Exact trading fee for one order on Kalshi, Polymarket US or polymarket.com, from...
https://x402.swaphunt.dev/v1/pm/feesOverview
Exact trading fee for one order on Kalshi, Polymarket US or polymarket.com, from the official fee schedules: fee in USD and as % of trade value, the break-even exit price for a round trip after both fees, and the rates version (as_of date, Kalshi fee schedule version). Kalshi rounds fee + position cost up to a whole centicent; polymarket.com needs a category. Fees only, no market data
Protocol
x402
Price
$0.0050
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
x402
Source
bazaar
Indexed
2026-11-11 16:08:22
Health
Status
unknown
Latency (p50)
—
Uptime (30d)
—
Reliability Score
—
Last Checked
Never
Last Healthy
Never
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
—
Asset Verified
—
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"contracts": "100",
"maker": false,
"platform": "kalshi",
"price": "0.50",
"side": "buy"
},
"type": "http"
}
Output Schema
{
"example": {
"break_even": {
"exit_fee_usd": 1.7388,
"exit_price": 0.54,
"move_cents": 4,
"profit_at_exit_usd": 0.5112
},
"contracts": 100,
"fee_pct_of_trade_value": 3.5,
"fee_usd": 1.75,
"platform": "kalshi",
"price": 0.5,
"rates": {
"as_of": "2026-11-10",
"fee_schedule_version": "7.7.26",
"pmfees_version": "0.1.0"
},
"role": "taker",
"side": "buy",
"trade_value_usd": 50
},
"type": "json"
}