The New Engineer MCP server

Which MCP servers are The New Engineer's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-27

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Whose server it is

Registry namecom.thenewengineer/hvacverified in the MCP registry

The registry name sits under thenewengineer.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-27

Stateanswerschecked 2026-10-27
Tools11
Server calls itselfthe-new-engineer
Server version1.1.0
Protocol version2025-06-18

On 2026-10-27 the server answered initialize and tools/list without a sign-in. First answer in 189 ms.

Should an agent connect itNot proven either way yet

Whether its tools do the product's job has not been judged yet.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 7, the first on 2026-10-27

INITE MCP score93 of 100answers 100 · definitions 100 · context 57 · connects 100
Answered100% of days7 of 7 daily checks
Median first answer576 ms
Space in an agent's context≈ 14,635 tokensthe definitions of all its tools (11), which an agent carries on every turn
Tool definitionsA · 100 of 100
Typed results3 of 11 toolsdeclared outputSchema: results come typed, read once

Every tool passes all six checks.

What an agent can do with it

not sure · Trace pressure drop along a pipe or duct circuit
not sure · Measure water volume in hydronic networks from the model
can do · Size expansion vessels to NF EN 12828

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers11 tools · read 2026-10-27

size_expansion_vessel
DETERMINISTIC: the same inputs always give the same result — from any AI, on any day. Figures come from the standard's tables and formulas, never from a language model's estimate. Every step is auditable. Size the expansion vessel and…
water_content_from_vessel
DETERMINISTIC: the same inputs always give the same result — from any AI, on any day. Figures come from the standard's tables and formulas, never from a language model's estimate. Every step is auditable. Deduce the water content of an…
check_refrigerant_switzerland
DETERMINISTIC: the same inputs always give the same result — from any AI, on any day. Figures come from the regulation's annexes and thresholds, never from a language model's estimate. Every step is auditable. Swiss refrigerant regulation…
check_en378_zones
DETERMINISTIC: the same inputs always give the same result — from any AI, on any day. Figures come from the standard's tables and formulas, never from a language model's estimate. Every step is auditable. EN 378 applied to BUILDING…
read_ifc_overview
CALL THIS FIRST, as soon as the user gives you a token - a link thenewengineer.com/ia/XXXX pasted in the conversation - BEFORE you answer anything, even when the user only says they will choose or do something themselves. It answers…
apply_ifc_rules
Turn what you read in the overview into rules the tool replays on EVERY piece of the model, including the ones you were never shown. NOT NEEDED ON A MODEL ALREADY TREATED: when read_ifc_overview returns 'designation_existante', the units…
read_ifc_networks
DETERMINISTIC: networks come from geometry, not from a guess. The same model always gives the same networks, from any AI, on any day. Read the networks of an IFC model already uploaded by the user. WHAT A NETWORK IS. A set of parts that…
name_ifc_networks
Apply the names you propose, and get back the updated report. THE NAMES ARE YOURS, THE NETWORKS ARE NOT. You are naming what the tool measured; you are not changing what it measured. Nothing you send here alters a network, a part, or a…
trace_duct_circuits
THE CIRCUITS THE FANS OF A MODEL ARE SIZED ON, found without anyone clicking and computed on the pressure-drop page, where the user confirms types and flows and reads the pressure drops. THE USER WANTS TO PICK THE UNITS THEMSELVES: call…
open_ifc_upload
Show an upload box in the conversation where the user can drop an IFC file (.ifc) of a building services model (HVAC, plumbing, heating). The file goes straight from the user's browser to thenewengineer.com - you never see it. CALL THIS…
ifc_upload_result
Where the upload stands. When `state` is `depose`, `token` is the token to pass to read_ifc_networks.

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "hvac": {
      "type": "http",
      "url": "https://thenewengineer.com/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http thenewengineer https://thenewengineer.com/mcp

Add to Cursor Add to VS Code

claude.ai, ChatGPT and other clients: add https://thenewengineer.com/mcp as a custom connector in the settings.

OpenAPI spec

143 paths, read 2026-10-27. Open the spec ↗

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.