Volex MCP Connector · for Claude & any MCP client

Give your AI assistant verified engineering.

Every other AI will happily guess a beam size — and can be confidently wrong. The Volex connector lets Claude call real structural calculations instead, so the answer comes back code-compliant, clause-referenced and auditable.

AI can describe engineering. Volex proves it.

Add it to Claude → See the proof

What it looks like

Ask in plain English. The assistant calls Volex and hands back a checked result — with the clause working and a link to the proof.

Design a 300×600 RC beam, 6 m span, for M = 200 kNm and V = 100 kN in C30. Calling Volex → design_rc_beam … RC beam to Eurocode 2 (EN 1992-1-1) — ✅ PASS · utilisation 80% Flexure (EC2 §6.1): K = 0.074 vs K′ = 0.167 (singly reinforced) A_s,req = 905 mm² → 2H40 Shear (EC2 §6.2): V_Rd,c = 80.5 kN, links required → H6@300 Deflect (EC2 §7.4): L/d = 11.0 vs limit 13.7 (OK) Validated against published references (359/359): volexlabs.com/verification

Tools it gives your assistant

Six verified calculators today, spanning concrete, steel, timber, masonry and foundations — with the rest of Volex's ~390 endpoints addable the same way.

ToolStandardReturns
design_rc_beamEC2Flexural steel, shear links, deflection
design_rc_columnEC2Axial + biaxial bending, slenderness
design_steel_beam_columnEC3Combined axial + bending check
design_timber_beamEC5Bending, shear, bearing, LTB, deflection
design_masonry_wallEC6Vertical capacity, slenderness, eccentricity
design_strip_foundationEC7Bearing width + RC footing design

Add it to Claude in three steps

1

Get the connector

Clone the Volex connector and install its two dependencies with pip install -r requirements.txt.

2

Point it at your account

Set your Volex email & password (or an API token) so calls run against your plan.

3

Register in Claude Desktop

Add the block below to your Claude config, restart, and a 🔌 tools icon appears.

{
  "mcpServers": {
    "volex": {
      "command": "python",
      "args": ["/absolute/path/to/connector/server.py"],
      "env": {
        "VOLEX_API_BASE": "https://anvil.volexlabs.com",
        "VOLEX_EMAIL": "you@example.com",
        "VOLEX_PASSWORD": "your-volex-password"
      }
    }
  }
}

Uses the open Model Context Protocol, so it works with any MCP-capable assistant — Claude Desktop is just the reference setup. Calls count against your Volex plan (free tier included).

Why route AI through Volex

Code-compliant, not guessedResults come from the same engine engineers use — to the Eurocodes, AISC, AS, IS, BS and NZS.
Clause-referencedEvery answer cites the clause it used, so it reads like a calc sheet, not a chatbot reply.
Validated against references359/359 published worked-example checks pass — the proof is public.
Auditable outputSuitable to hand to a reviewer. Still an engineering aid: verify with a competent engineer.

Frequently asked

What is the Volex MCP connector?
An MCP (Model Context Protocol) server that lets an AI assistant such as Claude call Volex Anvil's verified structural calculations as tools. Instead of guessing a beam or column size, the assistant returns a code-compliant, clause-referenced Eurocode result validated against published references.
Which AI assistants does it work with?
Any MCP client. Claude Desktop is the reference setup, but the connector uses the open Model Context Protocol, so it works with any assistant that supports MCP tools.
What does it cost?
The connector itself is free and open. Calls count against your Volex account plan — the free tier includes calculations each month, and paid plans lift the limit.
Can I trust the numbers?
Every result is validated against published worked examples — 359 of 359 checks pass, with the proof public in the verification report. Outputs remain an engineering aid and must be checked by a competent engineer.