Developer API — Curious Kelly by LOTD PBC

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Start building in under 5 minutes. Free tier includes 500 calls/day.

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📖

Daily Lessons

74,000+ unique 5-phase lessons across 19 languages with hook, story, wonder, action, and wisdom.

🔤

Word Lookup

162,253 words with IPA pronunciation, translations in 47 languages, etymology.

🔊

Text-to-Speech

AI-generated audio for any text in 47 languages, streamed as MP3/WAV.

🧩

Quiz Engine

Multiple choice, true/false, open-ended, and reflection questions per lesson.

🌐

47 Languages

English, Spanish, French, German, Portuguese, Italian, Japanese, Korean, Mandarin, Arabic, Hindi, Russian, Dutch, Swedish, Norwegian, Danish, Finnish, Polish, Czech, Turkish, Thai, Vietnamese, Indonesian, Malay, and 23 more.

⚡

Edge Speed

Cloudflare Workers globally distributed. Sub-50ms responses from 300+ locations.

Free

$0/mo

500 API calls/day
All endpoints
47 languages
Community support

Developer$29/mo
5,000 API calls/day
Text Orb AI
Fuzzy search
Email support

Pro

$99/mo

50,000 API calls/day
Streaming + webhooks
Learner state tracking
Priority support

Enterprise

$499/mo

Unlimited calls
Teams + white-label
Custom content
Dedicated support

Try with Claude MCP

Add Word Orb to Claude Desktop in one click. No API key needed for MCP.

Paste this into your claude_desktop_config.json:

{
  "mcpServers": {
    "word-orb": {
      "command": "npx",
      "args": ["-y", "@anthropic/mcp-remote", "https://mcp.thedailylesson.com/sse"]
    }
  }
}

Sample prompts to try:

"Look up the word 'serendipity' and teach me about it"

"Give me today's 5-phase lesson with a quiz at the end"

"Translate 'compassion' into 10 languages and explain the etymology"

Click any prompt to copy. 25 tools available via MCP — view manifest

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