Check a receipt.
Every execution Ava performs writes a receipt binding the terms that were authorised to the transaction that settled. This is where a stranger reads one: what the receipt claims on the left, what an independent read of the chain found on the right, and the exact command that reproduces the answer on a public node.
A live one to try: exec_lend_aave_62d2a6763c984af8be707a58 (supply USDC on Aave v3, Monad).
What resolves here
Receipts are owner-only by default. An execution id resolves publicly only after its owner explicitly publishes that one execution, which is a per-receipt, revocable act. So an id that returns nothing may be wrong, or may be real and unpublished, and this surface cannot tell you which. What it can tell you is that nobody is entitled to cite it as checkable proof until it does resolve.
The same answer without a browser
curl -s https://www.getava.xyz/v1/receipts/exec_lend_aave_62d2a6763c984af8be707a58/verify