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Sweep 12 Nov 2026 · 23:00Z Build v2.1.323 540 read Stable v2.1.311 Latest v2.1.323 Next v2.1.323 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.323 ·

Connector tool calls refuse file objects they cannot pass on

Claude Code now refuses a connector call that holds a file written as an id, type and size when it cannot pass that file on

You'll notice Improvements
JSON All of v2.1.323
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
MCPArea: what it touches
ImprovementsKind: in v2.1.323,
ImprovementsSection of the release

Unclear It is not clear whether the hosted Chrome upload card is switched on for every user.

What

Connectors, also called MCP servers, are add-ons that give Claude extra tools. A connector can expect a file written as an object with an id, a mimeType and a size. Claude Code now refuses a tool call that holds such an object when the call cannot be passed on with it, and explains why.

Uploading a file through hosted Chrome browser tools can also show an upload card.

Why

These are guardrails on how files get sent to connectors.

Read from
Feature flag
tengu_mcp_strip_trailing_xml_tags Not enough to say

Nothing 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 v2.1.323: 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.

tengu_send_file Not enough to say

Nothing 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 v2.1.323: 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 v2.1.323. It isn't a statement about your account. What a flag value here can and cannot tell you

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 clear whether the hosted Chrome upload card is switched on for every user.

See this entry in the whole of v2.1.323 →

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