Source Intelligence

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

All of v2.1.69 Home All releases olderv2.1.68 v2.1.70newer
Claude Code v2.1.69

--prefill CLI Flag

What

Pre-fill the prompt input with text without automatically submitting it, allowing the user to review and edit before sending.

Usage
claude --prefill "implement a function that"
Details
  • Text appears in the input field ready for editing
  • Unlike --print, does not auto-submit — the user can modify the prompt before pressing Enter
  • Useful for templates, repetitive prompts, or workflow scripting
Evidence

Prefill flag (search for "--prefill", "Pre-fill the prompt input with text without submitting it")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.69 →