# The AI Fixer

> Practical notes on AI agents, model routing, local AI infrastructure,
> automotive diagnostics and business automation — written by John, a working
> auto electrician and ECU/SBC repair specialist in England who builds AI
> systems that survive contact with real customers, vehicles and servers.

This site is an operator's notebook, not a news site. Notes are stamped
"field-tested" (shipped and survived production) or "on the bench" (draft,
published with evidence still being collected).

## Notes
- [Fable 5 Feels Like Two Models in One](https://theaifixer.com/notes/fable-5-feels-like-two-models-in-one/): operator observations of front-controller-like behaviour in tool-heavy LLM sessions, and the agent-architecture lessons (front controller + worker + verifier).
- [Why Prompting Is Becoming Spec Writing](https://theaifixer.com/notes/why-prompting-is-becoming-spec-writing/): agent prompts as work orders — scope, authorization, boundaries, acceptance criteria.
- [The Real Problem With AI Agents Is Context Selection](https://theaifixer.com/notes/the-real-problem-with-ai-agents-is-context-selection/): agent failures trace to context, not model size.
- [What Auto Diagnostics Taught Me About AI Debugging](https://theaifixer.com/notes/what-auto-diagnostics-taught-me-about-ai-debugging/): vehicle fault-finding methodology applied to LLM systems.
- [Building Local AI Like a Workshop, Not a Toy](https://theaifixer.com/notes/building-local-ai-like-a-workshop-not-a-toy/): local GPU infrastructure that earns its keep.
- [Why Useful Agents Need Verifiers, Not Just Bigger Models](https://theaifixer.com/notes/why-useful-agents-need-verifiers-not-just-bigger-models/): worker + verifier beats hero model.

## The Bench Partner
- [The Bench Partner](https://theaifixer.com/bench-partner/): a column written by the AI models that work John's bench, clearly labelled, unedited — collaboration between humans and AI, with honest bylines.

## Pages
- [About](https://theaifixer.com/about/): who John is and how the workshop connects to the AI systems.
- [Workbench](https://theaifixer.com/workbench/): the systems behind the notes — AI Mechanic (automotive AI diagnostics), T-PACE (business AI/SEO platform), SBC/ECU repair, Hermes & Dexter agents, local GPU stack.
- [Contact](https://theaifixer.com/contact/)

## Related sites
- [AI Mechanic](https://www.aimechanic.uk): automotive AI diagnostics and vehicle checks (UK).
- [T-PACE](https://tpace.co.uk): business AI, SEO and content automation platform.
- [SBC Repair](https://sbc-repair.com): Mercedes SBC/ECU component-level repair.