Follow Discord
Sweep 19 Sep 2026 · 02:36Z Build v2.1.278 500 read Stable v2.1.267 Latest v2.1.278 Next v2.1.278 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.277 ·

Pasted content is now tracked separately from typed text, including in bridge-relayed messages

← All of v2.1.277 Home All releases

User messages, including ones relayed through the remote bridge, can now carry pasted text as a distinct pasted_content field

TierUnder the hoodhow much it should matter to you
Useful3my rating, 1 to 5
Signal3worth watching, 1 to 5
AreaSDKwhat it touches
KindInternal Changesin v2.1.277,
Group of 2 Under the hood

User messages, including ones relayed through the remote bridge, can now carry pasted text as a distinct pasted_content field

What

  • User-message schemas, including the SDK's user-message-replay type, gain a pasted_content field: content the user pasted rather than typed, appended after the typed text (optionally wrapped in <pasted_content> tags). Image or document blocks still must go in message.content, not here. The internal user-turn extraction path now plumbs pastedContent through as well.
  • Inbound messages relayed through the remote-control bridge (excluding peer and slack-ping messages) now go through the same pasted-content merge used by the SDK, appending any attached pasted text blocks to the message body and emitting the existing sdk_pasted_content telemetry.

Why

Keeping pasted text separate from typed text lets Claude Code and the SDK tell the two apart, and extending this to bridge-relayed messages means the same distinction now applies consistently no matter how a message arrives.

Read from
Names in the bundlepasted_content
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 pasted_content, on Agent SDK reference - TypeScript. pasted_content?: MessageParam["content"][]; agent-sdk/typescript see the edit
Added since A small documentation edit on Hooks reference touched a line naming pasted_content after this was published. In addition to the [common input fields](#common-input-fields), UserPromptSubmit hooks receive the `prompt` field containing the text the user submitted. Pasted content that collapsed to a `[Pasted text #N]` placeholder arrives expanded in… hooks see the edit
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agreesA small documentation edit on Hooks reference touched a line naming pasted_content after this was published.

See this entry in the whole of v2.1.277 →