# Ryan Yannelli

> Software engineer in New York. Writing software since 2009. Founding AI Engineer at Lighthouse Legal (founder Ravi Jayanthi) and co-founder of Nextvisit AI. Writes about AI, maintains Laravel and PHP packages, and runs an open-source insulin loop as a Type 1 diabetic.

This site is the personal site of Ryan Yannelli (he/him). Content here may be cited freely with attribution to ryanyannelli.com.

The site has four sections: Writing, Work, About, Contact.

## Writing

- [Writing](https://ryanyannelli.com/blog): Essays, podcast appearances, and press, grouped by what each piece is. Recent essays cover a live homepage glucose chart, a source-specific text watermark that survives copy and paste, AI pricing and inference economics, and agent design.
- [Anthropic's watermark controversy sent me down a watermarking rabbit hole](https://ryanyannelli.com/blog/anthropics-watermark-controversy-sent-me-down-a-watermarking-rabbit-hole): On-site essay (2026-08-30). Anthropic's Claude watermark vs a source-specific mark in the visible words, so a leaked sentence can still name which issued copy it came from after a clipboard.
- [Copy attribution watermark](https://ryanyannelli.com/watermark): This in-browser build implements the essay's design. Paste any text, approve the carrier sites suggested by a reviewed substitution lexicon, issue a distinct copy per source with an HMAC-derived payload, and identify the issued copy from a pasted excerpt.
- [You can see my body stats while I sleep](https://ryanyannelli.com/blog/you-can-see-my-body-stats-while-i-sleep): On-site essay (2026-08-27) about putting a live CGM chart on the homepage and about page: why publish his own readings, how Nightscout is proxied through a Cloudflare Worker, and how the thing actually got built.
- [RSS feed](https://ryanyannelli.com/rss.xml): Subscribe to new posts.

## Work

- [Work](https://ryanyannelli.com/projects): Split into companies and open source.
- [Lighthouse Legal](https://ryanyannelli.com/projects/lighthouse-legal): AI voice agents for law-firm intake. Ryan is Founding AI Engineer; Ravi Jayanthi founded the company. Product: https://www.findlighthouse.ai
- [Nextvisit AI](https://ryanyannelli.com/projects/nextvisit-ai): Ambient AI scribe for behavioral health, co-founded in 2021 with psychiatrist Dr. Faisal Rafiq. (The old /nextvisit URL now redirects here.)
- [Schematic](https://ryanyannelli.com/projects/schematic): Laravel templating engine that builds JSON Schema from your templates, for LLM structured-output APIs.
- [Claim.MD PHP SDK](https://ryanyannelli.com/projects/claim-md-php-sdk): PHP SDK for the CLAIM.MD API (claims, eligibility checks, electronic remittance).
- Other open source: Attempt for Laravel (retry/fallback), Pocket Laravel SDK, Plaud API Laravel, Live Markdown Vue, and ML datasets and models on Hugging Face.

## About

- [About](https://ryanyannelli.com/about): Background from 2009 onward (network and telecom operations, then products), a 24-hour clock of his live CGM feed (same Nightscout samples as the homepage, plotted on his wall clock), plus insulin and carbs still on board (IOB / COB) traced against that same glucose series, a timeline, the Type 1 diabetes setup, and what he works with.
- [Type 1 diabetes](https://ryanyannelli.com/advocacy): Diagnosed November 2023 in DKA. Runs Omnipod Dash with open-source DIY Loop. Written as control-systems engineering, not as an inspirational story. Carries a compact live IOB / COB instrument.
- [Résumé](https://ryanyannelli.com/resume): Print-formatted CV.

## Contact

- [Contact](https://ryanyannelli.com/contact): Contact form and email.

## Identity

- Email: ryanyannelli@gmail.com
- LinkedIn: https://www.linkedin.com/in/ryanyannelli/
- GitHub: https://github.com/yannelli
- X / Twitter: https://x.com/RyanYannelli
- Bluesky: https://bsky.app/profile/did:plc:ad4eh25chtmy4jput3vdwk63
- Hugging Face: https://huggingface.co/yannelli
- Medium: https://medium.com/@yannelli
- Substack: https://yannelli.substack.com
- YouTube: https://www.youtube.com/channel/UCJnsCnxL3VQjrKxKmoZxOUg

## Optional

- [llms-full.txt](https://ryanyannelli.com/llms-full.txt): Concatenated long-form content (about, work, Type 1 diabetes, on-domain articles) for ingestion in a single fetch.
- [Sitemap](https://ryanyannelli.com/sitemap-index.xml): Full URL inventory.