Do I need an API key to use this server?

No, the Numbers API is completely free and does not require any authentication or API keys.

Can I search for facts about specific dates like my birthday?

Yes! Use the `get_date_fact` tool and provide the month and day. Your agent will return a historical event associated with that specific calendar day.

What kind of mathematical facts are available?

The `get_math_fact` tool provides properties like whether a number is a prime, Fibonacci number, perfect number, or has other unique mathematical characteristics.

Numbers API MCP Server for Cursor 5 tools — connect in under 2 minutes

Name: Numbers API
Availability: InStock
Author: Vinkius

docs.cursor.com/context/model-context-protocol

Built by Vinkius GDPR 5 Tools IDE

Cursor is an AI-first code editor built on VS Code that integrates LLM-powered coding assistance directly into the development workflow. Its Agent mode enables autonomous multi-step coding tasks, and MCP support lets agents access external data sources and APIs during code generation.

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Classic Setup·json

{
  "mcpServers": {
    "numbers-api": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

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* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About Numbers API MCP Server

Equip your AI agent with interesting facts and historical context for any number or date via the Numbers API. This server provides instant access to trivia, mathematical properties, and historical events associated with specific numbers and years. Your agent can retrieve date-specific facts, audit mathematical patterns, and provide random interesting context for numerical data without any manual search. Whether you are adding color to a presentation or verifying historical timelines, your agent acts as a dedicated numerical encyclopedia through natural conversation.

Cursor's Agent mode turns Numbers API into an in-editor superpower. Ask Cursor to generate code using live data from Numbers API and it fetches, processes, and writes. all in a single agentic loop. 5 tools appear alongside file editing and terminal access, creating a unified development environment grounded in real-time information.

What you can do

Trivia Discovery — Retrieve fun and unusual facts for any integer or random number.
Math Intelligence — Access technical mathematical properties and interesting patterns for specific numbers.
Date Auditing — Fetch historical events that occurred on any specific month and day of the year.
Yearly Context — Retrieve significant historical milestones and facts for any given year.
Random Inspiration — Get a completely random fact across all categories to discover new knowledge.

The Numbers API MCP Server exposes 5 tools through the Vinkius. Connect it to Cursor in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect Numbers API to Cursor via MCP

Follow these steps to integrate the Numbers API MCP Server with Cursor.

Open MCP Settings

Press Cmd+Shift+P (macOS) or Ctrl+Shift+P (Windows/Linux) → search "MCP Settings"

Add the server config

Paste the JSON configuration above into the mcp.json file that opens

Save the file

Cursor will automatically detect the new MCP server

Start using Numbers API

Open Agent mode in chat and ask: "Using Numbers API, help me...". 5 tools available

Why Use Cursor with the Numbers API MCP Server

Cursor AI Code Editor provides unique advantages when paired with Numbers API through the Model Context Protocol.

Agent mode turns Cursor into an autonomous coding assistant that can read files, run commands, and call MCP tools without switching context

Cursor's Composer feature can generate entire files using real-time data fetched through MCP. no copy-pasting from external dashboards

MCP tools appear alongside built-in tools like file reading and terminal access, creating a unified agentic environment

VS Code extension compatibility means your existing workflow, keybindings, and extensions all work alongside MCP tools

Numbers API + Cursor Use Cases

Practical scenarios where Cursor combined with the Numbers API MCP Server delivers measurable value.

Code generation with live data: ask Cursor to generate a security report module using live DNS and subdomain data fetched through MCP

Automated documentation: have Cursor query your API's tool schemas and generate TypeScript interfaces or OpenAPI specs automatically

Infrastructure-as-code: Cursor can fetch domain configurations and generate corresponding Terraform or CloudFormation templates

Test scaffolding: ask Cursor to pull real API responses via MCP and generate unit test fixtures from actual data

Numbers API MCP Tools for Cursor (5)

These 5 tools become available when you connect Numbers API to Cursor via MCP:

get_date_fact

Get a fact about a date

get_math_fact

Get a mathematical fact about a number

get_random_fact

Get a random fact

get_trivia_fact

Get a trivia fact about a number

get_year_fact

Get a fact about a year

Example Prompts for Numbers API in Cursor

Ready-to-use prompts you can give your Cursor agent to start working with Numbers API immediately.

"Tell me a trivia fact about the number 42."

"What happened on October 24th in history?"

"Give me a random math fact."

Troubleshooting Numbers API MCP Server with Cursor

Common issues when connecting Numbers API to Cursor through the Vinkius, and how to resolve them.

Tools not appearing in Cursor

Ensure you are in Agent mode (not Ask mode). MCP tools only work in Agent mode.

Server shows as disconnected

Check Settings → Features → MCP and verify the server status. Try clicking the refresh button.

Numbers API + Cursor FAQ

Common questions about integrating Numbers API MCP Server with Cursor.

What is Agent mode and why does it matter for MCP?

Agent mode is Cursor's autonomous execution mode where the AI can perform multi-step tasks: reading files, editing code, running terminal commands, and calling MCP tools. Without Agent mode, Cursor operates in a simpler ask-and-answer mode that doesn't support tool calling. Always ensure you're in Agent mode when working with MCP servers.

Where does Cursor store MCP configuration?

Cursor looks for MCP server configurations in a mcp.json file. You can configure servers at the project level (.cursor/mcp.json in your project root) or globally (~/.cursor/mcp.json). Project-level configs take precedence.

Can Cursor use MCP tools in inline edits?

No. MCP tools are only available in Agent mode through the chat panel. Inline completions and Tab suggestions do not trigger MCP tool calls. This is by design. tool calls require user visibility and approval.

How do I verify MCP tools are loaded?

Open Settings → Features → MCP and look for your server name. A green indicator means the server is connected. You can also check Agent mode's available tools by clicking the tools dropdown in the chat panel.