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Blog.

Notes from building: architecture, agents, tests and interface details, each one tied to something I shipped.

  1. Engineering7 min read

    Does PHP2Shell put your business website at risk?

    Yes, if it runs on PHP and nobody updates it: a third of PHP sites run versions PHP no longer fixes, and hacked sites sell casino links.

  2. Product8 min read

    How to scope an MVP so the first version ships

    How to scope an MVP: cut what needs something new, note where it plugs in. Two agents cost Relay 11 existing files; ElevenLabs, 40.

  3. Artificial Intelligence9 min read

    Can MiniMax M3.1 Flash fix a real bug for free?

    MiniMax M3.1 Flash fixed a real bug in 3 of 3 runs for $0, in about 4 minutes each. DeepSeek V4.1 Flash took 27 s for 1.4¢.

  4. Engineering10 min read

    How to move to a modular monolith without a rewrite

    A tangled codebase can become versioned modules without a rewrite: cut import cycles in place first. How SharpOS got to 53.

  5. Artificial Intelligence8 min read

    DeepSeek V4.1 Flash test: 3 of 3 runs green, under 2 cents

    Can DeepSeek V4.1 Flash fix a real bug? 3 of 3 runs passed 18 failing time-zone tests, in about 90 s and under 2 cents each.

  6. Artificial Intelligence11 min read

    Too many MCP tools? 130 tools for half the context tokens

    Too many MCP tools? On SharpOS, 130 tools cost about 32,000 tokens up front, half a strict mirror, with one registry and lazy schemas.

  7. Engineering10 min read

    TDD with coding agents only works behind a required gate

    A developer directing coding agents can keep a large codebase correct with a failing test as the spec and one required gate on main.