Retirement Savings Calculator

Project your balance at retirement, or solve the monthly contribution needed to hit a target.

Free tier eligible — 500 calls/month with a free key from /pricing; x402 pay-per-call above quota.

Parameters

Parameter	Type	Required	Description
`current_age`	number	required	Current age in years
`retirement_age`	number	required	Target retirement age in years
`current_savings`	number	optional	Current retirement savings in USD
`monthly_contribution`	number	optional	Monthly contribution in USD (project mode)
`annual_return`	number	optional	Expected annual return as a PERCENT (default 7)
`target_balance`	number	optional	Desired balance at retirement, USD (solve mode)
`inflation`	number	optional	Annual inflation as a PERCENT (default 0)

Call it over MCP (JSON-RPC 2.0)

curl -s https://wingmanprotocol.com/mcp \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": {"name": "retirement", "arguments": {"current_age": 35, "retirement_age": 35}}}'

Or plain HTTP

curl -s https://wingmanprotocol.com/tools/retirement \
  -H 'Content-Type: application/json' \
  -d '{"current_age": 35, "retirement_age": 35}'

Try it live

Edit the JSON and run it — this POSTs to https://wingmanprotocol.com/tools/retirement from your browser.

This tool is x402-metered — agents pay per call with USDC on Base. The 402 response below is the standard x402 payment-requirements envelope: sign the EIP-3009 authorization and retry with the X-Payment header, or get a free key at /pricing (500 calls/month, no card, no crypto).