Dry Run

Simulate any write operation before broadcasting. Uses MoonPay CLI's simulation mode under the hood. Returns quotes, fees, and expected output without committing to the blockchain.

Why

Autonomous agents should never blindly execute transactions. Dry run lets the agent (or user) preview exactly what would happen before committing. The simulation builds the full transaction, gets quotes and fees, but does not sign or broadcast.

Swap

owl dryrun swap -w main -c solana --from USDC --amount 10 --to SOL

Flag	Description
-w, --wallet	Wallet name	required
-c, --chain	Chain name	required
--from	Token to sell	required
--amount	Amount to sell	required
--to	Token to buy	required

Transfer

owl dryrun transfer -w main -c ethereum --token USDC --amount 50 --to 0xabc...

Flag	Description
-w, --wallet	Wallet name	required
-c, --chain	Chain name	required
--token	Token to send	required
--amount	Amount to send	required
--to	Destination address	required

Bridge

owl dryrun bridge -w main --from-chain ethereum --from-token USDC \
  --amount 100 --to-chain base --to-token USDC

Flag	Description
-w, --wallet	Source wallet	required
--from-chain	Source chain	required
--from-token	Source token	required
--amount	Amount to bridge	required
--to-chain	Destination chain	required
--to-token	Destination token	required

Agent Usage

In the terminal agent, just ask naturally. The agent will call owl_dryrun before executing any real transaction.

you: dry run swap 10 USDC to SOL on solana
owl: Simulating swap...
     -> owl_dryrun { operation: swap, wallet: main, chain: solana, ... }
     Quote: 10 USDC -> 0.058 SOL
     Fees: ~$0.002
     This is a simulation. Say "execute" to confirm.

MCP Tool

Tool	Description
owl_dryrun	Simulate swap, transfer, or bridge without broadcasting