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copyleftdev

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Note

I build sharp, single-purpose tools — mostly in Rust and Zig, sometimes in Go or Python. Security scanners, developer utilities, AI infrastructure, and the occasional absurd experiment. On GitHub since 2008. Everything ships.

gitmesh.app · don@codetestcode.io · linkedin


About

I'm a systems-level software engineer focused on security tooling, developer infrastructure, and AI-native systems. Most of my work lives at the intersection of offensive security, protocol engineering, and CLI design — shipping single-binary tools with minimal dependencies that solve one problem well.

  • Security research — network beacon detection, distributed scanners, web fuzzers, OSINT frameworks, and supply-chain forensics
  • Developer tools — self-hosted tunnel servers, webhook inspectors, deterministic crawlers, and CI/CD automation
  • AI infrastructure — Model Context Protocol (MCP) servers, multi-agent coordination protocols, and DSLs for composable AI systems
  • Systems programming — Rust-first, with production work in Zig, Go, Python, TypeScript, and Nim
  • Open source — 40+ original public tools, all designed to be auditable and forkable

I care about software that is small, correct, and observable. If it can't be deployed with scp and run without a runtime, it's probably too complicated.


Languages & Tools

Rust Zig Go Python TypeScript Nim Shell Docker PostgreSQL Redis SQLite

live github metrics

Recently Shipped

Repository Description Lang Last push
leet-index super top secret $\texttt{JavaScript}$ 2026-08-05
poise-rs Composable, rigorously verified load-balancing primitives for Rust $\texttt{Rust}$ 2026-08-05
dev-portal-correctly Specification-first developer portal: modular OpenAPI 3.1 + AsyncAPI 3.1 sharing one domain… $\texttt{JavaScript}$ 2026-08-05
kilo-data Open threat-intelligence and IP-reputation ETL for phishing and abuse screening, with BGP and… $\texttt{Rust}$ 2026-08-04
vulngraph-data Deterministic data pipeline for VulnGraph — ingests 11 vulnerability sources, publishes… $\texttt{Rust}$ 2026-08-04
oxide-ci A modern, extensible, high-performance CI/CD engine written in Rust. $\texttt{Rust}$ 2026-08-03

This section and the metrics panel above are regenerated nightly by a stdlib-only Python script querying the GitHub API — no third-party stats services, nothing to go stale.


Selected Repositories

Security & Detection

Repository Description Language
floq C2 beacon detection via Floquet spectral analysis — pcap, live capture, or OTLP; 274 KB binary $\texttt{Zig}$
anomalyx Contract-first anomaly detection across ~30 formats — logs, pcap, OTLP; deterministic CLI $\texttt{Rust}$
fatt Distributed async scanner for exposed files across millions of domains $\texttt{Rust}$
fuf Fast next-generation web fuzzer $\texttt{Rust}$
robin-smesh Decentralized dark web OSINT framework — Tor crawling, artifact extraction $\texttt{Rust}$
mini-shai-hulud-dragnet Forensic dataset + live dashboard for the 2026 npm supply-chain worm — 1,117 dropbox repos, 47 IOCs $\texttt{Shell}$

Systems & Developer Tools

Repository Description Language
tailx Live system cognition engine — tail reimagined: anomalies, traces, structured JSON; 144 KB $\texttt{Zig}$
coelacanth AI-first Unix primitives, clean-room reimplemented under one machine-checkable contract $\texttt{Zig}$
palimpsest Deterministic crawl kernel — same seed, identical crawl; JA3/JA4 impersonation, WARC++ $\texttt{Rust}$
hook-bin Single-binary webhook inbox — embedded SQLite, live dashboard, zero deps $\texttt{Rust}$
zgrok Self-hosted ngrok alternative built on Tokio $\texttt{Rust}$
cora Multi-pattern fixed-string matcher — Aho-Corasick + SIMD on mmap'd files, NDJSON output $\texttt{Rust}$

AI & Agent Infrastructure

Repository Description Language
smesh-rust Decentralized coordination protocol for multi-agent LLM systems — QUIC P2P, sub-µs signal diffusion $\texttt{Rust}$
vajra Deterministic semantic reduction engine for structured data — break noise, preserve truth $\texttt{Rust}$
agent-calc AI-native exact calculator — typed JSON math, symbolic reasoning, mutation-tested $\texttt{Rust}$
sigmos DSL for defining AI-native, composable, reactive systems $\texttt{Rust}$
mcp-flow WebTransport binding for MCP — QUIC streams, no head-of-line blocking $\texttt{Multi}$
toon-zig TOON (Token-Oriented Object Notation) — 30–60% token reduction for LLMs $\texttt{Zig}$

Education & the Absurd

Repository Description Language
humanlang Token bucket rate limiter implemented in 37 languages (1957–2016) $\texttt{Multi}$
git-archaeology-lab Hands-on exercises for forgotten git commands — crafted history, real bugs, real bisect targets $\texttt{Shell}$
gitfoo_episode_1 Git Black Belt Masterclass — the other 90% of git most devs never use $\texttt{Python}$
OverHelloWorld Intentionally over-engineered Hello World — DDD, CQRS, event sourcing, telemetry $\texttt{Go}$
fafoaas FAFO as a Service — spec-first engineering masterclass; AsyncAPI 3 + MCP, 98/98 mutation score $\texttt{TS}$
tip-to-tip-efficiency Mathematically serious crate for a deeply unserious Silicon Valley efficiency empire $\texttt{Rust}$

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Systems-level software engineer building security tools, developer infrastructure, and AI-native systems in Rust, Go, and Zig. 560+ open source repositories.

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