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Claude Code v2.1.280 ·

Inline pastes now flow through more of the message pipeline

Pasted text that stays inline in a message (inline_pastes) is now read, threaded through, and exposed to the Task tool and bridge messages.

Group of 3 Under the hood Internal Changes
JSON All of v2.1.280
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Input HandlingArea: what it touches
Internal ChangesKind: in v2.1.280,
Internal ChangesSection of the release

Unclear What triggers inline_pastes versus pasted_content, and what user-visible behavior results from the chunking or truncation, are not stated in the finding.

What

  • The message-ingestion step that processes attachments now reads and passes through a new inline_pastes field on incoming user messages, alongside the existing pasted_content field (used when the host extracts pasted text out of the message instead of leaving it inline).
  • The Task tool's input schema now accepts inline_pastes, a list of pasted-text entries that stay in place inside the message content.
  • The internal message parser and the peer/bridge message poster now also read and forward inline_pastes, along with a from_plugin field, and messages get tagged with plugin when their origin is known.

Why

This lets pasted text that intentionally stays inline (as opposed to being pulled out into a separate attachment) survive consistently across the input pipeline, the Task tool, and remote/bridge sessions instead of being dropped or only partly supported.

Read from
Names in the bundleinline_pastes
What the documentation says
Documented inclaude-code/agent-sdk/typescript
Since it was published

The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.

Confirmed since Anthropic's documentation has since written up inline_pastes, on Agent SDK reference - TypeScript. Set `inline_pastes` to tell Claude Code which parts of `message.content` the user pasted rather than typed, one string per paste. The prompt text stays where the user put it. Claude Code may wrap each listed paste in `<pasted_content>` tag… agent-sdk/typescript see the edit
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 doubtWhat triggers inline_pastes versus pasted_content, and what user-visible behavior results from the chunking or truncation, are not stated in…
Anthropic's documentation agreesAnthropic's documentation has since written up inline_pastes, on Agent SDK reference - TypeScript.

See this entry in the whole of v2.1.280 →

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