What
Claude Code keeps an internal list of tool names it checks saved permission (allow/deny) rules against. That list now includes five more retired tool names: TaskOutput, AgentOutputTool, BashOutputTool, AgentOutput, and BashOutput.
When a saved permission rule references a tool name that's in this list, Claude Code now recognizes it as a rule for a removed tool, logs a warning, and skips it. Previously such a rule would fall through to the generic "matches no known tool" check, which is meant to catch typos.
Why
This avoids confusing users with typo-style warnings when their saved permission rules simply reference tools that have since been renamed or removed, and makes the underlying detection more accurate by keeping the removed-tools list up to date.