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OpenMOCA™ vs Craft Quantities

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

OpenMOCA™ compared with Craft Quantities
DetailOpenMOCA™ logo OpenMOCA™Craft Quantities logo Craft Quantities
What it doesAn open standard for portable grounding for AI that packages knowledge with its structure and original sources Free JSON API for construction calculators with test vectors and building codes
StageNot given Not given
FoundedNot given Not given
Based inGB Not given
Pricing modelOpen source Open source
PricingNot given Free under CC BY 4.0 licence
Key features
  • Modular knowledge packages with optional ontology structure
  • Readers in TypeScript, .NET and Python for consistent package interpretation
  • RAG with verifiable citations and provenance tracking
  • Signed packages and reviews for trust verification
  • Sidecar indexes with lexical and semantic search
  • Agent framework integrations including LangChain and LlamaIndex
  • 1,173 construction calculators with full inputs and test vectors
  • 3,485 published test vectors for validation
  • No authentication key or rate limits required
  • Citations to building standards with section numbers
  • Executable API for running calculations on request
  • MCP server integration for AI assistants
  • 79 job takeoffs with calculator sequences
  • Cross-market glossary in US, Canadian, UK and Australian usage
  • Corrections ledger tracking confirmed errors
  • Unit conversion with exact statutory factors
What makes it different
  • Citations and provenance you can verify against original sources
  • Run offline on your own infrastructure without network dependency
  • Signed packages and reviews proving who published and checked content
  • Content freshness and scope enforcement removing outdated or irrelevant passages
  • No API key required with no rate limits or quotas
  • CC BY 4.0 licence allows commercial use and redistribution
  • Every calculation cited to specific building code sections
  • Pinned test cases prevent silent changes to published figures
  • Complete accessibility with CORS support for browser use
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)1 no change since last checkNot checked yet
Trust Flow (Majestic)00
Citation Flow (Majestic)026
Referring domains (Majestic)029

4 details filled in for both companies.

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