worldoftaxonomy

worldoftaxonomy is a skill for Claude Code, Codex from colaberry/WorldOfTaxonomy. It costs 117 tokens per session (1,262 once invoked), scanned A, original, MIT.

A classification lookup service covering systems for industries, occupations, diseases, products, trade, and documents. It can assign standard codes, explore classification hierarchies, and translate codes between systems such as NAICS, ISIC, ICD, and HS.

In plain words
What is it for?
Use it to classify free-text descriptions, find parent or related codes, translate codes between standards, compare systems, or inspect crosswalk data.
Why use it?
Different countries and fields use different classification systems, making equivalent codes difficult to find by hand. This service connects those systems and provides cross-system mappings and provenance information.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/colaberry/worldoftaxonomy/anthropic
Any agent
npx skills add colaberry/WorldOfTaxonomy --skill anthropic
Clone the repo
git clone --depth 1 https://github.com/colaberry/WorldOfTaxonomy

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for worldoftaxonomy

README.md
[![agentmods](https://agentmods.dev/badge/skills/colaberry/worldoftaxonomy/anthropic.svg)](https://agentmods.dev/skills/colaberry/worldoftaxonomy/anthropic)
Your own site
<a href="https://agentmods.dev/skills/colaberry/worldoftaxonomy/anthropic"><img src="https://agentmods.dev/badge/skills/colaberry/worldoftaxonomy/anthropic.svg" alt="Measured on agentmods" height="20"></a>
Per session 117 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,262 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00117 $0.01262
Opus 5 $0.00059 $0.00631
Sonnet 5 $0.00023 $0.00252
Haiku 4.5 $0.00012 $0.00126

Measured 4d ago against content hash 7a38fea9090b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

worldoftaxonomy scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/anthropic/SKILL.md · 88 lines

How it starts

The opening of the file, as written. The whole thing — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.

WorldOfTaxonomy Skill

What this does

Turns any free-text question about industry, occupation, medical, trade, or regulatory classification into a grounded answer backed by 1,000+ official taxonomies linked as a single knowledge graph.

When to invoke

Use this skill when the user wants to:

  • Assign a standard code to a business description, product, occupation, diagnosis, or document
  • Translate a code between systems (NAICS 2022 <-> ISIC Rev 4, SOC 2018 <-> ISCO-08, ICD-10-CM <-> ICD-10-GM, HS 2022 <-> CPC v2.1, etc.)
  • Find every cross-system equivalent of a given code
  • Browse hierarchy (children, ancestors, siblings, subtree) of a system
  • Compare two systems' coverage or structure
  • Audit data provenance and crosswalk density across systems

Do NOT invoke for general explanations of what NAICS/ISIC/ICD are - answer from general knowledge unless the user wants live data.

How to use

Primary: REST API

Base URL: https://worldoftaxonomy.com/api/v1

Auth: Authorization: Bearer wot_<32hex> (get a key at https://worldoftaxonomy.com/dashboard). Anonymous access works at 30 req/min; authenticated keys get 1000-50000 req/min depending on tier.

Core endpoints:

GET  /systems                                       # list systems
GET  /systems/{id}                                  # detail + roots
GET  /systems/{id}/nodes/{code}                     # node detail
GET  /systems/{id}/nodes/{code}/children
GET  /systems/{id}/nodes/{code}/ancestors
GET  /systems/{id}/nodes/{code}/siblings
GET  /systems/{id}/nodes/{code}/equivalences        # crosswalk edges
GET  /search?q=<term>&system=<optional>
POST /classify                                      # body: {"description": "..."}
GET  /equivalences/stats                            # coverage matrix

OpenAPI spec: https://worldoftaxonomy.com/api/v1/openapi.json

Secondary: MCP server

For MCP-aware clients, install world_of_taxonomy from the GitHub repo and run python -m world_of_taxonomy mcp as a stdio server. Tools include classify_business, translate_code, translate_across_all_systems, get_equivalences, get_crosswalk_coverage, get_system_diff, explore_industry_tree, and list_crosswalks_by_kind.

Read the full file on GitHub · 88 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 88 lines · 117 tokens per session scan A 7a38fea9090b

Subscribe to this mod's changes

worldoftaxonomy is a skill published in the GitHub repository colaberry/WorldOfTaxonomy (9 stars, last pushed 1mo ago), licensed MIT. It adds 117 tokens to every session and 1,262 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.