I build open-source tools for coding agents, design automation, native software, and the Elixir ecosystem.

I’m interested in the part of AI-assisted development that comes after generation: how an agent inspects what it changed, understands a running system, finds the cause of a failure, and verifies that the result is actually correct.

That has led me to work across design tools, code intelligence, runtimes, native UI, build systems, deployment, replay, and developer tooling. The projects below approach different parts of the same problem.

OpenPencil is an AI-native, open-source design editor and Figma alternative built with Skia and WebGL. The aim is to make design documents understandable and editable as structured data—not just pixels on a canvas—so both people and agents can inspect and modify them. Website

figma-use brings that workflow to Figma. It gives agents a CLI for structural queries, JSX rendering, diffs, linting, analysis, patch workflows, exports, and round-tripping. Show HN · npm

Elixir Crab builds native applications that keep behavior, state, supervision, and public contracts in Elixir and use Rust only for bounded platform mechanics.

• gpui — declarative native desktop UI for Elixir/OTP: GPUI windows, HEEx-style views, native controls, deterministic test displays, and remote displays. Hex
• rustq — typed Rust and Rustler code generation from Elixir, with quasiquoting and ASTs, so NIF boundaries need no handwritten Rust. Hex

Under Elixir Vibe, I’m building Elixir-native tools that let coding agents work with the structure and runtime of a real codebase instead of treating source files as plain text — and, increasingly, tools for running and shipping the systems they produce.

Code intelligence:

• Vibe — an experimental BEAM-native coding agent runtime with a TUI, web UI, eval, memory, tools, and subagents.
• Reach — program-dependence graphs, call and data flow, effect analysis, and architecture checks for BEAM projects. Hex
• Exograph — structural Elixir code search built with ExAST, Reach, Ecto, and Postgres/ParadeDB. Hex
• ex_ast — AST-aware search, replacement, and structural diffs for Elixir. Hex
• ex_dna — AST-aware duplicate-code detection with extraction candidates. Hex
• ex_slop — Credo checks for recurring low-quality patterns in generated Elixir code. Hex
• program_facts — generated programs with known structural facts for testing static analyzers. Hex
• pi-elixir — BEAM runtime tools for the Pi coding agent: eval, documentation lookup, process state, Ecto queries, logs, and supervisor trees, connected to the running app via Tidewave.

Running and shipping systems:

• xamal — bare-metal deployment for Elixir releases over SSH, in the spirit of Kamal but with native releases and Caddy instead of Docker. Hex
• release_kit — OTP release tarballs with deployment-neutral artifact manifests. Hex
• host_kit — host infrastructure declared, planned, and controlled from Elixir. Hex
• gatehouse — OTP-native edge proxy and blue-green traffic switcher for Elixir deployments.
• llm_proxy — a self-hosted, Elixir-native alternative to LiteLLM: multi-provider routing, fallbacks, budgets, keys, and observability behind one API. Hex
• quackdb — remote DuckDB client for Elixir over the Quack protocol, on DBConnection with early Ecto support. Hex
• incant — Phoenix admin framework: resources, dashboards, datasets, actions, authorization, and service-owned remote admin surfaces. Hex
• safe_rpc — capability-scoped BEAM-native RPC over the Erlang external term format. Hex
• phoenix_replay — recording and replay for Phoenix LiveView sessions. Hex
• ttycast — seekable, compressed terminal recordings for BEAM applications. Hex

Elixir Volt explores what Phoenix frontend development looks like when more of the toolchain runs inside the BEAM.

• Volt — a frontend build tool and dev server for Phoenix with HMR, Tailwind CSS, and support for JavaScript, TypeScript, Vue, Svelte, React, and Solid. Hex
• Astral — a Volt-powered static site generator for Elixir applications. Hex
• QuickBEAM — a JavaScript runtime for the BEAM with browser-like APIs backed by OTP. Hex · Show HN
• Phoenix Vapor — Vue templates compiled into native %Phoenix.LiveView.Rendered{} structures. Hex
• OXC and Vize — Elixir bindings for JavaScript and Vue toolchains.
• Oxide — Elixir bindings for the Tailwind CSS toolchain. Hex
• npm_ex — an npm package manager for Elixir, so Volt projects resolve JavaScript dependencies without Node.js.
• xm — an Elixir DSL for building XML documents. Hex

• live_render — server-driven generative UI for Phoenix LiveView. Hex
• phoenix_streamdown — streaming Markdown for LiveView, designed for incremental LLM output. Hex

The larger thesis, architecture, roadmap, and open questions are documented in Building Blocks for the Future Web. It describes how these pieces might fit into a web stack where generated software can be inspected, replayed, traced, and checked.

• dot-pi — my extensions, skills, and working rules for Pi.
• sloplint — an AST-based, multilingual linter for low-quality generated-code patterns.
• agentfmt — token-efficient CLI formatting for tools consumed by language models.

My current work is mostly around agents and Elixir, but I’ve built open-source software across several ecosystems.

• phoenix_spec — OpenAPI 3.1 specifications generated from Phoenix JSON views and Ecto schemas. Hex
• json_spec — Elixir typespec syntax turned into JSON Schema at compile time. Hex
• phoenix_iconify and iconify — Iconify SVGs for Elixir, Phoenix, and LiveView. phoenix_iconify on Hex · iconify on Hex
• qqr — a pure-Elixir QR code encoder and decoder. Hex

• typespec_from_serializers — TypeSpec descriptions generated from JSON serializers. RubyGems
• arel_maniac — PostgreSQL features for ActiveRecord without raw SQL.

• Abiko Search — a search engine for Tor hidden services, built from scratch in Elixir. It included an Onion v3 implementation and a tor2web proxy. Product Hunt · Hacker News
• Natasha-Ex — Elixir ports of Russian NLP tools including Yargy, Slovnet, Morph RU, Razmetka, and Razdel.

• socks-nginx-module — SOCKS5 proxy support for nginx; referenced on the nginx wiki.
• lua-template — a minimal Lua templating engine adopted by Cloudflare Loom.
• Desktop-action support for Xfce’s core Garcon library — shipped with Xfce since version 0.6.0.

I’ve reported security issues through Google Bug Hunters, Bugcrowd, and CodePen’s bug bounty program.