OpenBIMSAFE
Model Context Protocol (MCP) server for openBIM
Overview
From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.
A Model Context Protocol (MCP) server for working with Building Information Modeling (BIM) files. This server provides tools to convert IFC files to fragment format, load fragments, and query BIM data by category.
Features
- IFC to Fragment Conversion: Convert Industry Foundation Classes (IFC) files to the open and efficient fragment format
- Fragment Loading: Load and work with pre-converted fragment files
- Category-based Querying: Fetch BIM elements by category (e.g., walls, doors, windows) with configurable attributes and relations
Tools
convert-ifc-to-frag
Converts an IFC file to a .frag file format for efficient processing.
Parameters:
inputPath(string): Full path of the IFC file to convertoutputPath(string): Full path where the output .frags file will be saved
Example:
Input: /path/to/building.ifc Output: /path/to/building.frag
load-frag
Loads a .frag file into memory for querying.
Parameters:
filePath(string): Full path of the .frag file to load
fetch-elements-of-category
Fetches elements of a specified IFC category from loaded fragments.
Parameters:
category(string): Category name (e.g., "IFCWALL", "IFCDOOR", "IFCWINDOW")config(object): Configuration for fetching elements with the following structure:attributesDefault(boolean): Include default attributesattributes(array): List of specific attributes to includerelations(object): Relation configurationHasAssociations: Include association relationsIsDefinedBy: Include definition relations
Dependencies
- `@modelcontextprotocol/sdk`: MCP server framework
- [
@thatopen/fragments](ht
93793aa4dc0dOBSERVED · 2026-10-08Connect
Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control.
claude mcp add openbim-mcp -- npx -y [email protected]
{
"mcpServers": {
"openbim-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
]
}
}
}Exposed tools (3)
3 read · 0 write · 0 destructive.
| Tool | Risk | Description |
|---|---|---|
convert-ifc-to-frag | read | Convert an IFC file to a .frag file. Needs file-system server |
fetch-elements-of-category | read | Fetch elements of a specified category |
load-frag | read | Load a .frag file. Needs file-system server |
Trust audit
SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.
| Layer | What it checks | Result |
|---|---|---|
| L0 | Provenance & inventory | PASS |
| L1 | Static analysis of the code | PASS |
| L2 | Instruction surface (what it tells the agent) | PASS |
| L3 | Class-specific surface | PASS |
| L4 | Behavioural (sandbox) | SKIPPED |
What the source does
- Filesystem
- none-observed
- Network
- none-observed
- Shell
- none-observed
- Dependencies
- not all pinned
- Secrets in source
- none-found
Findings (1)
@modelcontextprotocol/sdk, @thatopen/fragments, @types/node, web-ifc, zod
Gates applied: no_behavioural_pass.
93793aa4dc0dfull audit observations/trust-audit/mcp-server/helenkwok__openbim.json · Report an issue / request a re-scanAudit history
Every audit this server has had. A grade with a past is a grade somebody is still checking.
| Date | Source | Verdict | Grade | Score | Change |
|---|---|---|---|---|---|
| 2026-10-08 | 93793aa4dc0d | SAFE | B | 89 | first audit |
Questions
What is the OpenBIM MCP server?
Model Context Protocol (MCP) server for openBIM
What tools does OpenBIM expose?
3 in total: 3 read-only, 0 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.
Is OpenBIM safe to connect to an agent?
The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B.
What credentials does OpenBIM need?
No credential environment variables were found in its source, so it appears to need none.
How does OpenBIM run?
It speaks stdio, so it runs as a local process your client starts. It is published on npm as openbim-mcp at 1.0.0.
How current is this page?
The grade is for one exact copy of the source (93793aa4dc0d), read on 2026-10-08. The repository is watched and re-audited when it changes.