Calculator
Perform quick, reliable arithmetic including addition, subtraction, multiplication, and division. Speed up everyday calculations and reduce errors across your workflows.
How to connect
Same URL, five paste targets. Ready surface · Auth required. Not a safe-to-install badge. Handshake this URL
Paste into Settings → MCP or .cursor/mcp.json.
{
"mcpServers": {
"aitutor3-calculator-mcp-test": {
"url": "https://calculator-mcp-test--aitutor3.run.tools"
}
}
}
Settings → Connectors → Add → Custom → Web. Paste the URL. Enable in a new chat.
Claude → Settings → Connectors → Add → Custom → Web
Name: Calculator
URL: https://calculator-mcp-test--aitutor3.run.tools
OAuth only if this server requires it.
Save, start a new chat, enable the connector.
Developer mode custom connector. ChatGPT cannot reach localhost.
Settings → Apps & Connectors → Advanced → Developer mode ON
Create custom connector
Name: Calculator
MCP server URL: https://calculator-mcp-test--aitutor3.run.tools
Auth: none unless the server requires OAuth
New chat → + → Developer mode → enable the connector
Register the HTTPS URL, then claude mcp list.
claude mcp add --transport http aitutor3-calculator-mcp-test \
https://calculator-mcp-test--aitutor3.run.tools
Pass on session/new as mcpServers when the agent advertised HTTP MCP.
[
{
"type": "http",
"name": "aitutor3-calculator-mcp-test",
"url": "https://calculator-mcp-test--aitutor3.run.tools"
}
]
Paste into a README or docs site. The widget loads snippets from Influzer — still not a SAFE badge.
Same handshake clock as this listing (overlay / warm / seed; live tools/list only if that is missing). Indigo is live_ok, amber is auth_required, gray is unreachable. Not a SAFE badge. Stdio listings have no badge.
[](https://www.influzer.ai/mcp/probe?url=https%3A%2F%2Fcalculator-mcp-test--aitutor3.run.tools)
<div data-influzer-install="aitutor3-calculator-mcp-test"></div>
<script async src="https://www.influzer.ai/embed/install.js"></script>
https://www.influzer.ai/embed/mcp/aitutor3-calculator-mcp-test.md
JSON: https://www.influzer.ai/api/v1/install/aitutor3-calculator-mcp-test
Recipes using this server
No published recipes yet for this server.
Listing quality
Observable facts from our catalog and daily probe — not a safe-to-install badge.
- Surface
- Ready surface
- Live handshake
- Auth required
- Auth gate
- Auth gate
- Tools source
- tools/list (live)
Observable catalog + probe facts — not a safe-to-install badge.
Tools
(4)-
addAdd two numbers and return the sum.
-
subSubtract the second number from the first.
-
mulMultiply two numbers and return the product.
-
divDivide two numbers (floating point division).
Tool source: tools/list (live) · last probed 2026-10-11