Environments & Chains

Use this page to choose the correct base URL, chain ID, product type, and spender assumptions. These docs focus the MondayTrade RWA API.

Base URL

Production Trading API:

https://mainnet-api.monday.trade/rwa/trading

All endpoint paths start with /api/v1.

HMAC authentication uses the path only:

/api/v1/symbols

Do not sign the domain or /rwa/trading prefix.

Product Context

Every request must include both:

Header	Meaning
x-api-chain-id	Chain context for the request
x-api-p	Product context. Use MondayTrade for the MondayTrade API.

The API key must have a matching chainId + productType + access permission.

Supported Chain IDs

Chain ID	Chain
8453	Base Mainnet
1	Ethereum Mainnet
143	Monad Mainnet
11155111	Ethereum Sepolia
10143	Monad Testnet
84532	Base Sepolia

Mainnet Contract Addresses

MondayTrade production uses the same deterministic proxy addresses on Base, Monad, and Ethereum:

Contract	Address
StockRouter	0x4f090d817fd83753988a7b0c1d76f170f8461be8
Cashier	0x8c1b182bb0fe4e8407404ffe37c974d6dacef3a9
Stock	0x6d202d2f78aa26a7db51491416abf7f7a5003aac
OneClickRouter	0x102c30ac544aed8cbf838fdc1b1677ff16df0e65

Mainnet Cash Tokens and Approval Spenders

Chain ID	Chain	Cash token	Approval spender (StockRouter)
8453	Base Mainnet	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	0x4f090d817fd83753988a7b0c1d76f170f8461be8
143	Monad Mainnet	0x754704Bc059F8C67012fEd69BC8A327a5aafb603	0x4f090d817fd83753988a7b0c1d76f170f8461be8
1	Ethereum Mainnet	0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48	0x4f090d817fd83753988a7b0c1d76f170f8461be8

Production cash config from mondaytrade-contracts config/production:

Config	Value
Deposit rate	1
Withdrawal rate	0.9979
Minimum amount	90 cash-token units
creditBufferCapacity	20000 mUSD
withdrawalBufferCapacity	10000 cash-token units
instantThresholdDivisor	5

Request Context Checklist

Before sending state-changing requests, confirm:

Item	Expected
Base URL	https://mainnet-api.monday.trade/rwa/trading
HMAC URI	/api/v1/... only
x-api-chain-id	Matches wallet network
x-api-p	Exact product value
API key scope	Allows requested chain/product/access
Deposit spender	Matches chain/product
Wallet allowance	Sufficient before deposit

Common Mismatches

Mismatch	Symptom	Fix
Wallet on wrong chain	Tx fails or hits wrong contract	Switch wallet to x-api-chain-id
API key lacks product scope	Unauthorized	Grant correct chainId + x-api-p + access
Wrong x-api-p casing	Unsupported product	Use exact MondayTrade
Wrong spender	Deposit tx reverts	Use spender for chain/product
Wrong HMAC URI	Unauthorized	Authenticate /api/v1/... only