Math & Numbers

Arithmetic Sequence Calculator

Calculate the nth term, first terms, and finite sum of an arithmetic sequence

json· JSON resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/arithmetic-sequence-calculator' \
  -H 'Content-Type: application/json' \
  -d '{"firstTerm":3,"commonDifference":4,"termIndex":8,"numberOfTerms":8}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/arithmetic-sequence-calculator

Parameters

Name	Type	Required	Description
firstTerm	number	No	—
commonDifference	number	No	—
termIndex	number	No	—
numberOfTerms	number	No	—

Response format

JSON result

JSON

{
  "key": {...},
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-arithmetic-sequence-calculator": {
      "name": "arithmetic-sequence-calculator",
      "description": "Calculate the nth term, first terms, and finite sum of an arithmetic sequence",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=arithmetic-sequence-calculator",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "arithmetic-sequence-calculator",
    "arguments": {
  "firstTerm": 3,
  "commonDifference": 4,
  "termIndex": 8,
  "numberOfTerms": 8
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

Questions or issues? Contact [email protected]

Browse tools Open tool

curl -X POST 'https://api.elysiatools.com/en/api/tools/arithmetic-sequence-calculator' \ -H 'Content-Type: application/json' \ -d '{"firstTerm":3,"commonDifference":4,"termIndex":8,"numberOfTerms":8}'

Name

Type

Required

Description

firstTerm

number

—

commonDifference

number

—

termIndex

number

—

numberOfTerms

number

—

{ "mcpServers": { "elysiatools-arithmetic-sequence-calculator": { "name": "arithmetic-sequence-calculator", "description": "Calculate the nth term, first terms, and finite sum of an arithmetic sequence", "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=arithmetic-sequence-calculator", "command": "", "args": [], "env": {}, "isActive": true, "type": "sse" } } }

{ "jsonrpc": "2.0", "id": 2, "method": "tools/call", "params": { "name": "arithmetic-sequence-calculator", "arguments": { "firstTerm": 3, "commonDifference": 4, "termIndex": 8, "numberOfTerms": 8 } } }