How OpenAI can use
Word Orb

Verified vocabulary infrastructure for GPTs and the Assistants API

wisdom
⌄
The Scenario

ChatGPT has 300M+ weekly active users. A custom GPT teaches a “word of the day” with verified content — not hallucinated definitions. The GPT calls Word Orb for a deterministic definition with IPA, etymology, and 47-language translations, delivers a structured 5-phase lesson via Lesson Orb, and runs a comprehension check with Quiz Orb. The Assistants API’s function calling makes each Orb endpoint a tool. Same word, same definition, every time — no variance across sessions or users.

1
Word Orb looks up the word
One API call returns a verified definition, 47 translations, pronunciation audio, and etymology.
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2
Lesson Orb delivers a structured lesson
A 5-phase lesson with the strategist teaching archetype.
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3
Quiz Orb assesses comprehension
Interactive assessment aligned to the lesson. Try it yourself.
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4
The Knowledge Graph connects everything
30,526 connections link words to lessons to assessments.
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Why this matters for OpenAI

Add Word Orb to your GPTs

Start with a company-ready review flow at Orb Verified, or open the quickstart if your team wants to test the API first.

162K
Words
19
Lesson Languages
24K
Assessments
30K
Graph Links

Technical Details

API Base: https://wordorb.ai

MCP Server: https://wordorb.ai/mcp

REST: curl https://wordorb.ai/api/word/courage -H "X-API-Key: YOUR_KEY"

GitHub: github.com/nicoletterankin/word-orb

Response format: Deterministic JSON · Sub-5ms edge delivery via Cloudflare Workers · No origin server

Get Orb Verified

Verified educational content for OpenAI. Nine gates. One standard. Trusted by schools.

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