arcnull_

Infrastructure studio

Catch infrastructure failures before production does.

Arcnull is an infrastructure studio building open-source tools for engineering teams, starting with Postgres schema drift detection and AI agent governance.

Explore open-source projects View on GitHub
Open source Built for engineering teamsEarly access
Drift Scanner Agent Guard Breaking
schema.grapharcnull studio · 2 projects
staging
production drift
risk score87%

Column

verified_at

Change

NOT_NULL_ADDED

Why Arcnull exists

Infrastructure fails quietly.

The worst production issues rarely look dramatic at first: a missing column, a risky migration, an AI agent with too much access, a deployment that should have stopped.

Arcnull builds focused open-source tools for those moments.

drift incident8 min to first error
  1. 10:14  Migration passes CI
  2. 10:16  Production schema differs
  3. 10:17  Deploy continues
  4. 10:22  API starts failing

Arcnull tools are built to catch the gap between passed CI and safe to ship.

Projects

Starting with two open-source projects.

Small, opinionated, inspectable tools. Nothing reaches v1.0 until it works against a real production workflow.

All projects
01
v0.1 · early

Drift Scanner

PostgreSQL schema drift detection for CI/CD.

Compares staging and production schemas in CI/CD, flags unsafe changes, and blocks risky deploys before they ship.

Detects

  • NOT_NULL_ADDED
  • COLUMN_DROPPED
  • TYPE_CHANGED
  • CONSTRAINT_CHANGED
View project drift-scanner GitHub Action
02
planned

Agent Guard

Governance for AI agents that can touch infrastructure.

Logs agent actions, routes risky changes for review, and requires approval before they reach production.

Covers

  • tool calls
  • database actions
  • deployment changes
  • approval gates
View project agent-guard MCP servers

Latest writing

Engineering notes from the workbench.

View all

Coming soon

Engineering notes from the Arcnull workbench.

Postmortems, design notes, and the things we learn building Drift Scanner and Agent Guard. We post when there is something worth publishing.

Team

Built by engineers close to production systems.

Arcnull is starting small: one studio, two open-source tools, and a bias toward infrastructure that can be inspected, tested, and trusted.

Meet the maintainers

  • Founder / Maintainer

    Maxwell

    Founder / Engineer

    Building Arcnull, and the first infrastructure tools around schema drift and AI agent governance.

  • Open-source contributors

    Maintainers / Reviewers / Early users

    Early contributors help shape Arcnull through issues, pull requests, production edge cases, and honest feedback from real systems.

    Contribute on GitHub