Claude / Anthropic stack

A UK consultant for the Claude / Anthropic stack

Workflow design, agent reliability, and evaluation for teams building on Claude — Claude Code, the Claude Agent SDK, and the Model Context Protocol. Not a reseller pitch: the same review rigor Appaya applies to every engine, aimed specifically at the Anthropic stack.

Fixed price, quoted after a free fit check By Appaya Ltd

What a Claude consultant actually does

The title covers more ground than "prompt help." Practically, it breaks into four things:

When Claude fits — and when it doesn't

We're not going to pretend one model family is the answer to every problem, because it isn't. Claude tends to be a strong fit where careful multi-step reasoning, longer agentic workflows, and coding-heavy tasks matter — that's where Appaya's own delivery pipeline leans on it most heavily. Other tasks are genuinely better served by a different model, a smaller specialised one, or no model at all.

The more useful truth: the underlying skill — designing a reliable agent workflow, writing evaluations that actually catch regressions, structuring tools and context sensibly — transfers across model providers. Appaya runs a provider-agnostic delivery pipeline across Claude, Codex, Gemini, and whichever engine earns the job on a given task. This page exists because Claude expertise specifically is what a lot of UK teams are searching for right now, and it's real expertise we have — not because we think it's the only stack worth using.

Engagement shapes

Claude-stack work maps onto Appaya's three standard offers, not a bespoke fourth one:

Audit

AI Codebase Audit

You have already shipped something on Claude and want an honest read on it — repository, architecture, security, technical debt, UX and the AI implementation itself. Risk-ranked findings, a candid verdict on what to retain, improve or rebuild, and a prioritised 60–90 day plan. A fixed fee, five working days.

Lead

Fractional technology leadership

Ongoing senior technical judgement once you know what you have — technical direction, architecture and delivery discipline, without a full-time hire. A monthly retainer, set at a fit check.

Deliver

Build & remediation

A defined outcome — a new Claude-based workflow built, or an existing one repaired — implemented, tested, and handed over against agreed acceptance criteria.

Founder credibility

Appaya is founded and directed by Luke Czak — twelve years leading product and technology in UK regulated fintech, from Series A startups to global banks, now directing Appaya's AI-native delivery pipeline day to day. Luke scopes every engagement, steers the agent fleet doing the work, and signs off every build before a client sees it. More background is on his personal site, lukeczak.com.

Building on Claude and want a second, independent opinion?

Tell us what you're building or where reliability is in question — we'll tell you honestly whether it's an audit, a review, or a build.