Markets

GET /v1/metadata/exchange-info is the authoritative source for currently enabled markets and their parameters.

Production

Market ID	Market	Type	Tick size	Qty step size	Min notional
1	BTC-USDC	Spot	1 USDC	100 satoshi (0.000001 BTC)	1 USDC

Coming soon: ETH-USDC & SOL-USDC.

Sandbox

Market ID	Market	Type	Tick size	Qty step size	Min notional
1	BTC-USDC	Spot	1 USDC	100 satoshi (0.000001 BTC)	1 USDC
2	ETH-USDC	Spot	0.1 USDC	100,000 gwei (0.0001 ETH)	1 USDC
3	SOL-USDC	Spot	0.001 USDC	1,000,000 lamport (0.001 SOL)	1 USDC

See Data Formats for converting prices to ticks and quantities to native units.

Exchange info example

curl https://api.pax.markets/v1/metadata/exchange-info

{
  "assets": [
    { "asset_id": "1", "asset_name": "BTC", "native_unit_name": "satoshi", "num_native_units": "100000000" },
    { "asset_id": "5", "asset_name": "USDC", "native_unit_name": "micro USDC", "num_native_units": "1000000" }
  ],
  "markets": [
    {
      "market_id": "1",
      "market_name": "BTC-USDC",
      "market_type": 1,
      "base_asset_id": "1",
      "quote_asset_id": "5",
      "qty_unit_name": "satoshi",
      "tick_unit_name": "micro USDC",
      "tick_size": "1000000",       // 1 USDC
      "qty_step_size": "100",       // 100 sats, see "qty_unit_name"
      "max_qty": "214748364700",
      "notes": "",
      "max_ticks": 2147483646,
      "min_notional": "1000000"     // 1 USDC
    }
  ],
  "fees": {
    "lambda_taker_fee_bps": "0.5",
    "lambda_maker_spread_multiplier": "0.25",
    "lambda_maker_fee_cap_bps": "2",
    "free_tier_rebate_multiplier": "0.5",
    "free_tier_rebate_cap_bps": "0.25"
  }
}