Unclear It is not clear which MCP servers this applies to.
MCP servers are programs that give Claude extra tools. For some of them, the way Claude Code lists their tools has changed:
- The tool permissions the server sends are transformed before use, rather than used as they arrive.
- These servers skip the overall size budget that limits how much tool output is kept.
- Each tool gets a standard key for permission grants, along with a note of whether an older grant was refused.
Hosted MCP servers also get a new way of running tool calls whose results are not meant to be shown to Claude.
This looks like groundwork for how permission grants work with MCP tools. Large results from these servers are no longer cut back by the shared size budget.
tengu_mcp_strip_trailing_xml_tags Not enough to sayNothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.
This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.310: off
These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.
Read once, for one account on one subscription tier, against v2.1.310. It isn't a statement about your account. What a flag value here can and cannot tell you
It is not clear which MCP servers this applies to.