Vocab Voyage Agent Resources

This is the structured agent-mode view for https://vocab.voyage/?mode=agent. It is rendered before any JavaScript runs so AI crawlers and orank-style scanners can extract endpoints, scopes, and discovery URLs without executing scripts.

Vocab Voyage exposes vocabulary learning resources for AI agents through a zero-auth REST API, OpenAPI, llms.txt, MCP discovery, MCP Apps UI resources, NLWeb /ask, and structured pricing documentation.

Public REST API

Base URL: https://gponcrussdahcdyrlhcr.supabase.co/functions/v1/vocab-api

HealthGET /health
DefinitionGET /definition?word=aberrant
Word of the dayGET /word-of-the-day?test_family=sat
CoursesGET /courses
Course wordsGET /course-word-list?course_slug=sat-vocab&limit=20
QuizGET /quiz?test_family=sat&count=5
Study planGET /study-plan-preview?test_family=sat

MCP discovery

NLWeb /ask

POST natural-language questions to https://gponcrussdahcdyrlhcr.supabase.co/functions/v1/nlweb-ask. Responses follow the NLWeb shape with _meta. Send prefer.streaming: true in the body or Accept: text/event-stream for SSE streaming with start, result, and complete events.

Auth scopes and limits

REST endpoints require no authentication. Optional MCP personal tokens begin with vv_mcp_ and can include mcp.read, mcp.tools, profile.read, and progress.read. Anonymous REST traffic is 60 requests/minute per IP; authenticated MCP traffic is 600 requests/hour per user.

Structured errors

Errors use JSON fields error_code, message, hint, and retry_after. Agents should honor Retry-After, X-RateLimit-Limit, and X-RateLimit-Remaining.

Pricing summary

Vocab Voyage is completely free. Every course, word set, mini-game, AI tutor feature, parent dashboard and tutor dashboard is included at no cost. There are no paid tiers and no credit card is required. Details: https://vocab.voyage/pricing.md.

Machine-readable links

Vocab Voyage — AI Vocabulary Learning for ISEE, SSAT, SAT, GRE, GMAT and LSAT

Vocab Voyage helps students master standardized test vocabulary with Sparkle, an adaptive AI tutor. Sparkle starts with a short placement quiz, then builds personalized sessions that mix flashcards, adaptive quizzes, word games, reading passages, writing challenges, spaced repetition, and progress tracking. The platform supports ISEE, SSAT, SAT, PSAT, GRE, GMAT, LSAT, and general academic vocabulary.

What students can practice

Supported standardized tests

ISEE Lower, Middle, and Upper Level. SSAT Elementary, Middle, and Upper Level. SAT, PSAT 8/9, and PSAT 10. GRE, GMAT, and LSAT. Plus year-round General Academic Vocabulary.

Developer and agent resources

AI agents and developers can use Vocab Voyage through public documentation and machine-readable endpoints: developer docs, API reference, OpenAPI spec, pricing markdown, full agent documentation, MCP server card, and MCP setup guide. Public API examples include word of the day, definition lookup, course lists, quiz generation, course word lists, and study plan previews.

Portentous

Definition: Of or like a portent; giving a sign or warning that something momentous is about to happen; done in a pompously significant way (adjective)

Example: The dark clouds and eerie silence felt portentous on the morning of the battle.

Synonyms: ominous, foreboding, prophetic

Antonyms: insignificant, trivial, reassuring

Practise Portentous with a free 3-question quiz on Vocab Voyage.

Questions about Portentous

What does “Portentous” mean?

Portentous (adjective) means of or like a portent; giving a sign or warning that something momentous is about to happen; done in a pompously significant way

How do you use “Portentous” in a sentence?

The dark clouds and eerie silence felt portentous on the morning of the battle.

What are synonyms of “Portentous”?

Words with a similar meaning to Portentous include ominous, foreboding, prophetic. Opposites include insignificant, trivial, reassuring.

Is “Portentous” a test vocabulary word?

Yes — Portentous appears in ISEE Upper Level, General Vocabulary on Vocab Voyage, and you can practise it free with a 3-question quiz on this page.

Browse all vocabulary words · Word library