io.github.j03rul4nd/ifc-viewer-mcp
IFC Viewer Online
Is the IFC Viewer Online MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-03.
IFC/BIM with a 3D viewer: validate IFC, check IDS, Health Score, drawings, digital twins.
alive probed 2026-11-15 · unchanged since 2026-11-03
- Run it
- npx -y ifc-viewer-mcp@1.0.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- ifc-viewer-mcp 1.0.0
- Capabilities
- tools
- Instructions
- 324 characters
- Of a 1M window
- 0.4 % of a 1M context window
- Count
- 3.7k tokens in Claude Opus 5.5, exact, measured 2026-11-03. With the Claude Code prefix mcp__…__ on each tool name: 3.8k. The o200k_base estimate is 2.3k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/j03rul4nd/ifc-viewer-online
- Website
- https://www.ifcvieweronline.eu/blog/ifc-mcp-server-claude-bim-3d-viewer/
- Registry
- active, updated 2026-11-02 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.62×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| open_in_3d_viewer | 767 | 473 | 21 % |
| read_fiware_entities | 562 | 347 | 15 % |
| validate_ifc | 426 | 263 | 12 % |
| open_drawings | 379 | 234 | 10 % |
| check_ids | 337 | 208 | 9 % |
Compare this server with others.
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Other registry entries on npmjs.com, the ones next to this name; all of them.
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- Mermaid Online MCP — Share Links & Source io.github.j-river/mermaidonline · alive
- SubtitlePop MCP — SRT & WebVTT Tools io.github.j-river/subtitlepop · alive
- Code Assistant io.github.j0hanz/code-assistant · alive
- Code Lens io.github.j0hanz/code-lens · alive
- Code Review Analyst io.github.j0hanz/code-review-analyst · not found
- Cortex MCP — Multi-Level Reasoning Server io.github.j0hanz/cortex-mcp · alive
Servers that mention viewer.
- SnapHost ai.snaphost/snaphost · needs auth
- CountLink app.countlink/countdown · alive
- Show It Works app.showitworks/show-it-works · alive
- Interviewer Agent by Nova (CIVAI) co.civai.nova/interviewer-agent · alive
- AI Interview Agents com.aiinterviewagents/interviews · needs auth
- com.clauxel.a2adependencyinspector/a2adependencyinspector-mcp · no DNS
- com.clauxel.a2areplayreceipt/a2areplayreceipt-mcp · no DNS
- com.clauxel.agentichtmlexportqa/agentichtmlexportqa-mcp · no DNS
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The server answers initialize and tools/list. Nothing to fix.