Tool use error stops new commands from being registered

[andrewreece]

Claude was working fine and then hung on a simple command. I hit Esc and typed a new command, and got this message:

API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.204: Did not find 1 tool_result block(s) at the beginning of
this message. Messages following tool_use blocks must begin with a matching number of tool_result blocks."}}

Now it responds with this error no matter what I type. Running /doctor reported no issues.

[bcherny]

Do you remember which command this was? (bash? something else?)

[bcherny]

Also what version are you running? claude --version or /bug to create a new issue with the version.

[andrewreece]

it was a piped shell command maybe grep or sed or something like that. claude chose it, but it disappeared each time this error showed up (the error replaced the command it was running) so i wasn't paying too close attention.

Claude 0.2.29