Ray Group
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Bespoke · 2–6 weeksFixed-scope delivery

Custom MCP Server

We encode your rubrics and design system as MCP tools — plus a Claude Design / Figma handoff pack (tokens, exploration refs, flow boards, living docs, crit-partner prompts).

What it is

A bespoke MCP server that turns your rubrics and design system into tools agents call directly — plus a Claude Design / Figma handoff pack so tokens, exploration refs, flow boards, and living docs stay machine-readable from day one.

How it works

Discovery workshop → DTCG tokens + corpus design → TypeScript MCP (3–8 tools including audit / persona / flow patterns) → client configs for Cursor, Claude Desktop, Claude Design, Codex → handoff with the design-handoff template pack in a fixed two-to-six-week engagement.

Why it's worth it

Fixed-scope consulting, not a subscription. You leave with a production MCP your engineers own, and design artefacts agents and humans share — not a prototype buried in a wiki.

How it works

Your expertise, one tool call away.

1

Discovery and corpus design

We map your frameworks, checklists, and decision trees into a structured corpus - rubric areas, named patterns, glossary entries - the same architecture behind the DeFi UX MCP.

2

MCP server build

TypeScript MCP server with search, lookup, and domain-specific tools. stdio for local dev; optional hosted transport with API-key auth for cloud agents.

3

Deploy, document, hand over

Client config for Cursor / Claude / Codex, README, tool schemas, and a handover session so your team can extend the corpus without us.

Deliverables

A production MCP server, not a prototype.

Built on the same patterns as Ray Group's DeFi UX MCP - MIT-friendly tooling, clear tool boundaries, and documentation your engineers can maintain.

  • Structured corpus design workshop and written information architecture.

  • MCP server with 3–8 domain tools (search, rubric, patterns, personas, flows, audit worksheets).

  • Machine-readable DS pack: DTCG tokens, CSS variables, exploration-ref and flow-board schemas.

  • Claude Design / Figma handoff templates (living-docs PR checklist, crit-partner prompts).

  • stdio transport for local AI clients; optional hosted tier with API-key authentication.

  • Configuration templates for Cursor, Claude Desktop, Claude Design, and Codex.

  • Documentation, handover session, and 30 days of post-launch support.

Frequently asked

About custom MCP builds.

What kinds of frameworks work well?
Scored rubrics, named pattern libraries, compliance checklists, design-system decision trees, API style guides, and onboarding playbooks - anything your team currently looks up in PDFs or wikis at decision time.
How long does a build take?
Two to four weeks for a focused corpus (similar scope to DeFi UX MCP). Four to six weeks for larger corpora, hosted transport, screenshot or file-based audit tools, and multi-team licensing.
Who owns the code?
You do. We deliver source code under a licence agreed in the statement of work - typically full ownership for bespoke client builds, or a shared open-core model if you want community contributions.
Can we extend it ourselves?
Yes. The corpus lives in structured JSON/YAML in the repo. Adding a pattern or rubric area is a PR, not a re-engagement - though we're available for retainers if you want us to curate updates.
Why MCP instead of RAG over our docs?
RAG retrieves chunks; MCP exposes structured tools with known schemas. When an agent needs 'score this screen against criterion 4.2', a rubric tool returns exact criteria - not the nearest paragraph from a wiki.

Start a conversation

Tell us what you want agents to know.

Share your framework (compliance rubric, design system rules, API conventions, audit checklist) and we'll reply within two working days with scope, timeline, and a fixed quote.

Enquire about a custom MCP server

Describe the frameworks or checklists you want encoded. We'll follow up with scope and pricing - no newsletter.

We'll only email you about Custom MCP Server. No newsletter, no passing your details on.