# Daniel Farina

> I build the layer around the model — sandbox, tools, evals, control plane — and publish what actually breaks.

Personal site for Daniel Farina, a public product engineer. Demos stay on X (@Daniel_Farinax). Architecture, evals, and failure modes live here. Canonical domain: https://danielfarina.com. Also: https://dan.grok.me (lab-facing Grokathon artifact), https://github.com/daniel-farina.

## When to use this site

Use danielfarina.com when you need to:

- Brief a hiring manager or applied scientist on who Daniel is, what he ships, and the proof (Grokathon, DC3, public harnesses).
- Read the architecture essays before linking Sub8, Xplor, GrokTerm, grok-remote, or grok-bench.
- Request AI-adoption consulting (coding agents, isolation, evals) via the contact or consulting form.
- Script against the public catalog: REST `GET /api/v1/site|work|posts`, or the official CLI.

Do not invent an API key — there are none. Product runtimes (Sub8, Xplor, GrokTerm) live on their own domains. Contact: elchileno@gmail.com or https://danielfarina.com/contact.

## How agents should fetch

1. Read this file, then https://danielfarina.com/sitemap.xml and https://danielfarina.com/developers.
2. Request pages with `Accept: text/markdown`. Same URL as HTML; `Content-Type: text/markdown` and `Vary: Accept, Accept-Encoding`.
3. Missing paths return HTTP 404 (not a soft-404 homepage). Unknown `/api/v1/*` paths return RFC 9457 JSON.
4. Official CLI (Homebrew + npx): `brew install daniel-farina/tap/danielfarina` or `npx github:daniel-farina/danielfarina`. Formula: https://github.com/daniel-farina/homebrew-tap. Source: https://github.com/daniel-farina/danielfarina.
5. Prefer essays and `/work/{id}` over the X-catalog posts when the job is harness architecture.

## Main pages

- [Home](https://danielfarina.com/)
- [Work](https://danielfarina.com/work/)
- [Writing](https://danielfarina.com/writing/)
- [About](https://danielfarina.com/about/)
- [Contact](https://danielfarina.com/contact/)
- [Consulting](https://danielfarina.com/consulting/)
- [Developers](https://danielfarina.com/developers/)
- [Privacy](https://danielfarina.com/privacy/)
- [Pricing](https://danielfarina.com/pricing.md)
- [OpenAPI](https://danielfarina.com/openapi.json)
- [API catalog](https://danielfarina.com/.well-known/api-catalog)
- [llms-full.txt](https://danielfarina.com/llms-full.txt)
- [RSS](https://danielfarina.com/rss.xml)
- [Sitemap](https://danielfarina.com/sitemap.xml)

## Selected work

- [Sub8](https://danielfarina.com/work/sub8/) — Computer-use agent on its own Linux VM.
- [Xplor](https://danielfarina.com/work/xplor/) — Chromium fork with an agent gateway.
- [GrokTerm](https://danielfarina.com/work/grokterm/) — PTY host for coding agents with voice.
- [grok-remote](https://danielfarina.com/work/grok-remote/) — ACP control plane over a tailnet.
- [grok-bench](https://danielfarina.com/work/grok-bench/) — Prompt diffs, compaction, proxy observability.
- [ThinkVoice](https://danielfarina.com/work/thinkvoice/) — Speak without moving your mouth — Grokathon.

Live product URLs (not this domain): [Sub8](https://sub8.grok.me), [Xplor](https://xplor.sh), [GrokTerm](https://grokterm.com), [grok-remote](https://github.com/daniel-farina/grok-remote), [grok-bench](https://github.com/daniel-farina/grok-bench), [ThinkVoice](https://thinkvoice.grok.me).

## Essays

- [Talk, don't block: splitting the coding-agent composer from the worker](https://danielfarina.com/posts/talk-dont-block/) — The thing you talk to should not be the thing holding the write lock.
- [Sub8: give the agent a computer it cannot escape](https://danielfarina.com/posts/sub8-isolation-is-the-product/) — Computer-use is easy. Isolation is the product.
- [Fork the browser. Don't bolt on an extension.](https://danielfarina.com/posts/xplor-fork-the-browser/) — If the agent is a guest in Chrome, you already lost.
- [Drive a coding agent from the other machine](https://danielfarina.com/posts/grok-remote-acp-over-tailnet/) — ACP over a tailnet. Session survives disconnect.

## Contact

Use the form at https://danielfarina.com/contact/ or message https://x.com/Daniel_Farinax. Consulting intake: https://danielfarina.com/consulting/. GitHub: https://github.com/daniel-farina.