You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SDKArea: what it touches
ImprovementsKind: in v2.1.323,
ImprovementsSection of the release
Unclear It is not stated where the refusal limit is set or what value it has.
What
A host program is software that embeds Claude Code and answers its permission questions. MCP (Model Context Protocol) servers are add-ons that give Claude extra tools. Error replies sent to hosts can now carry a refusal_limit field.
The field means a tool call was refused without being judged, because that MCP server's checked calls had reached a refusal limit. The error code mcp_call_refusal_limit is used for calls that were not staged.
Why
Hosts can now tell a call refused by this per-server limit apart from other refusals.
Read from
Names in the bundlerefusal_limit
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtIt is not stated where the refusal limit is set or what value it has.
