What a balance preview cannot show

Some of the worst Solana transactions take nothing when you sign them: they hand over the right to take it later. A wallet's preview of balance changes shows nothing for those. SignLens reads the instructions themselves and names them, right under the verdict.

• Accounts given away

  A token account, or the wallet itself, handed to a new owner. Nothing moves when you sign, so a balance preview shows nothing; SignLens blocks it.

• Spending rights

  An approval lets another key spend from your token account later, up to an amount or without limit. SignLens names who, how much, and warns.

• Signatures that never expire

  A transaction built on a durable nonce stays valid until the nonce is used, so whoever holds it can send it next month. SignLens says "NO TIME LIMIT".

• Lookalike addresses

  An address that shares only its first and last four characters with yours or a contact's: the address-poisoning trick. SignLens flags it.

• Programs it does not know

  A program SignLens has no reviewed description of is shown as unknown, and the request blocked by default, never called safe.

• Multisig approvals you cannot see

  A multisig approval names a proposal, not what it does. SignLens reads the proposal's transaction from the bytes or from your RPC, and says when it cannot.

• A swap paying someone else

  A swap whose output goes to an account that is not yours. SignLens checks where the output lands and warns.

Try it: install SignLens for Chrome or Firefox.