Aster Deposit Fund

Base URL: https://www.asterdex.com/bapi/futures/v1/public/future/. Public endpoints; no auth.

Env

Var	Required	Description
ASTER_DEPOSIT_PRIVATE_KEY	Yes (deposit)	Wallet private key (0x + 64 hex). Used to sign on-chain deposit txs. Never log or echo.
ASTER_WALLET_ADDRESS	Yes (balance)	Public wallet address. Used by balance.mjs for read-only queries.
ETH_RPC_URL	Recommended	Private Ethereum RPC (Alchemy, Infura). Public fallback used if unset.
BSC_RPC_URL	Recommended	Private BSC RPC.
ARBITRUM_RPC_URL	Recommended	Private Arbitrum RPC.

Supported chains

Chain	chainId
ETH (Ethereum)	1
BSC	56
Arbitrum	42161

User confirmation

MANDATORY — Before executing ANY deposit transaction, the agent MUST:

1. Display a clear summary to the user:
   • Chain and chainId
   • Asset symbol and contract address (for ERC20)
   • Amount (human-readable AND raw wei/units)
   • Deposit (treasury) address
   • Broker ID (if non-default)
   • Estimated gas cost
2. Ask for explicit textual confirmation (e.g. "Type 'confirm' to proceed" or "yes/no").
3. Do NOT assume consent from a prior message, implicit agreement, or context.
4. Do NOT batch multiple deposits without individual confirmation for each.
5. If the user cancels or does not confirm, abort immediately with no on-chain action.

Failure to confirm is a critical safety violation in an autonomous agent context.

Flow

1. Supported assets — GET aster/withdraw/assets?chainIds=<chainId>&networks=EVM&accountType=perp. Response data[]: name, contractAddress, decimals, isNative, chainId. Use to pick asset and token contract for ERC20.
2. Deposit address — GET web3/ae/deposit-address?chainId=<chainId>. Response data = deposit address (string). Same address for native and ERC20 on that chain. The address is validated against a hardcoded whitelist in common.mjs (SEC-01).
3. Balance check — Verify the wallet has sufficient balance for the deposit amount + gas BEFORE submitting any transaction (SEC-06).
4. User confirmation — See above. Always confirm before executing.
5. On-chain send — From wallet (key from env), sign with appropriate RPC for chain:
   • Native: treasury.depositNative(broker) with value = amount (wei).
   • ERC20: token.approve(treasury, amount) then treasury.deposit(token, amount, broker).
   • All transactions use an explicit gas limit (SEC-09) and wait for multiple confirmations per chain (SEC-10).

Security

• Private key only from env; never log, echo, or pass via CLI args.
• Key is validated (0x + 64 hex chars) and removed from process.env after account derivation (SEC-02).
• Error output is sanitized to prevent accidental key leakage in logs (SEC-02).
• Deposit address is checked against a hardcoded whitelist to prevent oracle attacks (SEC-01).
• Public RPCs emit a warning; use private RPCs (Alchemy, Infura) in production (SEC-04).
• balance.mjs never loads the private key; it uses the public address only (SEC-07).

Broker ID

The --broker parameter (default: 1) identifies the Aster broker account that the deposit is attributed to. Broker 1 is the primary/default Aster broker. Only change this if you know the target broker ID. An incorrect broker ID may result in funds being inaccessible from the expected account (SEC-11).

Scripts (viem)

Optional: scripts/ — Bun + viem. Install: cd skills/aster-deposit-fund/scripts && bun install.

Script	Purpose
deposit.mjs	Deposit: ASTER_DEPOSIT_PRIVATE_KEY=0x... bun run deposit.mjs --chain <eth|bsc|arbitrum> --asset <SYMBOL> --amount <amount> [--broker <id>] [--dry-run]
balance.mjs	Wallet balances (read-only): bun run balance.mjs --chain <eth|bsc|arbitrum> --address <0x...>

See .env.example in the repo root for all env vars.

Payload shapes: reference.md.