Claude isn't. It's a tool, that isn't capable of signing a contract any more that Adobe Acrobat or Photoshop is.
OP used it as a tool to sign the contract. The question would be whether they did so knowingly and intentionally, if not then whether that invalidates the contract.
Incorrect. Claude.is far more capable. E.g. it found and applied the sig without user knowledge.
I could write dozen lines of bash that finds for PDFs, pastes an image into them and emails it to someone. That doesn't mean that bash can sign contracts.
They can be used by someone to sign a contract, but they cannot sign a contract themselves because they're just tools.
> I could write dozen lines of bash that finds for PDFs, pastes an image into them and emails it to someone. That doesn't mean that bash can sign contracts
It does mean exactly that - though bash would need to get lucky with selection and positioning.
Claude isn't a legal entity. It is software.
OP is entirely responsible for the software they choose to use. Nobody else. If they misused that software, a court will not be sympathetic!
Capable is capable - regardless of responsibility.
No one is arguing that Claude can't stick an image onto a PDF. But that is not the same thing as signing a contract.