Blog
News, insights, and deep dives on classification systems and the global taxonomy knowledge graph.
Introducing WorldOfTaxonomy
A unified knowledge graph connecting 1,000+ classification systems, 1.2M+ codes, and 321K+ crosswalk edges. The open-source Rosetta Stone for global taxonomies.
Why Classification Systems Are Broken
Every country and industry body has its own coding system. Translating between them costs hours, teams, and millions. Here is why the fragmentation exists and what we can do about it.
1,000 Systems, 1.2M+ Nodes, 321K Crosswalk Edges: How We Built the Knowledge Graph
The architecture and ingestion pipeline behind WorldOfTaxonomy - from authoritative source files to a unified queryable graph of global classification systems.
Translating NAICS to NACE in One API Call
A practical walkthrough for data engineers who need to reconcile North American industry codes with EU classification systems using the WorldOfTaxonomy API.
Give Your AI Agent Access to Every Taxonomy
Set up the WorldOfTaxonomy MCP server with Claude, Cursor, VS Code, Windsurf, or any MCP-compatible client in under 5 minutes.
Medical Coding Made Navigable
ICD-10-CM, ICD-11, LOINC, SNOMED CT, and NCI Thesaurus in one searchable graph. How WorldOfTaxonomy helps health IT teams navigate clinical classification systems.
Trade Classification for Global Commerce
HS, UNSPSC, CPC, SITC, HTS, and Schedule B - how WorldOfTaxonomy connects the trade classification systems that power global customs and compliance.
Mapping Occupations Across Borders
SOC, ISCO-08, ESCO, O*NET, ANZSCO, NOC - how to translate job classifications between countries for HR, recruitment, and labor market analysis.
Self-Host WorldOfTaxonomy in 2 Minutes
Clone the repo, run docker compose up, and you have the full knowledge graph running locally. A step-by-step guide to self-hosting WorldOfTaxonomy.
Contributing a New Classification System
A TDD-enforced guide to adding a classification system to WorldOfTaxonomy. Three paths: NACE-derived, ISIC-derived, or standalone ingester.
The Crosswalk Graph: Visualizing How Systems Connect
How the interactive crosswalk ring visualization reveals the hidden connections between 1,000 classification systems and what the edges actually mean.
249 Countries, One Taxonomy Profile Each
Every country has official, regional, and recommended classification systems. WorldOfTaxonomy profiles all 249 so you always know which codes apply where.
Building a REST API for 1.2 Million Codes
FastAPI, asyncpg, and PostgreSQL full-text search - the technical decisions behind serving 1.2 million classification codes with sub-100ms response times.
From NAICS to NIC: How National Industry Codes Diverge
The US uses NAICS, India uses NIC, the EU uses NACE, Japan uses JSIC. A deep comparison of how different countries slice the same economic activity.
Life Sciences Classification: Navigating Pharma, Clinical, and Biotech Taxonomies
ATC, NDC, ICD, LOINC, NCI Thesaurus, GMDN, FDA regulations - how WorldOfTaxonomy connects the fragmented classification landscape across pharmaceuticals, clinical coding, biotech, and medical devices.