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SAFE / Convertible Note Calculator

Conversion price and shares for a SAFE with a cap and/or discount.

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

Parameters

ParameterTypeRequiredDescription
investmentnumberrequiredInvestment amount in USD
round_price_per_sharenumberrequiredPriced round's price per share in USD
valuation_capnumberoptionalValuation cap in USD
pre_round_sharesnumberoptionalPre-round fully-diluted shares (for cap price)
discount_pctnumberoptionalDiscount percent off the round price

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": "safe_note", "arguments": {"investment": 100, "round_price_per_share": 400000}}}'

Or plain HTTP

curl -s https://wingmanprotocol.com/tools/safe_note \
  -H 'Content-Type: application/json' \
  -d '{"investment": 100, "round_price_per_share": 400000}'

Try it live

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

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