Signature required

This API key must sign its requests.

Error
signature_required
Fix
Change the request fix.kind: change
What you do
Nothing, unless the agent asks you which value you meant.
What the agent does
Read the message, change the field or path it names, and send the call again.
Run it again
Yes, once the fix is done.

Agents: the same guide as plain Markdown is at /docs/errors/signature_required.md.