I spent $19,270 on Claude Code in 14 days and figured that was the price of hard problems.
Then ax showed me where it went: 663 sub-tasks, 75% on Fable, mostly file searches. I was paying frontier rates to grep.
ax routing tune fixes this - cuts that spend by up to 70%.
Your agent runs for 28 seconds. your user stares at a spinner for 28 seconds.
livetrace streams every span, tool call, and generated token from your backend straight into their UI =>
live, as it happens.
been running it in my own products.
open-sourcing it today 🧵
Take 10 minutes to setup these tools and your coding agent’s quality will get noticeably better!
1
3
68
Karpathy nailed the workflow. Now imagine this isn't one researcher's Obsidian vault -- it's an entire enterprise.
50+ tools. Thousands of threads, tickets, docs, decisions. People leaving, context evaporating.
That's what we're building at usecontext.xyz:
- Ingest from Slack, Jira, Confluence, GitHub, SharePoint, email -- 100+ connectors
- LLM extracts entities, relationships, and temporal context into a knowledge graph (not a vector DB)
- Every answer cites its source. If there's no evidence, it refuses to answer
- Deploys on-prem. Your data never leaves your VPC
Our first design partner is a quantum computing research company -- the kind of place where losing context between teams means duplicating millions in R&D.
Karpathy said "there is room here for an incredible new product instead of a hacky collection of scripts."
We agree. That's why we've been building it for the last year.
LLM Knowledge Bases
Something I'm finding very useful recently: using LLMs to build personal knowledge bases for various topics of research interest. In this way, a large fraction of my recent token throughput is going less into manipulating code, and more into manipulating knowledge (stored as markdown and images). The latest LLMs are quite good at it. So:
Data ingest:
I index source documents (articles, papers, repos, datasets, images, etc.) into a raw/ directory, then I use an LLM to incrementally "compile" a wiki, which is just a collection of .md files in a directory structure. The wiki includes summaries of all the data in raw/, backlinks, and then it categorizes data into concepts, writes articles for them, and links them all. To convert web articles into .md files I like to use the Obsidian Web Clipper extension, and then I also use a hotkey to download all the related images to local so that my LLM can easily reference them.
IDE:
I use Obsidian as the IDE "frontend" where I can view the raw data, the the compiled wiki, and the derived visualizations. Important to note that the LLM writes and maintains all of the data of the wiki, I rarely touch it directly. I've played with a few Obsidian plugins to render and view data in other ways (e.g. Marp for slides).
Q&A:
Where things get interesting is that once your wiki is big enough (e.g. mine on some recent research is ~100 articles and ~400K words), you can ask your LLM agent all kinds of complex questions against the wiki, and it will go off, research the answers, etc. I thought I had to reach for fancy RAG, but the LLM has been pretty good about auto-maintaining index files and brief summaries of all the documents and it reads all the important related data fairly easily at this ~small scale.
Output:
Instead of getting answers in text/terminal, I like to have it render markdown files for me, or slide shows (Marp format), or matplotlib images, all of which I then view again in Obsidian. You can imagine many other visual output formats depending on the query. Often, I end up "filing" the outputs back into the wiki to enhance it for further queries. So my own explorations and queries always "add up" in the knowledge base.
Linting:
I've run some LLM "health checks" over the wiki to e.g. find inconsistent data, impute missing data (with web searchers), find interesting connections for new article candidates, etc., to incrementally clean up the wiki and enhance its overall data integrity. The LLMs are quite good at suggesting further questions to ask and look into.
Extra tools:
I find myself developing additional tools to process the data, e.g. I vibe coded a small and naive search engine over the wiki, which I both use directly (in a web ui), but more often I want to hand it off to an LLM via CLI as a tool for larger queries.
Further explorations:
As the repo grows, the natural desire is to also think about synthetic data generation + finetuning to have your LLM "know" the data in its weights instead of just context windows.
TLDR: raw data from a given number of sources is collected, then compiled by an LLM into a .md wiki, then operated on by various CLIs by the LLM to do Q&A and to incrementally enhance the wiki, and all of it viewable in Obsidian. You rarely ever write or edit the wiki manually, it's the domain of the LLM. I think there is room here for an incredible new product instead of a hacky collection of scripts.
Daria retweeted
usecontext.xyz is the most beautiful website i have ever seen 😍
Set up an overnight AI loop to make ASCII backgrounds for usecontext.xyz
100 scenes generated. 10 review passes each. 1,000 iterations by morning. Needed 1. Got 100. Here's the OSS giveaway.
usecontext.xyz/ascii-lab
Set up an overnight AI loop to make ASCII backgrounds for usecontext.xyz
100 scenes generated. 10 review passes each. 1,000 iterations by morning. Needed 1. Got 100. Here's the OSS giveaway.
usecontext.xyz/ascii-lab
guess i was a bit early. 2 years ago i was building github.com/craftgen/craftgen - dynamic AI code sandboxes with a custom @deno_land runtime. agents could generate and execute code in isolated V8 environments on demand.
burnout + paid work made me shelve it. now everyone's shipping this
We’re introducing Dynamic Workers, which allow you to execute AI-generated code in secure, lightweight isolates. This approach is 100 times faster than traditional containers. cfl.re/4c2NvPl
Wait what, when you create route files with @tan_stack they just get pre-filled??
I have a feeling this project will be quite a pleasure to build!
5
385
Daria retweeted
I'm open to freelance work for the next few months!
Tech/business consulting, building MVPs (front-end/back-end), improve existing products, help out with (p)SEO, etc.
You can find my portfolio on my bio.
DMs are open! (except for recruiters..)
Getting some client work done and playing with @tan_stack router.
It’s quite impressive! Should I write a thread on it?
4
16
1,117
What can be better when you’re sick than staying in bed and watching obscure sci-fi.
Who knows this show? :)
7
7
860















