AJ Greyling

Software engineer building developer tooling, database infrastructure, and AI-agent systems. I work close to the metal of Postgres and the edges of the Model Context Protocol — token-efficient MCP servers, project-knowledge auditing, and DSL toolchains — and I run an open reading library on the side.

What I build

• capybara-db-mcp — minimal, token-efficient database MCP server for PostgreSQL, MySQL, SQL Server, SQLite, and MariaDB.
• electric-elephant — Postgres-specific, token-aware, zero-dependency SQL MCP server.
• cursor-doctor — an MCP server that audits a project for documentation, rules, skills, and other knowledge artifacts.
• helium-dsl-visx — a Cursor-first DSL toolchain: language server, MCP server, editor extension, and packaging pipeline.
• arjuna-badger-press — a free, open reading library; read online or download every book.
• the420code-proof — an independent, executable check of the 420 Code theory: re-derives the fundamental constants from one axiom and one input, with zero fitted parameters.

Focus areas

PostgreSQL · Model Context Protocol · Developer tooling · AI-agent systems · TypeScript

Reach me

• 📧 info@arjunabadger.press
• 🌐 arjunabadger.press