IFC Viewer Online

io.github.j03rul4ndPublished by GitHub account j03rul4ndv1.0.0Updated Nov 3, 2026

IFC/BIM with a 3D viewer: validate IFC, check IDS, Health Score, drawings, digital twins.

VerifiedSTDIODesktop onlyMedia & Design

Server details

Identifier: io.github.j03rul4nd/ifc-viewer-mcp
Transport: STDIO
Runtime: Desktop only
Trust: Verified
Published: Nov 3, 2026

Security note

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The registry verified the GitHub account j03rul4nd for this listing. That does not show the account is the product's maker.

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Overview

IFC Viewer Online's local MCP server; no sign-in required; STDIO.

No AI overview yet: these facts come from the registry entry and the server itself.

Installation

In SourceWeft

Open IFC Viewer Online in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

IFC Viewer Online — MCP server

[npm] [MCP] [License: MIT]

An MCP server that gives Claude and other AI assistants an IFC/BIM toolkit with a 3D viewer: validate IFC files, check them against IDS, get a Health Score, and open models, technical drawings, 3D sketches and live digital twins in the free browser viewer at www.ifcvieweronline.eu.

Validation, IDS and DXF reading run on your machine: files are not uploaded anywhere. Free, no account, no API key.

Guide with examples: https://www.ifcvieweronline.eu/blog/ifc-mcp-server-claude-bim-3d-viewer/

Install

Needs Node.js 20 or later.

Claude Code

Claude Desktop — Settings → Developer → Edit config, then add:

Cursor, VS Code, Windsurf, Cline and other clients take the same command + args.

Tools

Tool	What it does	Runs
`validate_ifc`	Health Score (0–100), issue counts, costliest rules, issues with fix guides	Local
`list_validation_rules`	Every rule with category, severity, standard	Local
`check_ids`	IFC against an IDS 1.0 file: pass/fail per specification, failing elements	Local
`open_in_3d_viewer`	Link + `<iframe>` to view public IFC files in 3D (federated, on the map, isolated class, point clouds)	Browser
`open_drawings`	Model with a floor plan cut beside it; drop DXF/PDF, calibrate, compare, export	Browser
`read_dxf`	Layers, entity counts, extents, units and texts of a DXF	Local
`open_3d_sketch`	3D sketch studio for pen, touch and foldables	Browser
`list_digital_twins`	Live city twins (Barcelona, Helsinki, Tokyo) + twin builder	Browser
`read_fiware_entities`	NGSI-LD / NGSIv2 entities from a FIWARE broker as flat records	Local → broker
`search_port_library`	Port de Barcelona IFC object library (CC BY 4.0)	Local

Example prompts

"Validate C:/projects/tower/ARC.ifc and tell me the three things that cost the most points."
"Check model.ifc against requirements.ids and list the failing walls."
"Open https://example.com/site.ifc on the map, seen from the top, and give me an embed for our wiki."
"What layers are in ground-floor.dxf, and what rooms are labelled?"
"Find a crane in the Port de Barcelona library and open it in 3D."
"Show me a live digital twin of Barcelona."

Develop

bash

cd mcpnpm installnpm run build        # bundles the viewer's own validator and IDS engine into dist/index.jsnode dist/index.js   # stdio

cd mcpnpm installnpm run build        # bundles the viewer's own validator and IDS engine into dist/index.jsnode dist/index.js   # stdio

Tests run with the app's suite: npx vitest run mcp/ from the repo root.

Source: mcp/README.md at commit 7cb7b58

Tools

SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

v1.0.0LatestNov 3, 2026

Score

50% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

Reached in the last 30 days25 pts
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Auth declared10 pts
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Tools listed15 pts
Answer tools/list without a credential, or ship a package that starts in a sandbox without one.
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
License10 pts