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Handbook›Claude Code Command Master›Cmd. /fork
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Cmd. /fork

Copy the conversation into a new background session.

Key takeaways

  • Copy the conversation into a new background session.
  • Check the input surface and availability before using the examples below.

Purpose

Copy the conversation into a new background session.

/fork [prompt]
/branch [name]
/subtask <task>

Availability

FieldValue
Input surfaceRunning CLI prompt
KindBuilt-in
StatusCurrent reference
Aliases—
Documented minimumNot specified
Reviewed against2026-09-22 · Claude Code 2.1.278

This guide describes Agent View behavior in v2.1.212+. With Agent View disabled, /subtask is unavailable and /fork retains the inherited-context subagent behavior.

Examples

/fork Investigate the flaky integration test in isolation

Effects and persistence

/branch switches into a conversation branch; /fork creates a separate background session; /subtask returns its result to this conversation.

Choose where the result goes

CommandResult
/branch experimentSwitches into a new conversation branch; preserves the original
/fork investigate the failing testStarts a separate background session while this conversation continues
/subtask inspect parser edge casesRuns an inherited-context subagent and returns its result here

Cautions

Branches and forks copy a point in the conversation; later messages are not synchronized automatically. Branch-local temporary approvals do not carry over.

Official sources

  • Commands
  • Sub Agents
  • Agent View
  • Changelog

Complete command list · Verification scope

Related docs

Cmd. /fork

Codex Command Master · Branch the current conversation into a new thread.

Cmd. /background

Detach the current session as a background agent (/bg).

Cmd. /tasks

Manage current-session background work (/bashes).

Cmd. /new

Codex Command Master · Start a new conversation inside the current CLI session.

Subagents

Claude Code Complete Guide · Delegate bounded work while keeping the main Claude Code session accountable.

Cmd. /export

Copy or save the current conversation as plain text.

Cmd. /import

Import Codex, Gemini CLI, and Cursor configuration into Claude Code

On this page

PurposeAvailabilityExamplesEffects and persistenceChoose where the result goesCautionsOfficial sources