Summary
Wraps numbersapi.com to pull trivia, math properties, and historical facts about numbers and dates. You get four tools: number_fact for general trivia (like why 42 is interesting), date_fact for what happened on March 14th, math_fact for prime factorizations and mathematical significance, and random_fact when you want serendipity. No authentication required since the underlying API is free and open. Hosted through Pipeworx's gateway, which means you can either point directly at the NumbersAPI endpoint or connect to their full gateway for 673+ data sources. Useful when you're building educational tools, chat features that need conversational hooks, or anything that benefits from number-based trivia on demand.
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mcp-numbersapi
NumbersAPI MCP — wraps numbersapi.com (free, no auth)
Part of Pipeworx — an MCP gateway connecting AI agents to 673+ live data sources.
Tools
| Tool | Description |
|---|---|
number_fact | Get trivia facts about a specific number (e.g., 42, 1729). Returns the fact text and number. |
date_fact | Get historical facts about a calendar date (e.g., "3/14" for March 14). Returns the fact and date. |
math_fact | Get mathematical properties about a number (e.g., 16, 256)—prime factors, sequences, mathematical significance. Returns math-focused trivia. |
random_fact | Get a random trivia fact about a number. Returns the fact and the randomly chosen number. Use when you want surprising facts without specifying one. |
Quick Start
Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):
{
"mcpServers": {
"numbersapi": {
"url": "https://gateway.pipeworx.io/numbersapi/mcp"
}
}
}
Or connect to the full Pipeworx gateway for access to all 673+ data sources:
{
"mcpServers": {
"pipeworx": {
"url": "https://gateway.pipeworx.io/mcp"
}
}
}
Using with ask_pipeworx
Instead of calling tools directly, you can ask questions in plain English:
ask_pipeworx({ question: "your question about Numbersapi data" })
The gateway picks the right tool and fills the arguments automatically.
More
License
MIT
Featured
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →