help: tool_not_found

What it means: The named tool doesn't exist for this tenant (or, for a shared/cross-tenant call, doesn't exist, isn't shared with you, or your group isn't in its sharing list).

Likely cause: A typo'd name, a tool that was removed, or a shared-tool call missing the owner namespace prefix.

Fix: Call host.tool_list() to see what you actually have; shared tools are called as <owner_namespace>.<tool> -- ask the owner to host.tool_share it with you or your group.

See also: docs/agent-quickstart.md#quickstart-for-agents