even CEO of IPO companies or engineering managers who flied all the way from Asia or Europe to learn the trend of coding agent best practices.
XTrace retweeted
wow my SF Tech Week event is super oversubscribed. The venue can only fit ~75 folks, but we have around 300 signups already!
dm me if you are on the waitlist but rlly want to join
This is the most insightful panel on coding agents for engineers, CTOs, and engineering managers during SF Tech Week 2026.
Next Thursday, Oct 8, I'm hosting: "Unlock the Full Power of Coding Agents: Software Engineering in the Agent Era"
Panelists:
- @austinywang (@cmux)
- Carrick Rogers (Saris AI)
- @felixmeng_ (@XTrace_ai )
What we'll cover:
- How tech leaders keep up with new agent tools that come out every day
- How to stop vibe coding from hurting your team's code quality
- How to keep your agents and your team aligned
Sign up: lnkd.in/geSJ8-tN
Full calendar: tech-week.com
@Techweek_ #SFTechWeek
XTrace retweeted
7/ Felix Meng — CEO of @XTrace_ai
“Beyond README.md: Teaching AI Agents from the Mistakes They Actually Make”
Felix will show how agent memory can live inside the harness—capturing real failures and corrections, then surfacing the right rule before the next risky action.
XTrace retweeted
Bookmark this paper from NVIDIA!
Ever added a skill to your agent and just... trusted it worked?
NVIDIA ran the numbers. The linters that check a skill's structure and style tell you almost nothing about how it does on real tasks (correlation 0.14).
What actually works: run the same task with and without the skill, and look at the difference. They did this 947 times. The skill helped in about 3 out of 4 runs. The other 1 in 4? Nothing, or worse.
arxiv link in comments:
XTrace retweeted
Hello world!
My old account algo was a mess so this is my new account!
Quick intro if you don't know who I am:
> Founder and CEO of XTrace
> Alum of Stanford and KCL
> prev. Mathworks and Sandia
> now live in SF
XTrace retweeted
Introducing Claude.md doctor
An agent skill that examines your CLAUDE.md / AGENTS.md, grades it and tells you how to FIX it
It even backtests your sessions to find the flaws that you can't tell just from the file
Free and open-source. Try it today with just 1 command:
npx skills add agent-clinic/claude-md-doctor
XTrace retweeted
𝗜 𝗯𝘂𝗶𝗹𝘁 𝗮 𝗱𝗼𝗰𝘁𝗼𝗿 𝘀𝗸𝗶𝗹𝗹 𝗳𝗼𝗿 𝗖𝗟𝗔𝗨𝗗𝗘.𝗺𝗱 𝗳𝗶𝗹𝗲𝘀
It backtests every rule against your own Claude Code session history and shows which ones actually get followed.
Ours graded a C, the loudest rule had 0% compliance.
try the skill: github.com/agent-clinic/clau…
