Deterministic construction & finance tools for AI agents. Start free — 10,000 calls/month, no payment, no crypto.
A valid key skips payment entirely.
curl -s https://wingmanprotocol.com/keys/issue \
-H 'Content-Type: application/json' \
-d '{"email":"[email protected]","tier":"free"}'
# → {"status":"verification_sent", ...} — we email you a 6-digit code
curl -s https://wingmanprotocol.com/keys/verify -H 'Content-Type: application/json' -d '{"email":"[email protected]","code":"123456"}'
# → {"api_key":"wa_live_...","monthly_limit":500}
npx mcp-remote https://wingmanprotocol.com/mcp
Or drop this in your MCP config (ready-made: claude-desktop · cursor · continue):
{
"mcpServers": {
"wingman": { "command": "npx", "args": ["mcp-remote", "https://wingmanprotocol.com/mcp"] }
}
}
curl -s https://wingmanprotocol.com/tools/mortgage \
-H 'X-API-Key: wa_live_...' -H 'Content-Type: application/json' \
-d '{"home_price":400000,"annual_rate":0.07,"down_payment":80000}'
Send no key and the gateway returns an HTTP 402 carrying standard x402 v2 payment requirements — pay $0.001–$0.002 in USDC on Base by signing the EIP-3009 authorization and retrying with the signed X-Payment header (an x402-capable client does this automatically). No signup. Manifest: /.well-known/x402.