mcpbeat

Calculator MCP Server

com.mcpcalc/calculator
answering

Calculator is answering right now. Last checked moments ago. It exposes 10 tools.

Calculators accessible via MCP with real-time collaborative sessions and shareable URLs.

Uptime history 40 hours of history
40 hours agonow
100.0%
Uptime 24h
92 of 92 checks
10
Tools
read from the server
626 ms
Response time
average over 24h
open, no key
Access
streamable-http

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 0 min ago.

run in your terminal
claude mcp add calculator --transport http https://mcpcalc.com/api/v1/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "calculator": {
      "url": "https://mcpcalc.com/api/v1/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.calculator]
url = "https://mcpcalc.com/api/v1/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "calculator": {
      "url": "https://mcpcalc.com/api/v1/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "calculator": {
      "url": "https://mcpcalc.com/api/v1/mcp"
    }
  }
}

Available tools 10

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

calculate
calculate
Run a calculation and get results + prefilled URL
calculate_cas
Evaluate one or more headless CAS expressions server-side (MCP-only numeric mode). Unsupported expressions return a GUI handoff link.
calculate_cas_headless
Alias of calculate_cas. Headless MCP-only CAS evaluator; if unsupported features are requested, returns GUI handoff details.
session
create_session
Create a new interactive session for any calculator and return the session URL
get_session_state
Retrieve the current field values, computation transcript, and pending message queue for an active session
calculator
get_calculator_schema
Get the input schema for a specific calculator
calculators
list_calculators
List available calculators, optionally filtered by category
close
close_session
Close a session and optionally persist a snapshot of its final state
generate
generate_prefilled_url
Generate a prefilled URL without running calculation
push
push_session_action
Push actions into a session's message queue (set fields, submit computation, trigger plot, etc.)

Endpoints

URLTransportStateLatencyChecked
https://mcpcalc.com/api/v1/mcp streamable-http answering 980 ms 0 min ago

Calculator — questions

Answers built from our own checks of this server.

What can Calculator do?
It exposes 10 tools, read directly from the server on our last check. Among them: calculate, calculate_cas, calculate_cas_headless, close_session, create_session, generate_prefilled_url and 4 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
What is Calculator mostly used for?
Its tools cluster around calculate and session. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.
Is Calculator working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 626 ms. The bar chart above shows every period we have measured.
How do I connect Calculator?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Calculator need an API key?
No. Calculator completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 10 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Calculator?
It answers our handshake in 626 ms on average, which is faster than 15% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.