What
When /reload-plugins would add or remove MCP servers (changing the tool list), Claude Code now warns that the next message will re-read the whole conversation instead of using the prompt cache, and prompts you to confirm with --force.
Details
- The warning shows how many MCP servers changed, or the specific server name if only one changed.
- Use
/reload-plugins --forceto apply immediately and skip the warning. - If ToolSearch is active and the model supports it, the warning is suppressed (tool-search mode handles dynamic tools without cache invalidation).
Evidence
Warning message (search for "This reload changes MCP tools" and "Run /reload-plugins --force to apply")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.