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typpo

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Funding Links: https://github.com/sponsors/typpo

GitHub Sponsors Profile

My open source work
promptfoo is a CLI & package for setting up evals & testing LLM outputs.
QuickChart is an API for rendering chart images and QR codes. I host it as a free web service that generates 60 million charts per month.
Spacekit is a Javascript library for building science-based 3D space visualizations. It's used in many popular open source projects of mine, which in turn are used in school curricula and by media to help teach science:

Ancient Earth - see 750M years of Earth's history (7.2M visits since creation)
Meteor Showers - understand how meteor showers work (2.7M visits since creation)
Asterank - go-to reference for asteroid mining info! (nearly 1M visitors)

Textbelt is an API for outgoing SMS. I've built an open-source version that uses email-to-SMS gateways so people can send SMS for free.
The CA Property Tax Map project is a map that visualizes the effects of Prop 13 by scraping residential and commercial real estate taxes from California counties.
I also publish a handful of helper libraries such as j2000 (date conversion tool for astronomical calculations) and gmaps-url-signer.
The plan for Promptfoo

Provide a great open-source entrypoint for LLM evaluation, prompt testing, and basic LLM Ops
Increase public understanding of the importance of structured, iterative, and evidence-based prompt "engineering"

The plan for QuickChart

Improve stability and extend testing
Add new rendering capabilities (e.g. math formulas, more advanced PDF layout, Apex charts(?), Google Image Charts compatible syntax)
Expand the free tier (which is already pretty generous)
Continue to provide support for self-hosted deployments

The plan for Spacekit

Make Spacekit visualizations more immersive and flexible: e.g. add a tweening system to enable scripted movement between objects, raytracing to occlude labels properly, ability to support user interactions and clicks
Add more data on exoplanets, stars, and galaxies
Create a full solar system demo, then a full universe demo
Improve the API to make it easier for people to connect Spacekit with THREE.js code
Extend custom shadowing (e.g. rings should cast shadows onto planets!)
Improve performance

The plan for Textbelt

Create a comprehensive guide for self-hosting and installation
Publish a parameterized Docker image so users don't need to go into the codebase
Refresh the list of providers and break down the /intl endpoint to specific countries to improve reliability

The plan for CA Property Tax Map

Add more counties!
Figure out ways to slice data in interesting ways. For example, residential vs commercial, rental vs owned.
Obtain other data such as square footage, estimated home value, etc.

Featured Works

typpo/textbelt

Free API for outgoing SMS

Language: JavaScript - Stars: 3067
typpo/quickchart

Chart image and QR code web API

Language: JavaScript - Stars: 1682
typpo/spacekit

Javascript library for 3D space visualizations

Language: JavaScript - Stars: 527

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