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POST
/
v2
/
tokenized_assets
/
transact
/
sell
Python (SDK)
from compass_api_sdk import CompassAPI, models


with CompassAPI(
    api_key_auth="<YOUR_API_KEY_HERE>",
) as compass_api:

    res = compass_api.tokenized_assets.tokenized_assets_transact_sell(token_in="<value>", token_out="<value>", amount_in=8512.47, owner="<value>", chain=models.Chain.ETHEREUM, slippage="0.5", gas_sponsorship=False)

    # Handle response
    print(res)
{
  "estimated_amount_out": "<string>",
  "transaction": {
    "chainId": "0x2105",
    "data": "0x1688f0b900000000000000000000000029fcb43b46531bca003ddc8fcb67ffe91900c762000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000675f4a3d",
    "from": "0x4A83b4413CF41C3244027e1590E35a0F48403F0c",
    "gas": "0x7a120",
    "maxFeePerGas": "0x59682f00",
    "maxPriorityFeePerGas": "0x3b9aca00",
    "nonce": "0x5",
    "to": "0x4e1DCf7AD4e460CfD30791CCC4F9c8a4f820ec67",
    "value": "0x0"
  },
  "eip_712": {
    "domain": {
      "chainId": 8453,
      "verifyingContract": "0x6B90E8B4E3E971E74C1A47a3a20976377E2dB4b1"
    },
    "message": {
      "baseGas": "0",
      "data": "0x8d80ff0a0000000000000000000000000000000000000000000000000000000000000020",
      "gasPrice": "0",
      "gasToken": "0x0000000000000000000000000000000000000000",
      "nonce": "7",
      "operation": 1,
      "refundReceiver": "0x0000000000000000000000000000000000000000",
      "safeTxGas": "0",
      "to": "0x93C23AAE4793C14D6DF35D2A2A2234204e1559dA",
      "value": "0"
    },
    "primaryType": "SafeTx",
    "types": {
      "EIP712Domain": [
        {
          "name": "chainId",
          "type": "uint256"
        },
        {
          "name": "verifyingContract",
          "type": "address"
        }
      ],
      "SafeTx": [
        {
          "name": "to",
          "type": "address"
        },
        {
          "name": "value",
          "type": "uint256"
        },
        {
          "name": "data",
          "type": "bytes"
        },
        {
          "name": "operation",
          "type": "uint8"
        },
        {
          "name": "safeTxGas",
          "type": "uint256"
        },
        {
          "name": "baseGas",
          "type": "uint256"
        },
        {
          "name": "gasPrice",
          "type": "uint256"
        },
        {
          "name": "gasToken",
          "type": "address"
        },
        {
          "name": "refundReceiver",
          "type": "address"
        },
        {
          "name": "nonce",
          "type": "uint256"
        }
      ]
    }
  }
}

Authorizations

​
x-api-key
string
header
required

Your Compass API Key. Get your key here.

Body

application/json

Buy or sell a swap-traded tokenized asset inside the product account.

Applies to RWA yield assets (Midas mTokens). Equities trade via the order endpoints instead.

​
token_in
string
required

Token to spend. For a buy this is any supported token (e.g. 'USDC'); for a sell it must be a swap-traded tokenized asset (e.g. 'mTBILL').

Examples:

"USDC"

"mTBILL"

​
token_out
string
required

Token to receive. For a buy this must be a swap-traded tokenized asset (e.g. 'mTBILL'); for a sell it is any supported token.

Examples:

"mTBILL"

"USDC"

​
amount_in
required

Human-readable amount of token_in to trade (token units, not wei).

Required range: x > 0
Example:

500

​
owner
string
required

The owner's wallet address.

​
chain
enum<string>
required

Network to trade on. Midas RWA assets exist on Ethereum and Base.

Available options:
base,
ethereum,
arbitrum,
hyperevm,
tempo
​
slippage
default:0.5

Maximum slippage tolerance as a percentage (e.g., 0.5 = 0.5%).

Example:

0.5

​
gas_sponsorship
boolean
default:false

When true, returns an EIP-712 payload for gas-sponsored execution instead of an unsigned transaction.

Response

Successful Response

Unsigned trade execution for the owner to sign.

Exactly one of transaction (gas_sponsorship=false) or eip_712 (gas_sponsorship=true) is set.

​
estimated_amount_out
string
required

Estimated amount of token_out received (human-readable units).

Pattern: ^(?!^[-+.]*$)[+-]?0*\d*\.?\d*$
​
transaction
UnsignedTransaction · object

Unsigned transaction executing the trade in the product account.

Example:
{
  "chainId": "0x2105",
  "data": "0x1688f0b900000000000000000000000029fcb43b46531bca003ddc8fcb67ffe91900c762000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000675f4a3d",
  "from": "0x4A83b4413CF41C3244027e1590E35a0F48403F0c",
  "gas": "0x7a120",
  "maxFeePerGas": "0x59682f00",
  "maxPriorityFeePerGas": "0x3b9aca00",
  "nonce": "0x5",
  "to": "0x4e1DCf7AD4e460CfD30791CCC4F9c8a4f820ec67",
  "value": "0x0"
}
​
eip_712
BatchedSafeOperationsResponse · object

EIP-712 payload for gas-sponsored execution.

Example:
{
  "domain": {
    "chainId": 8453,
    "verifyingContract": "0x6B90E8B4E3E971E74C1A47a3a20976377E2dB4b1"
  },
  "message": {
    "baseGas": "0",
    "data": "0x8d80ff0a0000000000000000000000000000000000000000000000000000000000000020",
    "gasPrice": "0",
    "gasToken": "0x0000000000000000000000000000000000000000",
    "nonce": "7",
    "operation": 1,
    "refundReceiver": "0x0000000000000000000000000000000000000000",
    "safeTxGas": "0",
    "to": "0x93C23AAE4793C14D6DF35D2A2A2234204e1559dA",
    "value": "0"
  },
  "primaryType": "SafeTx",
  "types": {
    "EIP712Domain": [
      { "name": "chainId", "type": "uint256" },
      {
        "name": "verifyingContract",
        "type": "address"
      }
    ],
    "SafeTx": [
      { "name": "to", "type": "address" },
      { "name": "value", "type": "uint256" },
      { "name": "data", "type": "bytes" },
      { "name": "operation", "type": "uint8" },
      { "name": "safeTxGas", "type": "uint256" },
      { "name": "baseGas", "type": "uint256" },
      { "name": "gasPrice", "type": "uint256" },
      { "name": "gasToken", "type": "address" },
      {
        "name": "refundReceiver",
        "type": "address"
      },
      { "name": "nonce", "type": "uint256" }
    ]
  }
}