Finance
Annuity Calculator
Calculate annuity payments, present value, and future value
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/annuity-calculator' \
-H 'Content-Type: application/json' \
-d '{"paymentAmount":1000,"interestRate":5,"years":20,"periodsPerYear":"12","calculationType":"future-value","presentValue":0,"futureValue":0}'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/annuity-calculatorParameters
| Name | Type | Required | Description |
|---|---|---|---|
| paymentAmount | number | Yes | — |
| interestRate | number | Yes | — |
| years | number | Yes | — |
| periodsPerYear | select | Yes | — |
| calculationType | select | Yes | — |
| presentValue |
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-annuity-calculator": {
"name": "annuity-calculator",
"description": "Calculate annuity payments, present value, and future value",
"baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=annuity-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": "annuity-calculator",
"arguments": {
"paymentAmount": 1000,
"interestRate": 5,
"years": 20,
"periodsPerYear": "12",
"calculationType": "future-value",
"presentValue": 0,
"futureValue": 0
}
}
}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]